WO2022209159A1 - 情報処理装置、情報処理方法およびプログラム - Google Patents
情報処理装置、情報処理方法およびプログラム Download PDFInfo
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Definitions
- the present invention relates to an information processing device, an information processing method, and a program.
- a technology has been proposed that uses a display and a half mirror to superimpose a display object (virtual object), which is digital information, on a real object.
- This type of display system is known as a smart mirror.
- a display object is presented by installing a diffusion layer behind the half mirror. Therefore, there is a problem that the real object and the display object are observed as virtual images having different depths. If the depths of the real object and the displayed object are different, the user's eyes cannot focus on both at the same time. Therefore, if the user tries to observe the display object while gazing at the real object, the display object will appear blurred.
- Patent Document 1 proposes placing a lens capable of adjusting the optical path between the display and the half mirror.
- the position of the lens is controlled based on the distance between the real object (the user facing the half mirror) and the half mirror. Therefore, the position in the depth direction that is in focus is limited to one position according to the distance of the real object. Even within the same real object, it is difficult to present display objects, such as eyes and nose, that are focused at different depth positions.
- the present disclosure proposes an information processing device, an information processing method, and a program that can easily adjust the position in the depth direction where a display object is presented.
- a point-of-regard calculation unit that calculates a point-of-regard on a virtual image reflected in a half mirror, a depth calculation unit that generates depth information regarding the depth of the point-of-regard, and a display object superimposed on the virtual image are generated. and a drive calculation unit for driving an optical system for superimposing the display object so that the display object can be viewed as an image having a depth corresponding to the depth information.
- FIG. 1 is a diagram showing an example of a display system
- FIG. It is a figure which shows the modification of a display system. It is a figure which shows the functional structure of a display system.
- FIG. 4 is a diagram showing the relationship between a virtual image and a gaze point;
- FIG. 10 is a diagram showing an example of adjustment of the superimposing optical system according to changes in the gaze point; It is a figure which shows the flow of information processing.
- It is a figure which shows the variation of a superimposition optical system.
- FIG. 1 is a diagram showing an example of a display system
- FIG. It is a figure which shows the modification of a display system. It is a figure which shows the functional structure of a display system.
- FIG. 4 is a diagram showing the relationship between a virtual image and a gaze point
- FIG. 10 is a diagram showing an example of adjustment of the superimposing optical system according to changes in the gaze point
- FIG. 4 is a diagram showing an example of an optical element implemented by a phase adjustment element;
- FIG. 10 is a diagram showing variations of detection timing of depth information;
- FIG. 10 is a diagram showing variations of detection timing of depth information;
- FIG. 10 is a diagram showing variations of detection timing of depth information;
- FIG. 5 is a diagram showing an example of a range of distance information generated by a distance recognition unit;
- FIG. 10 is a diagram illustrating processing when the line of sight temporarily deviates from the gaze target area;
- FIG. 10 is a diagram showing an example in which the display system is used for makeup work;
- FIG. 10 is a diagram showing an example in which the display system is used for makeup work;
- FIG. 10 is a diagram showing an example in which the display system is used for makeup work;
- FIG. 10 is a diagram showing an example in which the display system is used for makeup work;
- FIG. 10 is a diagram showing an example in which the display system is used for makeup work; 1 is a diagram showing an example in which the display system is used for digital signage; FIG. FIG. 2 is a diagram showing an example in which the display system is used in an in-vehicle rearview mirror;
- FIG. 1 is a diagram for explaining the background of the invention.
- Patent Document 1 By inserting a lens that can adjust the optical path between the display and the half mirror as in Patent Document 1, it is also possible to change the distance between the display and the half mirror while keeping the physical position constant. It is possible.
- the position of the lens is controlled based on the distance between the real object ROB and the half mirror. Therefore, the position in the depth direction that is in focus is limited to one position according to the distance of the real object ROB.
- the present disclosure proposes a method of detecting a gaze point GP on the virtual image VI that the user US gazes at, and presenting a display object DI at a position in the depth direction corresponding to the gaze point GP (see FIG. 5).
- the display object DI is less likely to blur even if the user observes the display object DI while gazing at the gaze point GP.
- FIG. 2 is a diagram showing an example of the display system 1.
- FIG. 3 is a diagram showing a modification of the display system 1.
- FIG. 4 is a diagram showing the functional configuration of the display system 1.
- FIG. 5 is a diagram showing the relationship between the virtual image VI and the gaze point GP.
- the display system 1 has a processing unit 10, an information presentation unit 20, a superimposing optical system 30, and a sensor unit 40.
- the processing unit 10 is an information processing device that processes various types of information.
- the processing unit 10 controls the information presenting unit 20 and the superimposing optical system 30 based on sensor information acquired from the sensor unit 40 .
- the sensor unit 40 has a plurality of sensors for sensing the external world.
- the multiple sensors include, for example, a visible light camera 41, a depth sensor 42, a ToF (Time of Flight) sensor 43, an ambient light sensor 44, a microphone 45, an ultrasonic sensor 46, a line of sight detection sensor 47, and line of sight detection glasses 48.
- the visible light camera 41 captures a visible light image of the space (outside world) that exists outside the half mirror 21 .
- the depth sensor 42, the ToF sensor 43 and the ultrasonic sensor 46 function as a distance measuring sensor DS.
- the distance sensor DS detects the distance of the real object ROB existing in the outside world.
- Ambient light sensor 44 detects the brightness of the outside world.
- a microphone 45 detects external sounds.
- the line-of-sight sensor 47 and the line-of-sight detection glasses 48 function as a line-of-sight sensor LS.
- the line-of-sight sensor LS uses a known eye-tracking technique to detect the line-of-sight ES of the user US directed toward the half mirror 21 .
- the line-of-sight detection sensor 47 is mounted on the display system 1 .
- the line-of-sight detection glasses 48 are mounted on eyeglasses worn by the user US.
- the line-of-sight detection sensor 47 and the line-of-sight detection glasses 48 are alternatively used according to the required accuracy of line-of-sight detection.
- the information presentation unit 20 presents video information and audio information to the user US.
- the information presentation unit 20 has, for example, a half mirror 21, a display 22, a speaker 23 and a unidirectional speaker 24.
- the half mirror 21 reflects light from the outside world and presents a virtual image VI of the real object ROB that exists in the outside world.
- the half mirror 21 displays the display object DI displayed on the display 22 by superimposing it on the virtual image VI of the real object ROB.
- a known display such as LCD (Liquid Crystal Display) or OLED (Organic Light-Rmitting Diode) is used.
- the speaker 23 and the unidirectional speaker 24 a known speaker capable of outputting voice or the like is used.
- the superimposing optical system 30 is arranged between the half mirror 21 and the display 22 .
- the superimposing optical system 30 projects the display object DI displayed on the display 22 onto the half mirror 21 .
- the superimposing optical system 30 has, for example, a lens section 31, a lens driving section 32, a full mirror 33 and a full mirror driving section .
- the lens unit 31 includes one or more lenses whose positions and focal lengths can be adjusted by the lens driving unit 32 .
- the full mirror 33 includes one or more mirrors whose angles (reflecting directions) can be adjusted by the full mirror driving section 34 .
- the lens drive section 32 and the full mirror drive section 34 function as an optical drive section 39 that adjusts the optical path and the optical path length L between the half mirror 21 and the display 22 .
- the display 22 is arranged facing the half mirror 21.
- the optical path of the display object DI is bent by the full mirror 33 .
- the display system 1B can realize a more compact configuration than the display system 1A.
- the processing unit 10 includes, for example, a data processing unit 11, an I/F unit 12, a line-of-sight recognition unit 13, a distance recognition unit 14, a user recognition unit 15, an environment recognition unit 16, an optical system recognition unit 17, a timer 18, and a storage unit 19. have The processing unit 10 acquires sensor information detected by the sensor unit 40 and optical driving information output from the optical driving unit 39 via the I/F unit 12 .
- the line-of-sight recognition unit 13 generates line-of-sight information of the user US who directs his line of sight to the half mirror 21 based on the information detected by the line-of-sight sensor LS.
- the line-of-sight information includes information about the position of the eye EY of the user US and the direction of the line of sight.
- a known eye-tracking technique is used for the line-of-sight recognition processing.
- a technique such as OpenGaze is used to simultaneously detect multiple lines of sight.
- the distance recognition unit 14 generates distance information of the real object ROB existing in the outside world based on the information detected by the distance measuring sensor DS.
- the distance information includes, for example, information on the distance in the depth direction between the real object ROB and the half mirror 21 .
- the depth direction is, for example, the normal direction of the half mirror 21 .
- the user recognition unit 15 extracts an image of the user US looking at the half mirror 21 from the visible light image of the outside world captured by the visible light camera 41 .
- the user recognition unit 15 generates action information of the user US based on the extracted image of the user US.
- the motion information includes, for example, information on the status of the work the user US is performing while looking at the half mirror 21 and information on gestures.
- the environment recognition unit 16 generates environment information regarding the brightness of the outside world based on the information detected by the ambient light sensor 44 .
- the optical system recognition section 17 generates optical information indicating the current optical situation of the superimposing optical system 30 based on the information output from the optical driving section 39 .
- the optical information includes, for example, information such as the current position and focal length of the lens unit 31 and information such as the current position and angle of the full mirror 33 .
- the data processing unit 11 synchronously drives the information presentation unit 20, the optical driving unit 39, and the sensor unit 40 based on the timing signal generated by the timer 18.
- the data processing unit 11 detects the gaze point GP on the virtual image VI of the real object ROB based on the line-of-sight information of the user US, and presents the display object DI at the position in the depth direction corresponding to the gaze point GP.
- the data processing unit 11 has, for example, a gaze point calculation unit 51, a depth calculation unit 52, a display generation unit 53, a brightness calculation unit 54, and a drive calculation unit 55.
- the gaze point calculation unit 51 calculates the gaze point GP on the virtual image VI reflected in the half mirror 21 based on the line-of-sight information acquired from the line-of-sight recognition unit 13 . For example, a point of the virtual image VI on an extension line connecting the position of the eye EY of the user US and the gaze position of the user US on the half mirror 21 is calculated as the gaze point GP of the user US.
- the depth calculation unit 52 generates depth information regarding the depth of the gaze point GP.
- the depth information includes information about the distance in the depth direction from the half mirror 21 to the point of gaze GP (depth distance of the point of gaze GP).
- the depth distance of the point of gaze GP is equal to the distance in the depth direction from the half mirror 21 to the corresponding point CP on the real image RI corresponding to the point of gaze GP (the depth distance DP of the corresponding point CP).
- the depth calculator 52 extracts the depth distance DP of the corresponding point CP from the distance information acquired from the distance recognizer 14 .
- the depth calculator 52 generates depth information of the point of gaze GP based on the depth distance DP of the corresponding point CP.
- the display generation unit 53 generates a display object DI superimposed on the virtual image VI.
- the display object DI includes image information and character information related to the gaze point GP.
- image information and character information indicating the range of makeup, how to apply makeup tools, the position of application, the density of makeup, etc. are generated as the display object DI.
- the generated display object DI is superimposed by the superimposition optical system 30 on the positions of the virtual images VI of the eyes EY and nose to be applied makeup (positions corresponding to the gaze point GP).
- the brightness calculation unit 54 calculates the brightness of the display object DI based on the environment information acquired from the environment recognition unit 16. For example, in order to enhance the visibility of the display object DI, high brightness is set in a bright environment, and low brightness is set in a dark environment.
- the information presentation unit 20 adjusts the brightness of the display object DI based on the brightness set by the brightness calculation unit 54 .
- the driving calculation unit 55 drives the superimposing optical system 30 for the display object DI so that the display object DI can be observed as an image having a depth corresponding to the depth information.
- the driving calculation unit 55 calculates the target optical condition of the superimposing optical system 30 based on the depth information acquired from the depth calculation unit 52 .
- the optical conditions include the optical arrangement of the lens unit 31 and the full mirror 33 (the position of the lens unit 31, the rotational posture of the full mirror 33, etc.) and the optical characteristics (the focal length of the varifocal lens included in the lens unit 31 and the phase modulation element distribution of phase modulation amount, etc.).
- the driving calculation unit 55 detects the current optical situation of the superimposing optical system 30 based on the optical information acquired from the optical system recognition unit 17 .
- the drive calculator 55 calculates the drive amount of the superimposing optical system 30 for obtaining the desired optical situation.
- the drive amount of the superimposing optical system 30 includes the drive amount of the lens unit 31 by the lens drive unit 32 and the drive amount of the full mirror 33 by the full mirror drive unit 34 .
- the driving calculation unit 55 controls the optical arrangement and optical characteristics of the lens unit 31 and the full mirror 33 included in the superimposing optical system 30, thereby adjusting the position at which the display object DI is observed.
- the driving calculation unit 55 performs superimposition optical calculation based on the relative positions (line-of-sight information) between the eyes EY of the user US and the gaze point GP so that the display object DI can be observed even if the user US looks into the half mirror 21 from an oblique direction. A drive amount of the system 30 is calculated.
- the optical drive unit 39 drives the superimposing optical system 30 based on the calculated drive amount.
- the optical path length OP between the half mirror 21 and the display 22 matches the depth distance of the gaze point GP (the depth distance DP of the corresponding point CP).
- the depth calculation unit 52 determines the gaze condition based on the user information acquired from the user recognition unit 15 and the setting information STI stored in the storage unit 19 .
- the depth calculation unit 52 determines the generation timing and the generation range of the depth information based on the gaze condition.
- the situations in which gaze is performed are classified into several situations based on the request (response performance) for the response time from the detection of the gaze point GP to the presentation of the display object DI.
- response performance response performance
- depth information must be constantly monitored.
- depth information is generated after the point of gaze GP is detected or after it is determined that work will continue to occur near the point of gaze GP.
- the depth calculation unit 52 constantly generates a depth map showing the distribution of the depth of the virtual image VI.
- the driving calculation unit 55 controls driving of the superimposing optical system 30 based on the depth information of the gaze point GP extracted from the depth map. Note that generating the depth map all the time means generating the depth map at regular time intervals based on the timing signal regardless of whether or not the point of gaze GP is detected.
- Conditions in which depth information should be constantly monitored include, for example, situations in which detailed work is performed on unevenness and situations in which work is performed to ensure safety.
- An example of the former is a situation in which makeup work is performed.
- An example of the latter is a situation where the display system 1 is used as an in-vehicle rearview mirror.
- a situation in which makeup work is performed is detected, for example, based on user information.
- a situation in which the display system 1 is used as an in-vehicle rearview mirror is detected based on the setting information STI, for example.
- the depth calculation unit 52 designates the virtual image VI in a specific range according to the situation of gaze as the gaze target area VI PA (see FIG. 15) among the virtual images VI reflected on the half mirror 21. set.
- the depth calculator 52 selectively generates a depth map for the gaze target area VI PA .
- the target of gaze is mainly the upper part of the face (eyes, eyebrows, etc.). Therefore, the area above the face of the user US reflected in the half mirror 21 is set as the gaze target area VI PA , and a depth map is selectively generated for the gaze target area VI PA .
- the setting information STI and the program PG used for the above process are stored in the storage unit 19 .
- the program PG is a program that causes a computer to execute information processing according to this embodiment.
- the processing unit 10 performs various processes according to the program PG stored in the storage unit 19 .
- the storage unit 19 may be used as a working area that temporarily stores the processing results of the processing unit 10 .
- Storage unit 19 includes, for example, any non-transitory storage medium such as a semiconductor storage medium and a magnetic storage medium.
- the storage unit 19 includes, for example, an optical disc, a magneto-optical disc, or a flash memory.
- the program PG is stored, for example, in a non-transitory computer-readable storage medium.
- the processing unit 10 is, for example, a computer configured with a processor and memory.
- the memory of the processing unit 10 includes RAM (Random Access Memory) and ROM (Read Only Memory).
- the processing unit 10 includes a data processing unit 11, an I/F unit 12, a line-of-sight recognition unit 13, a distance recognition unit 14, a user recognition unit 15, an environment recognition unit 16, an optical system recognition unit 17, It functions as a timer 18 , a gaze point calculator 51 , a depth calculator 52 , a display generator 53 , a brightness calculator 54 and a drive calculator 55 .
- FIG. 6 is a diagram showing an example of adjustment of the superimposing optical system 30 according to changes in the gaze point GP.
- FIG. 7 is a diagram showing the flow of information processing. The processing of FIG. 7 will be described with reference to FIG.
- step S1 the data processing unit 11 determines whether or not the user US has started work based on sensor information. For example, if the eyes EY of the user US are continuously detected based on the line-of-sight information for a preset time or longer, it is determined that the work has started.
- step S1 If it is determined in step S1 that the work has not started (step S1: No), step S1 is repeated until the work starts. If it is determined in step S1 that the work has started (step S1: Yes), the process proceeds to step S2. In step S2, the point-of-regard calculator 51 determines whether or not the point-of-regard GP of the user US has been detected.
- the gaze point calculation unit 51 calculates a point of the virtual image VI on an extension line connecting the position of the eye EY of the user US and the gaze position of the user US on the half mirror 21 as the gaze point GP of the user US ( See Figure 5).
- the point-of-regard calculation unit 51 determines that the point-of-regard GP is detected when the point-of-regard GP can be calculated.
- the nose of the user US reflected in the half mirror 21 is detected as the gaze point GP.
- the point-of-regard calculation unit 51 determines that the point-of-regard GP is not detected when the gaze position of the user US on the half mirror 21 cannot be specified because the line of sight of the user US is blocked by a tool or the like used by the user US.
- step S2 determines whether or not the gaze point GP has been detected. If it is determined in step S2 that the gaze point GP is not detected (step S2: No), the process proceeds to step S7. In step S7, the data processing unit 11 determines that an error has occurred, and terminates the process. If it is determined in step S2 that the gaze point GP has been detected (step S2: Yes), the process proceeds to step S3. In step S3, the depth calculation unit 52 determines whether or not the depth distance of the gaze point GP has been acquired.
- the depth calculation unit 52 acquires the depth distance DP of the corresponding point CP as the depth distance of the gaze point GP.
- the depth calculator 52 determines that the depth distance of the point of gaze GP has been acquired, and generates depth information of the point of gaze GP. If the corresponding point CP is blocked by a tool or the like used by the user US and the depth distance DP of the corresponding point CP cannot be obtained, the depth calculation unit 52 determines that the depth distance of the gaze point GP cannot be obtained.
- step S3 determines whether or not there is a change in the depth distance of the gaze point GP.
- the depth calculation unit 52 stores the depth information of the gaze point GP generated last time (the nose of the user US in the example in the upper part of FIG. 6).
- the depth calculator 52 extracts the depth distance of the previous point of gaze GP from the depth information of the previous point of gaze GP.
- the depth calculator 52 compares the depth distance of the latest newly detected point of gaze GP with the depth distance of the previous point of gaze GP.
- the forehead of the user US reflected in the half mirror 21 is detected as the latest gaze point GP.
- the depth calculator 52 outputs the difference between the forehead depth distance DP fh and the nose depth distance DP ns as a comparison result.
- the depth calculation unit 52 determines that the depth distance of the gaze point GP has changed. If the difference is equal to or less than the threshold, the depth calculator 52 determines that the depth distance of the gaze point GP has not changed.
- step S4 If it is determined in step S4 that there is no change in the depth distance of the gaze point GP (step S4: Yes), the data processing unit 11 terminates the process. If it is determined in step S4 that the depth distance of the gaze point GP has changed (step S4: Yes), the process proceeds to step S5. In step S5, the driving calculation unit 55 calculates the target optical conditions of the superimposing optical system 30, such as the lens position.
- step S6 the driving calculation unit 55 calculates the driving amount of the superimposing optical system 30 for obtaining the desired optical situation.
- the driving calculation unit 55 controls the optical driving unit 39 based on the calculated driving amount to move the lens position and the like. As a result, the display object DI is presented at a position in the depth direction corresponding to the gaze point GP.
- the optical path length L of the superimposing optical system 30 is adjusted by changing the position of the lens unit 31 .
- the presentation position of the display object DI in the depth direction is changed.
- a lens unit 31A indicates the lens unit 31 whose arrangement is adjusted according to the position of the first real object ROB A.
- a lens unit 31B represents the lens unit 31 whose arrangement is adjusted according to the position of the second real object ROB B.
- FIG. The lens unit 31A is arranged near the half mirror 21 by a distance Lab' corresponding to the distance Lab between the first real object ROB A and the second real object ROB B.
- the optical path length L of the superimposing optical system 30 is adjusted using the varifocal lens AF included in the lens section 31 .
- the driving calculation unit 55 adjusts the position in the depth direction where the display object DI is observed by controlling the focal length of the varifocal lens AF.
- the optical path length L of the superimposing optical system 30 is adjusted using the phase modulating element PM included in the lens section 31 .
- the phase modulation element PM is a liquid crystal element having a plurality of pixels whose phase modulation amount can be adjusted independently.
- the drive calculation unit 55 controls the phase modulation amount of the phase modulation element PM for each region by driving each pixel independently. Thereby, the driving calculation unit 55 adjusts the position in the depth direction where the display object DI is observed.
- FIG. 11 is a diagram showing an example of an optical element realized by the phase adjusting element PM.
- the phase adjustment element PM functions as an optical element such as a convex lens, a concave lens, and a diffraction element by controlling the orientation of the liquid crystal LC for each pixel PX.
- the thickness d of the liquid crystal layer of each pixel PX is set constant.
- the refractive index of the liquid crystal layer changes depending on the alignment state of the liquid crystal LC.
- a convex lens is generated by controlling the refractive indices (n1, n2, n3, n4) of the plurality of pixels PX included in the area CA so that they gradually increase from the outside toward the center of the area CA (see FIG. 11). left).
- a concave lens is produced (center view in FIG. 11).
- a diffraction grating is generated by arranging a large number of areas CA whose refractive index increases uniformly so that a difference in refractive index occurs at the boundaries between the areas CA (right diagram in FIG. 11).
- phase modulation element PM By arranging the phase modulation element PM between the display 22 and the half mirror 21, any luminous intensity distribution can be electrically created. Therefore, movement control for moving the position of the lens portion 31 is not required, and the optical driving portion 39 is simplified. Since the phase adjustment element PM can independently control the amount of phase adjustment for each area CA, even if a plurality of users US are looking at different positions, the display object DI can be adjusted according to the gaze point GP of each user US. The presentation position in the depth direction can be adjusted.
- the processing unit 10 has means for canceling out the change in the display magnification of the display object DI due to the driving of the superimposing optical system 30 .
- the display generator 53 adjusts the size of the display object DI so as to offset the change in the display magnification of the display object DI due to the driving of the superimposing optical system 30 .
- a change in magnification may be adjusted by a magnification adjusting lens (for example, a beam expander) provided in the superimposing optical system 30 .
- the drive calculation unit 55 adjusts the size of the display object DI using the beam expander included in the superimposition optical system 30 so as to offset the change in the display magnification of the display object DI due to the driving of the superimposition optical system 30 .
- the data processing unit 11 has, as operation modes, a normal mode that is implemented in situations where line-of-sight detection is possible, and an error handling mode that is implemented in situations where line-of-sight detection is impossible.
- the point-of-regard calculation unit 51 calculates the point-of-regard GP based on the line-of-sight ES in the normal mode in which the line-of-sight ES can be detected.
- the point-of-regard calculation unit 51 calculates the point-of-regard GP based on indirect information suggesting the line-of-sight ES in the error handling mode in which the line-of-sight ES cannot be detected.
- the indirect information includes information manually input by the user US, information such as the orientation of the face of the user US, and information on tools used for work on the gaze point GP.
- the point-of-regard calculation unit 51 can notify the user US by display, sound, vibration, or the like.
- Calibration may be performed according to the presentation status of the display object DI.
- the half mirror 21 is captured by a camera installed near the user US.
- the depth calculator 52 determines whether or not the display object DI is presented at a desired position based on the captured image.
- the depth calculation unit 52 generates calibration information based on the presentation position bias of the display object DI.
- the calibration information includes, for example, information about the deviation between the intended presentation position of the display object DI and the actual presentation position.
- the drive calculator 55 corrects parameters for calculating the drive amount of the superimposing optical system 30 based on the calibration information.
- the calibration may be performed based on information manually entered by the user US. For example, the user US performs a gesture such as rubbing a finger on a portion where the presentation position of the display object DI is displaced.
- the driving calculation unit 55 corrects the parameters for calculating the driving amount of the superimposing optical system 30 based on the gesture of the user US.
- the depth calculation unit 52 determines the generation timing and generation range of depth information based on the gaze situation.
- the examples of FIGS. 12 and 13 correspond to situations in which high response performance is not required for displaying the display object DI. In this situation, depth information is generated after the point of gaze GP is calculated.
- step S11 After the point of gaze GP is calculated in step S11, the depth distance of the point of gaze GP is detected in step S12. Based on this depth distance, depth information of the gaze point GP is generated. Then, in step S13, a target lens state is calculated, and in step S14, the lens state is changed.
- step S22 it is determined in step S22 whether or not the work continues in the gaze area near the point of gaze GP for a certain period of time or more.
- the depth calculator 52 estimates the work content of the user based on the user information. If the user's work is not completed in a short period of time, the depth calculation unit 52 determines that the work in the attention area continues for a certain period of time or longer. Estimation of work content and prediction of work continuation status can be performed using a machine-learned neural network.
- step S22 If it is determined in step S22 that the work in the focused area will not continue for a certain period of time or longer (step S22: No), the process returns to step S22. If it is determined in step S22 that work in the gaze area continues for a certain period of time or more (step S22: Yes), depth information of the gaze point GP is generated in step S23. Then, in step S24, a target lens state is calculated, and in step S25, the lens state is changed.
- the depth distance is detected only at one point of gaze GP. Therefore, the processing for generating depth information is reduced.
- the display generation unit 53 alternatively or in combination performs various processes that make it difficult for the user US to perceive the delay.
- the display generation unit 53 temporarily erases the display of the display object DI or makes the display lighter during the delay period generated from the movement of the gaze point GP to the adjustment of the superimposing optical system 30. .
- the display generator 53 notifies that the presentation position of the display object DI is being adjusted during the delay period. For example, the notification is made by displaying an effect. Alternatively, the notification is made by sound.
- the display generation unit 53 gradually changes the observed position of the display object DI within the delay period. For example, the presentation position of the display object DI is changed along the position on the virtual image VI that can be focused immediately. As a result, the gaze position is guided step by step.
- the example of FIG. 14 corresponds to a situation where high response performance is required for displaying the display object DI.
- the area of the virtual image VI to be gazed at is specified as the gazed area VI PA .
- the depth distribution of the entire gaze target area VI PA is always detected.
- the depth calculator 52 generates the depth distribution as a depth map.
- the depth calculation unit 52 detects the depth distribution for each preset time, and updates the depth map as needed based on the detection result.
- step S31 the depth distribution of the specific range set as the gaze target area VI PA is calculated.
- step S32 a depth map is generated that indicates the depth distribution.
- step S33 the gaze point GP of the user US is calculated.
- step S34 the depth distance of the gaze point GP is extracted from the depth map, and the target lens state is calculated based on the extracted depth distance of the gaze point GP. Then, in step S35, the lens state is changed.
- FIG. 15 is a diagram showing an example of the range of distance information generated by the distance recognition unit 14. As shown in FIG.
- the depth calculation unit 52 generates a depth map of the gaze target area VI PA based on the distance information of the real object ROB acquired from the distance recognition unit 14 .
- the distance measurement sensor DS can sense the entire range of the external world, but the distance information necessary for generating the depth map is only the distance information of the real image RI corresponding to the gaze target area VI PA . Therefore, the distance recognition unit 14 can limit the generation range of distance information in order to reduce processing.
- the distance recognition unit 14 selectively generates only the distance information of the real image RI corresponding to the visual field range VA of the user US through the half mirror 21 .
- the distance recognition unit 14 selectively generates the distance information of the real image RI corresponding to the virtual image VI V visible to the user US, and does not generate the distance information of the virtual image VI IV invisible to the user US.
- the distance recognition unit 14 can further reduce the processing by limiting the range of generating the distance information to the range of the real image RI corresponding to the gaze target area VI PA .
- FIG. 16 is a diagram illustrating processing when the line of sight ES temporarily deviates from the gaze target area VI PA .
- the face of the user US is set as the gaze target area VI PA .
- the gaze point GP of the user US mainly concentrates on the face. Therefore, the face is set as the gaze target area VI PA .
- the attention of the user US may be temporarily diverted from the face during the makeup work.
- the line of sight ES is directed to a wall or a person behind the user US. Continuing to generate a depth map of the gaze target area VI PA in such a situation is not necessarily required.
- the depth calculation unit 52 stops generating the depth map when, for example, the point of gaze GP temporarily deviates from the gaze target area VI PA .
- the depth calculation unit 52 employs depth information before the gaze point GP deviates from the gaze target area VIPA or default depth information as the depth information. Default depth information is included in the setting information STI.
- the display generation unit 53 stops outputting the display object DI while the gaze point GP is deviated from the gaze target area VI PA .
- the depth calculation unit 52 cancels the setting of the gaze target area VI PA when the gaze is continuously performed on a position other than the gaze target area VI PA .
- the depth calculation unit 52 returns the depth information generation timing and generation range to the default settings. By default, depth information generation is performed after the gaze point GP is detected, and depth map generation is not performed.
- a makeup guide and an image indicating the makeup target area are superimposed on the face as a display object DI.
- the posture information of the make-up tool TL is obtained, for example, from information of a sensor built into the tool TL or a visible light image of the tool TL captured by the visible light camera 41 .
- Information such as the orientation of the body of the user US is obtained based on the user information obtained from the user recognition unit 15 .
- each area is separated by a frame such as a solid line or a dotted line.
- Character information such as "b" and "c" is added to each area.
- dots indicate the makeup range and the makeup intensity.
- Arrows indicate how to apply the tool TL.
- the display object DI is superimposed along the uneven shape of the face.
- the display object DI is observed as if it were drawn directly on the surface of the face.
- the display generation unit 53 notifies the make-up procedure by voice information in combination with such a display object DI.
- (A) Work Start Timing Considering that the superimposition target of the display object DI changes, one process is considered one work.
- the data processing unit 11 determines that work has started when the body of the user US faces the half mirror 21 for a certain period of time or more.
- the data processing unit 11 can also grasp the more accurate start timing by combining with the attitude information of the tool TL.
- posture information of the tool TL For example, when the amount of change in inclination of the tool TL is small, it can be determined that the same work has been continued for a certain period of time. In this way, it is possible to read from the posture information of the tool TL the intention of the user US to continue work, such as whether the user has only looked at the object for a moment or is gazing at it.
- the eye EY of the user US may be covered with the tool TL, and the line of sight ES may not be detected.
- the direction of the tool TL and the movement of the hand can be seen from the visible light image acquired by the visible light camera 41, and an object that the user US is expected to gaze next can be estimated.
- control without delay becomes possible.
- (E) Work End Timing The data processing unit 11 determines that the work is completed when, for example, the user US releases the tool TL and completes one process.
- the display object DI can be presented at an appropriate position while guiding the gaze. For example, when the user US gazes at the boundary between two virtual image areas with slightly different depths, it is difficult to correctly superimpose the two virtual image areas. In that case, while both distances are held as depth distances, the display object DI is aligned with one of the depths first, and the line of sight ES of the user US is followed.
- the presentation position of the display object DI can be directly aligned with the virtual image area on the far side.
- the gaze is changed to the virtual image area on the near side, it is considered that the user US wants to see the virtual image area on the near side.
- by moving the presentation position of the display object DI to the virtual image area on the front side it is possible to present the display object DI that matches the gaze intention of the user US.
- the display generation unit 53 first generates a display object DI superimposed on one of the virtual image regions. do.
- the driving calculation unit 55 drives the superimposing optical system 30 based on the depth information of the one virtual image area.
- the user US observes the display object DI presented as an image having a depth corresponding to the depth information of the one virtual image area.
- the gaze point calculation unit 51 calculates the gaze point GP of the user US observing the display object DI whose presentation position has been adjusted as described above.
- the driving calculation unit 55 drives the superimposing optical system 30 based on the depth information of the other virtual image area.
- the display generation unit 53 gradually changes the observed position of the display object DI within the period in which the superimposing optical system 30 is adjusted based on the depth information of the other virtual image area.
- phase modulation element PM As another solution, it is conceivable to seamlessly change the phase of light by using the phase modulation element PM. In this case, it is possible to superimpose the display object DI on two virtual image areas at the same time. can judge.
- FIG. 20 is a diagram showing an example in which the display system 1 is used for digital signage.
- (A) Work Start Timing If it is desired to present the display object DI to an unspecified number of users US, the user US gazing at the half mirror 21 is specified based on the visible light image acquired from the visible light camera 41 . For example, the data processing unit 11 determines that work has started when the line of sight ES of the user US is directed toward the half mirror 21 for a certain period of time or more. However, if it is desired to present the display object DI only to an interested user US, the direction of the body of the user US is acquired from the visible light image, and the display is started only when the body is directed toward the half mirror 21. can be considered.
- (B) Line-of-sight detection The lines of sight of a plurality of users US are detected using visible light images acquired from the visible light camera 41 .
- line-of-sight detection for example, a technique such as OpenGaze capable of detecting the lines of sight of a plurality of people is used.
- (C) Depth Detection Timing In the example of FIG. 20, clothes are tried on by image synthesis.
- the user US selects clothes to try on, and gazes at the part of the body that the user wants to try on. Depth information is obtained after calculating the gaze point GP.
- the display generator 53 outputs the image of the selected clothes as the display object DI.
- the driving calculation unit 55 presents the display object DI at a position in the depth direction corresponding to the gaze point GP.
- Advertisement effectiveness can be enhanced by monitoring the point of gaze GP and preemptively performing a display that guides the line of sight ES of the user US.
- the depth calculation unit 52 can generate, as preliminary information, depth information of one or more expected gaze points at which gaze is expected.
- the driving calculation unit 55 extracts the depth information of the predicted point of gaze that matches the point of gaze GP from the preliminary information.
- the driving calculation unit 55 controls driving of the superimposing optical system 30 based on the extracted depth information.
- the display can be continued.
- the position of the display object DI in the depth direction can be maintained in accordance with the position immediately before it turned sideways.
- the data processing unit 11 determines that the work ends when, for example, the user US leaves. However, in the case of an advertising system in a public place, if the display is stopped immediately after the user US leaves, the advertisement will look unnatural to a third party. Therefore, the display continues until a set of video and audio (one loop) flowing as an advertisement ends. This allows the advertisement to end without spoiling the appearance. If there is another user US, it is conceivable to match the display of the display object DI to the position in the depth direction that matches the user US, or to present an image that fades naturally.
- FIG. 21 is a diagram showing an example in which the display system 1 is used as an in-vehicle rearview mirror.
- the display system 1 of the present disclosure may be applicable. Basically, it is assumed that one driver will be the user of the display system 1 .
- the line-of-sight ES is always detected from the time the user US starts driving.
- the superimposition of the display object DI is started when the sensor unit 40 attached to the rearview mirror acquires the line of sight ES of the user US.
- danger it is possible to provide a display that guides the user's line of sight even if the line of sight ES of the user US is out of sight.
- an approaching car is indicated by an arrow to notify the user US of danger.
- the data processing unit 11 can stop presenting the display object DI when, for example, the line of sight ES is removed from the rearview mirror for a certain period of time or longer. Also, when the user US finishes driving, the line-of-sight detection can be finished.
- the processing unit 10 has a gaze point calculation unit 51 , a depth calculation unit 52 , a display generation unit 53 and a drive calculation unit 55 .
- the point-of-regard calculator 51 calculates a point-of-regard GP on the virtual image VI reflected on the half mirror 21 .
- the depth calculator 52 generates depth information about the depth of the gaze point GP.
- the display generation unit 53 generates a display object DI superimposed on the virtual image VI.
- the driving calculation unit 55 drives the superimposing optical system 30 for the display object DI so that the display object DI can be observed as an image having a depth corresponding to the depth information.
- the processing of the processing unit 10 described above is executed by a computer.
- the program of the present embodiment causes a computer to implement the processing of the processing unit 10 described above.
- the position in the depth direction where the display object DI is presented can be easily adjusted based on the gaze point GP.
- the drive calculation unit 55 calculates the drive amount of the superimposition optical system 30 based on the relative position between the eye EY of the user US and the gaze point GP.
- the display object DI is appropriately superimposed based on the line-of-sight direction of the user US. Therefore, even if the angle at which the user looks into the half mirror 21 changes, the line of sight ES is directed outside the angle of view of the display 22 and the display object DI is not superimposed on the focused area.
- the driving calculation unit 55 controls the optical arrangement and optical characteristics of the lens unit 31 and the full mirror 33 included in the superimposing optical system 30, thereby adjusting the position in the depth direction where the display object DI is observed.
- the driving calculation unit 55 controls the focal length of the varifocal lens AF included in the superimposing optical system 30 to adjust the position in the depth direction where the display object DI is observed.
- the presentation position of the display object DI is adjusted with high accuracy.
- the drive calculation unit 55 adjusts the position in the depth direction where the display object DI is observed by controlling the phase modulation amount of the phase modulation element PM included in the superimposition optical system 30 for each region.
- any luminous intensity distribution can be electrically created. Therefore, it is possible to simultaneously present in-focus display objects DI at a plurality of positions with different depths.
- the processing unit 10 has means for canceling out changes in the display magnification of the display object DI due to driving of the superimposing optical system 30 .
- the display generator 53 adjusts the size of the display object DI so as to offset the change in the display magnification of the display object DI due to the driving of the superimposing optical system 30 .
- the drive calculation unit 55 adjusts the size of the display object DI using the beam expander so as to offset the change in the display magnification of the display object DI due to the driving of the superimposing optical system 30 .
- the size of the display object DI observed by the user US is less likely to change due to the movement of the gaze point GP.
- the depth calculation unit 52 generates depth information based on the distance in the depth direction from the half mirror 21 to the corresponding point CP on the real image RI corresponding to the gaze point GP.
- Depth information can be easily calculated using a known distance measurement method such as ToF that performs distance measurement of a real image RI.
- the depth calculation unit 52 determines the generation timing and generation range of depth information based on the gaze situation.
- depth information can be generated at an appropriate timing and range according to the situation.
- the depth calculation unit 52 generates a depth map showing the depth distribution of the virtual image VI.
- the driving calculation unit 55 controls driving of the superimposing optical system 30 based on the depth information of the gaze point GP extracted from the depth map.
- the depth calculation unit 52 sets a virtual image VI in a specific range according to the state of gaze as the gaze target area VI PA among the virtual images VI reflected on the half mirror 21 .
- the depth calculator 52 selectively generates a depth map for the gaze target area VI PA .
- the depth map generation range is limited. Therefore, the processing required to generate the depth map is reduced.
- the depth calculator 52 stops generating the depth map when the gaze point GP deviates from the gaze target area VIPA .
- the depth calculation unit 52 employs depth information before the gaze point GP deviates from the gaze target area VIPA or default depth information as the depth information.
- the display generation unit 53 stops outputting the display object DI while the gaze point GP is deviated from the gaze target area VI PA .
- the display generation unit 53 temporarily erases or dims the display of the display object DI during the delay period generated from the movement of the gaze point GP to the adjustment of the superimposing optical system 30 .
- the display generation unit 53 notifies that the presentation position of the display object DI is being adjusted during the delay period generated from the movement of the gaze point GP to the adjustment of the superimposing optical system 30 .
- the display generation unit 53 gradually changes the observed position of the display object DI within the delay period generated from the movement of the gaze point GP to the adjustment of the superimposing optical system 30 .
- the depth calculation unit 52 generates, as preliminary information, depth information of one or more expected gaze points at which gaze is expected.
- the driving calculation unit 55 extracts the depth information of the predicted point of gaze that matches the point of gaze GP from the preliminary information.
- the driving calculation unit 55 controls driving of the superimposing optical system 30 based on the extracted depth information.
- the depth information is quickly acquired using the preliminary information. Therefore, the delay from the movement of the gaze point GP to the focus of the display object DI is reduced.
- the depth calculation unit 52 generates calibration information based on the bias of the presentation position of the display object DI.
- the presentation position of the display object DI is appropriately adjusted by calibration.
- the gaze point calculation unit 51 calculates the gaze point GP based on the sight line ES.
- the gaze point calculation unit 51 calculates the gaze point GP based on indirect information suggesting the sight line ES.
- the presentation position of the display object DI can be adjusted.
- the point-of-regard calculation unit 51 notifies the user US when the line-of-sight ES cannot be detected.
- the display generation unit 53 When the gaze point GP is detected at the boundary between two virtual image areas with different depth directions, the display generation unit 53 first generates a display object DI superimposed on one of the virtual image areas.
- the driving calculation unit 55 drives the superimposing optical system 30 based on the depth information of one virtual image area.
- the gaze point calculation unit 51 calculates the gaze point GP of the user US observing the display object DI presented as an image having a depth corresponding to the depth information of one virtual image area.
- the driving calculation unit 55 drives the superimposing optical system 30 based on the depth information of the other virtual image area.
- the display generation unit 53 gradually changes the observed position of the display object DI within a period in which the adjustment of the superimposing optical system 30 is performed based on the depth information of the other virtual image area.
- the gaze point GP is accurately detected based on the line-of-sight guidance.
- the present technology can also take the following configuration.
- a point-of-regard calculation unit that calculates a point-of-regard on the virtual image reflected in the half mirror; a depth calculation unit that generates depth information about the depth of the gaze point; a display generation unit that generates a display object to be superimposed on the virtual image; a drive calculation unit that drives a superimposition optical system for the display object so that the display object is observed as an image having a depth corresponding to the depth information;
- Information processing device having (2) The drive calculation unit calculates the drive amount of the superimposition optical system based on the relative position between the user's eyes and the gaze point.
- the drive calculation unit adjusts the position in the depth direction where the display object is observed by controlling the optical arrangement and optical characteristics of the lens unit and the full mirror included in the superimposition optical system.
- the drive calculation unit adjusts the position in the depth direction where the display object is observed by controlling the focal length of a variable focus lens included in the superimposition optical system.
- the drive calculation unit adjusts the position in the depth direction where the display object is observed by controlling the phase modulation amount of the phase modulation element included in the superimposition optical system for each region.
- the information processing apparatus comprising means for canceling out changes in the display magnification of the display object accompanying driving of the superimposing optical system;
- the information processing apparatus according to any one of (1) to (5) above.
- the display generation unit adjusts the size of the display object so as to offset a change in display magnification of the display object due to driving of the superimposing optical system.
- the drive calculation unit adjusts the size of the display object by a beam expander so as to offset a change in display magnification of the display object due to driving of the superimposing optical system.
- the depth calculation unit generates the depth information based on a distance in the depth direction from the half mirror to a corresponding point on the real image corresponding to the gaze point.
- the information processing apparatus according to any one of (1) to (8) above.
- the depth calculation unit determines the generation timing and generation range of the depth information based on the gaze situation.
- the information processing apparatus according to any one of (1) to (9) above.
- (11) The depth calculation unit generates a depth map showing the distribution of the depth of the virtual image,
- the driving calculation unit controls driving of the superimposing optical system based on the depth information of the gaze point extracted from the depth map.
- the information processing apparatus according to (10) above.
- the depth calculation unit sets the virtual image in a specific range according to the situation among the virtual images reflected on the half mirror as a gaze target area, and selectively generates the depth map for the gaze target area. do, The information processing device according to (11) above. (13) The depth calculation unit stops generating the depth map when the point of gaze deviates from the gaze target area. The information processing device according to (12) above. (14) The depth calculation unit adopts, as the depth information, the depth information before the gaze point deviates from the gaze target area or the default depth information. The information processing device according to (13) above. (15) The display generation unit stops outputting the display object during a period in which the gaze point deviates from the gaze target area. The information processing apparatus according to (13) or (14) above.
- the display generation unit temporarily erases the display of the display object or dims the display in a delay period generated from the movement of the gaze point to the adjustment of the superimposing optical system.
- the display generation unit notifies that the presentation position of the display object is being adjusted in a delay period generated from the movement of the gaze point to the adjustment of the superimposing optical system.
- the display generation unit gradually changes the observed position of the display object within a delay period generated from the movement of the gaze point to the adjustment of the superimposing optical system.
- the depth calculation unit generates, as preliminary information, the depth information of one or more expected gaze points at which gaze is expected,
- the driving calculation unit extracts from the preliminary information the depth information of the predicted point of gaze that matches the point of gaze, and controls the driving of the superimposing optical system based on the extracted depth information.
- the information processing apparatus according to (10) above.
- the depth calculation unit generates calibration information based on the bias of the presentation position of the display object.
- the information processing apparatus according to any one of (1) to (19) above.
- the gaze point calculation unit calculates the gaze point based on the sight line when the sight line can be detected, and calculates the gaze point based on indirect information suggesting the sight line when the sight line cannot be detected. to calculate The information processing apparatus according to any one of (1) to (20) above.
- the gaze point calculation unit notifies the user when the line of sight cannot be detected.
- the information processing device according to (21) above.
- the display generation unit generates the display object superimposed on one virtual image area
- the driving calculation unit drives the superimposing optical system based on the depth information of the one virtual image area
- the gaze point calculation unit calculates the gaze point of a user observing the display object presented as an image having a depth corresponding to the depth information of the one virtual image area
- the driving calculation unit drives the superimposing optical system based on the depth information of the other virtual image area when the point of gaze moves to the other virtual image area
- the display generation unit gradually changes the observed position of the display object within a period in which the superimposing optical system is adjusted based on the depth information of the other virtual image area.
- the information processing apparatus according to any one of (1) to (22) above.
- (24) Calculate the gaze point on the virtual image reflected in the half mirror, generating depth information about the depth of the gaze point; generating a display object superimposed on the virtual image; driving a superimposing optical system of the display object so that the display object is viewed as an image having a depth corresponding to the depth information;
- a computer-implemented information processing method comprising: (25) Calculate the gaze point on the virtual image reflected in the half mirror, generating depth information about the depth of the gaze point; generating a display object superimposed on the virtual image; driving a superimposing optical system of the display object so that the display object is viewed as an image having a depth corresponding to the depth information;
- a program that makes a computer do something comprising: (25) Calculate the gaze point on the virtual image reflected in the half mirror, generating depth information about the depth of the gaze point; generating a display object superimposed on the virtual image; driving a superimposing optical system of the display object so that the
- processing unit information processing device
- processing unit information processing device
- half mirror superimposing optical system
- lens unit full mirror
- 51 gaze point calculator 52
- depth calculator 53
- display generator 55
- drive calculator AF variable focus lens DI display object ES line of sight
- EY user's eye GP gaze point PM phase modulation element US User VI Virtual image VI PA gaze target area
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Abstract
Description
[1.概要]
[2.表示システムの構成]
[3.情報処理方法]
[4.表示オブジェクトの呈示位置の制御]
[4-1.重畳光学系のバリエーション]
[4-2.表示オブジェクトの倍率の調整]
[4-3.視線の検出に失敗した場合の処理]
[4-4.キャリブレーション]
[5.奥行情報の検出タイミング]
[6.距離情報の生成範囲]
[7.注視対象領域から視線が逸れた場合の処理]
[8.適用例]
[8-1.メイクアップ作業]
[8-2.デジタルサイネージ]
[8-3.車内バックミラー]
[9.効果]
図1は、発明の背景を説明するための図である。
図2は、表示システム1の一例を示す図である。図3は、表示システム1の変形例を示す図である。図4は、表示システム1の機能構成を示す図である。図5は、虚像VIと注視点GPとの関係を示す図である。
図6は、注視点GPの変化に応じた重畳光学系30の調整例を示す図である。図7は、情報処理のフローを示す図である。図6を参照しながら、図7の処理を説明する。
[4-1.重畳光学系のバリエーション]
図8ないし図10は、重畳光学系30のバリエーションを示す図である。
レンズ部31の配置や光学特性を変更すると、倍率が変化し、ユーザUSに観察される表示オブジェクトDIのサイズが変化する可能性がある。そのため、処理部10は、重畳光学系30の駆動に伴う表示オブジェクトDIの表示倍率の変化を相殺する手段を有する。例えば、表示生成部53は、重畳光学系30の駆動に伴う表示オブジェクトDIの表示倍率の変化を相殺するように、表示オブジェクトDIのサイズを調節する。
何らかの障害によって視線ESの検出に失敗した場合には、次のような処理が行われる。例えば、データ処理部11は、動作モードとして、視線検出が可能な状況で実施される通常モードと、視線検出が不可能な状況で実施されるエラー対応モードと、を有する。
表示オブジェクトDIの呈示状況に応じてキャリブレーションが実施されてもよい。例えば、ユーザUSの近辺に設置されたカメラからハーフミラー21が撮影される。奥行算出部52は、撮影画像に基づいて、表示オブジェクトDIが所望の位置に呈示されているか否かを判定する。例えば、奥行算出部52は、表示オブジェクトDIの呈示位置の偏りに基づいて、キャリブレーション情報を生成する。キャリブレーション情報には、例えば、目的とする表示オブジェクトDIの呈示位置と実際の呈示位置とのずれに関する情報が含まれる。駆動計算部55は、キャリブレーション情報に基づいて、重畳光学系30の駆動量を算出するためのパラメータを修正する。
図12ないし図14は、奥行情報の検出タイミングのバリエーションを示す図である。
図15は、距離認識部14による距離情報の生成範囲の一例を示す図である。
図16は、注視対象領域VIPAから一時的に視線ESが逸れた場合の処理を説明する図である。
[8-1.メイクアップ作業]
図17ないし図19は、表示システム1がメイクアップ作業に用いられる例を示す図である。
表示オブジェクトDIの重畳対象が変化することを考えて、一工程を一作業と考える。例えば、データ処理部11は、ユーザUSの身体の向きが一定時間以上ハーフミラー21に向いている場合に作業が開始されたと判定する。データ処理部11は、道具TLの姿勢情報とあわせることでより正確な開始タイミングを把握することもできる。
ユーザUSが注視する対象物は連続的な細かい凹凸がある顔であるため、精度の高い注視点GPの検出が必要となる。そのため、常時視線ESを検出してユーザUSの注視点GPを算出し、微細な変化にも対応できるようにする必要がある。
道具TLの姿勢情報とあわせて奥行き検出の精度を向上することができる。例えば、道具TLの傾きの変化量が少ない場合、一定時間同じ作業を継続していると判定することができる。このように、対象を一瞬見ただけなのか、それとも注視しているのかどうか、といったユーザUSの作業継続の意思を道具TLの姿勢情報から読み取ることができる。
家庭用の化粧台などへの応用が考えられるため、小型化が可能な図3あるいは図10のような光学制御系が考えられる。
データ処理部11は、例えば、ユーザUSが道具TLを手から離し、一工程を終えた際に作業終了と判定する。
注視点GPに奥行きの異なる複数の虚像領域(瞼と睫毛など)が存在する場合、視線誘導をしながら表示オブジェクトDIを適切に位置に呈示することができる。例えば、ユーザUSが、奥行きの微妙に異なる2つの虚像領域の境界部を注視していた場合、2つの虚像領域に正しく重畳できるようにすることは難しい。その場合には、奥行距離として両方の距離を保持した状態で、表示オブジェクトDIをどちらかの奥行きに先に合わせ、ユーザUSの視線ESを追う。
図20は、表示システム1がデジタルサイネージに用いられる例を示す図である。
不特定多数のユーザUSに表示オブジェクトDIを呈示したい場合は、可視光カメラ41から取得された可視光映像に基づいて、ハーフミラー21を注視するユーザUSが特定される。例えば、データ処理部11は、ユーザUSの視線ESの向きが一定時間以上ハーフミラー21に向けられたときに作業が開始されたと判定する。ただし、興味のあるユーザUSのみに表示オブジェクトDIを呈示したい場合には、可視光映像からユーザUSの身体の向きなどを取得し、身体がハーフミラー21に向けられたときにのみ開始する、などの工夫が考えられる。
可視光カメラ41から取得された可視光映像を用いて、複数のユーザUSの視線が検出される。視線検出には、例えば、複数人の視線検出が可能なOpenGazeなどの技術が用いられる。
図20の例では、洋服の試着が画像合成によって行われる。ユーザUSは、試着したい洋服を選択し、試着したい身体の部位を注視する。奥行情報は注視点GPの算出後に行われる。表示生成部53は、選択された洋服の画像を表示オブジェクトDIとして出力する。駆動計算部55は、注視点GPに応じた奥行方向の位置に表示オブジェクトDIを呈示させる。
複数人のユーザが様々な角度からシステムをのぞき込むため、図3と図10とを組み合わせたような光学制御系が考えられる。
データ処理部11は、例えば、ユーザUSが立ち去ったときに作業終了と判定する。ただし公共の場での広告システムなどの場合、ユーザUSが立ち去った後もすぐに表示を停止すると、第3者から見た場合に不自然な広告となる。そのため、広告として流れる一まとまりの映像および音声(1ループ)が終了するまで表示が続行される。これにより、見た目の良さを損なわずに広告を終了することができる。他にユーザUSがいる場合には、そのユーザUSに合わせた奥行き方向の位置に表示オブジェクトDIの表示を合わせていく、あるいは自然にフェードしていくような映像を呈示することも考えられる。
図21は、表示システム1が車内バックミラーに用いられる例を示す図である。
安全のため、ユーザUSが運転を開始したときから、常に視線ESの検出が行われる。表示オブジェクトDIの重畳は、バックミラーに付属するセンサ部40でユーザUSの視線ESを取得したときに開始される。危険を察知した場合などには、ユーザUSの視線ESが外れている場合でも、視線誘導するような表示をすることも可能である。図21の例では、接近中の車を矢印で示し、ユーザUSに危険を通知している。
運転の最中に表示システム1を使用することが想定されるため、例えば焦点が合わないなどのユーザUSが不快に感じてしまう表示は避ける必要がある。そのため、常時視線ESを検出してユーザUSの注視点GPを算出し、微細な変化にも対応できるようにする必要がある。
運転中にユーザUSがバックミラーを見た場合、ユーザUSは目的を持ってバックミラーを見たものと考えられる。そのため、ユーザUSの視線ESが検出された場合には直ちに奥行距離が検出される。例えば、ハーフミラー21を介したユーザUSの視野範囲VA全体が注視対象領域として設定され、注視対象領域の奥行マップが事前に検出される。奥行マップに基づいて注視点GPの奥行距離が速やかに検出されることで、遅延のない制御が可能になる。
小型化が必要なため、図3あるいは図10のような光学制御系が考えられる。
データ処理部11は、例えば、一定時間以上バックミラーから視線ESが外れた場合に、表示オブジェクトDIの呈示をやめることができる。またユーザUSが運転を終了した場合には視線検出を終了することができる。
処理部10は、注視点算出部51と奥行算出部52と表示生成部53と駆動計算部55とを有する。注視点算出部51は、ハーフミラー21に映る虚像VI上の注視点GPを算出する。奥行算出部52は、注視点GPの奥行きに関する奥行情報を生成する。表示生成部53は、虚像VIに重畳される表示オブジェクトDIを生成する。駆動計算部55は、表示オブジェクトDIが奥行情報に応じた奥行きを持つ画像として観察されるように表示オブジェクトDIの重畳光学系30を駆動する。本実施形態の情報処理方法は、上述した処理部10の処理がコンピュータにより実行される。本実施形態のプログラムは、上述した処理部10の処理をコンピュータに実現させる。
なお、本技術は以下のような構成も取ることができる。
(1)
ハーフミラーに映る虚像上の注視点を算出する注視点算出部と、
前記注視点の奥行きに関する奥行情報を生成する奥行算出部と、
前記虚像に重畳される表示オブジェクトを生成する表示生成部と、
前記表示オブジェクトが前記奥行情報に応じた奥行きを持つ画像として観察されるように前記表示オブジェクトの重畳光学系を駆動する駆動計算部と、
を有する情報処理装置。
(2)
前記駆動計算部は、ユーザの目と前記注視点との相対位置に基づいて前記重畳光学系の駆動量を算出する、
上記(1)に記載の情報処理装置。
(3)
前記駆動計算部は、前記重畳光学系に含まれるレンズ部およびフルミラーの光学的配置および光学特性を制御することにより、前記表示オブジェクトが観察される奥行方向の位置を調節する、
上記(1)または(2)に記載の情報処理装置。
(4)
前記駆動計算部は、前記重畳光学系に含まれる可変焦点レンズの焦点距離を制御することにより、前記表示オブジェクトが観察される奥行方向の位置を調節する、
上記(1)または(2)に記載の情報処理装置。
(5)
前記駆動計算部は、前記重畳光学系に含まれる位相変調素子の位相変調量を領域ごとに制御することにより、前記表示オブジェクトが観察される奥行方向の位置を調節する、
上記(1)または(2)に記載の情報処理装置。
(6)
前記重畳光学系の駆動に伴う前記表示オブジェクトの表示倍率の変化を相殺する手段を有する、
上記(1)ないし(5)のいずれか1つに記載の情報処理装置。
(7)
前記表示生成部は、前記重畳光学系の駆動に伴う前記表示オブジェクトの表示倍率の変化を相殺するように、前記表示オブジェクトのサイズを調節する、
上記(6)に記載の情報処理装置。
(8)
前記駆動計算部は、前記重畳光学系の駆動に伴う前記表示オブジェクトの表示倍率の変化を相殺するように、ビームエキスパンダによって前記表示オブジェクトのサイズを調節する、
上記(6)に記載の情報処理装置。
(9)
前記奥行算出部は、前記ハーフミラーから、前記注視点に対応する実像上の対応点までの奥行方向の距離に基づいて前記奥行情報を生成する、
上記(1)ないし(8)のいずれか1つに記載の情報処理装置。
(10)
前記奥行算出部は、注視が行われる状況に基づいて、前記奥行情報の生成タイミングおよび生成範囲を決定する、
上記(1)ないし(9)のいずれか1つに記載の情報処理装置。
(11)
前記奥行算出部は、前記虚像の奥行きの分布を示す奥行マップを生成し、
前記駆動計算部は、前記奥行マップから抽出された前記注視点の前記奥行情報に基づいて前記重畳光学系の駆動を制御する、
上記(10)に記載の情報処理装置。
(12)
前記奥行算出部は、前記ハーフミラーに映る前記虚像のうち、前記状況に応じた特定の範囲の前記虚像を注視対象領域として設定し、前記注視対象領域に対して選択的に前記奥行マップを生成する、
上記(11)に記載の情報処理装置。
(13)
前記奥行算出部は、前記注視点が前記注視対象領域から逸れた場合には、前記奥行マップの生成を停止する、
上記(12)に記載の情報処理装置。
(14)
前記奥行算出部は、前記奥行情報として、前記注視点が前記注視対象領域から逸れる前の前記奥行情報もしくはデフォルトの前記奥行情報を採用する、
上記(13)に記載の情報処理装置。
(15)
前記表示生成部は、前記注視点が前記注視対象領域から逸れている期間は、前記表示オブジェクトの出力を停止する、
上記(13)または(14)に記載の情報処理装置。
(16)
前記表示生成部は、前記注視点の移動から前記重畳光学系の調整までに生じた遅延期間において、前記表示オブジェクトの表示を一時的に消す、または表示を薄くする、
上記(10)に記載の情報処理装置。
(17)
前記表示生成部は、前記注視点の移動から前記重畳光学系の調整までに生じた遅延期間において、前記表示オブジェクトの呈示位置を調整中である旨の通知を行う、
上記(10)に記載の情報処理装置。
(18)
前記表示生成部は、前記注視点の移動から前記重畳光学系の調整までに生じた遅延期間内で徐々に前記表示オブジェクトの観察される位置を変化させる、
上記(10)に記載の情報処理装置。
(19)
前記奥行算出部は、注視が予想される1以上の予想注視点の前記奥行情報を予備情報として生成し、
前記駆動計算部は、前記注視点と一致する予想注視点の前記奥行情報を前記予備情報から抽出し、抽出された前記奥行情報に基づいて前記重畳光学系の駆動を制御する、
上記(10)に記載の情報処理装置。
(20)
前記奥行算出部は、前記表示オブジェクトの呈示位置の偏りに基づいて、キャリブレーション情報を生成する、
上記(1)ないし(19)のいずれか1つに記載の情報処理装置。
(21)
前記注視点算出部は、視線が検出可能な場合には、前記視線に基づいて前記注視点を算出し、前記視線が検出できない場合には、前記視線を示唆する間接情報に基づいて前記注視点を算出する、
上記(1)ないし(20)のいずれか1つに記載の情報処理装置。
(22)
前記注視点算出部は、前記視線が検出できない場合には、ユーザに通知を行う、
上記(21)に記載の情報処理装置。
(23)
前記注視点が、奥行方向の異なる2つの虚像領域の境界部で検出された場合には、
前記表示生成部は、一方の虚像領域に重畳される前記表示オブジェクトを生成し、
前記駆動計算部は、前記一方の虚像領域の前記奥行情報に基づいて前記重畳光学系を駆動し、
前記注視点算出部は、前記一方の虚像領域の前記奥行情報に応じた奥行きを持つ画像として呈示された前記表示オブジェクトを観察するユーザの前記注視点を算出し、
前記駆動計算部は、前記注視点が他方の前記虚像領域に移動した場合には、前記他方の虚像領域の前記奥行情報に基づいて前記重畳光学系を駆動し、
前記表示生成部は、前記他方の虚像領域の前記奥行情報に基づいて前記重畳光学系の調整が実施される期間内で徐々に前記表示オブジェクトの観察される位置を変化させる、
上記(1)ないし(22)のいずれか1つに記載の情報処理装置。
(24)
ハーフミラーに映る虚像上の注視点を算出し、
前記注視点の奥行きに関する奥行情報を生成し、
前記虚像に重畳される表示オブジェクトを生成し、
前記表示オブジェクトが前記奥行情報に応じた奥行きを持つ画像として観察されるように前記表示オブジェクトの重畳光学系を駆動する、
ことを有する、コンピュータにより実行される情報処理方法。
(25)
ハーフミラーに映る虚像上の注視点を算出し、
前記注視点の奥行きに関する奥行情報を生成し、
前記虚像に重畳される表示オブジェクトを生成し、
前記表示オブジェクトが前記奥行情報に応じた奥行きを持つ画像として観察されるように前記表示オブジェクトの重畳光学系を駆動する、
ことをコンピュータに実現させるプログラム。
21 ハーフミラー
30 重畳光学系
31 レンズ部
33 フルミラー
51 注視点算出部
52 奥行算出部
53 表示生成部
55 駆動計算部
AF 可変焦点レンズ
DI 表示オブジェクト
ES 視線
EY ユーザの目
GP 注視点
PM 位相変調素子
US ユーザ
VI 虚像
VIPA 注視対象領域
Claims (20)
- ハーフミラーに映る虚像上の注視点を算出する注視点算出部と、
前記注視点の奥行きに関する奥行情報を生成する奥行算出部と、
前記虚像に重畳される表示オブジェクトを生成する表示生成部と、
前記表示オブジェクトが前記奥行情報に応じた奥行きを持つ画像として観察されるように前記表示オブジェクトの重畳光学系を駆動する駆動計算部と、
を有する情報処理装置。 - 前記駆動計算部は、ユーザの目と前記注視点との相対位置に基づいて前記重畳光学系の駆動量を算出する、
請求項1に記載の情報処理装置。 - 前記重畳光学系の駆動に伴う前記表示オブジェクトの表示倍率の変化を相殺する手段を有する、
請求項1に記載の情報処理装置。 - 前記奥行算出部は、前記ハーフミラーから、前記注視点に対応する実像上の対応点までの奥行方向の距離に基づいて前記奥行情報を生成する、
請求項1に記載の情報処理装置。 - 前記奥行算出部は、注視が行われる状況に基づいて、前記奥行情報の生成タイミングおよび生成範囲を決定する、
請求項1に記載の情報処理装置。 - 前記奥行算出部は、前記虚像の奥行きの分布を示す奥行マップを生成し、
前記駆動計算部は、前記奥行マップから抽出された前記注視点の前記奥行情報に基づいて前記重畳光学系の駆動を制御する、
請求項5に記載の情報処理装置。 - 前記奥行算出部は、前記ハーフミラーに映る前記虚像のうち、前記状況に応じた特定の範囲の前記虚像を注視対象領域として設定し、前記注視対象領域に対して選択的に前記奥行マップを生成する、
請求項6に記載の情報処理装置。 - 前記奥行算出部は、前記注視点が前記注視対象領域から逸れた場合には、前記奥行マップの生成を停止する、
請求項7に記載の情報処理装置。 - 前記奥行算出部は、前記奥行情報として、前記注視点が前記注視対象領域から逸れる前の前記奥行情報もしくはデフォルトの前記奥行情報を採用する、
請求項8に記載の情報処理装置。 - 前記表示生成部は、前記注視点が前記注視対象領域から逸れている期間は、前記表示オブジェクトの出力を停止する、
請求項8に記載の情報処理装置。 - 前記表示生成部は、前記注視点の移動から前記重畳光学系の調整までに生じた遅延期間において、前記表示オブジェクトの表示を一時的に消す、または表示を薄くする、
請求項5に記載の情報処理装置。 - 前記表示生成部は、前記注視点の移動から前記重畳光学系の調整までに生じた遅延期間において、前記表示オブジェクトの呈示位置を調整中である旨の通知を行う、
請求項5に記載の情報処理装置。 - 前記表示生成部は、前記注視点の移動から前記重畳光学系の調整までに生じた遅延期間内で徐々に前記表示オブジェクトの観察される位置を変化させる、
請求項5に記載の情報処理装置。 - 前記奥行算出部は、注視が予想される1以上の予想注視点の前記奥行情報を予備情報として生成し、
前記駆動計算部は、前記注視点と一致する予想注視点の前記奥行情報を前記予備情報から抽出し、抽出された前記奥行情報に基づいて前記重畳光学系の駆動を制御する、
請求項5に記載の情報処理装置。 - 前記奥行算出部は、前記表示オブジェクトの呈示位置の偏りに基づいて、キャリブレーション情報を生成する、
請求項1に記載の情報処理装置。 - 前記注視点算出部は、視線が検出可能な場合には、前記視線に基づいて前記注視点を算出し、前記視線が検出できない場合には、前記視線を示唆する間接情報に基づいて前記注視点を算出する、
請求項1に記載の情報処理装置。 - 前記注視点算出部は、前記視線が検出できない場合には、ユーザに通知を行う、
請求項16に記載の情報処理装置。 - 前記注視点が、奥行方向の異なる2つの虚像領域の境界部で検出された場合には、
前記表示生成部は、一方の虚像領域に重畳される前記表示オブジェクトを生成し、
前記駆動計算部は、前記一方の虚像領域の前記奥行情報に基づいて前記重畳光学系を駆動し、
前記注視点算出部は、前記一方の虚像領域の前記奥行情報に応じた奥行きを持つ画像として呈示された前記表示オブジェクトを観察するユーザの前記注視点を算出し、
前記駆動計算部は、前記注視点が他方の前記虚像領域に移動した場合には、前記他方の虚像領域の前記奥行情報に基づいて前記重畳光学系を駆動し、
前記表示生成部は、前記他方の虚像領域の前記奥行情報に基づいて前記重畳光学系の調整が実施される期間内で徐々に前記表示オブジェクトの観察される位置を変化させる、
請求項1に記載の情報処理装置。 - ハーフミラーに映る虚像上の注視点を算出し、
前記注視点の奥行きに関する奥行情報を生成し、
前記虚像に重畳される表示オブジェクトを生成し、
前記表示オブジェクトが前記奥行情報に応じた奥行きを持つ画像として観察されるように前記表示オブジェクトの重畳光学系を駆動する、
ことを有する、コンピュータにより実行される情報処理方法。 - ハーフミラーに映る虚像上の注視点を算出し、
前記注視点の奥行きに関する奥行情報を生成し、
前記虚像に重畳される表示オブジェクトを生成し、
前記表示オブジェクトが前記奥行情報に応じた奥行きを持つ画像として観察されるように前記表示オブジェクトの重畳光学系を駆動する、
ことをコンピュータに実現させるプログラム。
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