WO2016103769A1 - 操作入力装置、操作入力方法及びプログラム - Google Patents
操作入力装置、操作入力方法及びプログラム Download PDFInfo
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- WO2016103769A1 WO2016103769A1 PCT/JP2015/069451 JP2015069451W WO2016103769A1 WO 2016103769 A1 WO2016103769 A1 WO 2016103769A1 JP 2015069451 W JP2015069451 W JP 2015069451W WO 2016103769 A1 WO2016103769 A1 WO 2016103769A1
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/017—Gesture based interaction, e.g. based on a set of recognized hand gestures
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- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
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- G06—COMPUTING; CALCULATING OR COUNTING
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- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/033—Pointing devices displaced or positioned by the user, e.g. mice, trackballs, pens or joysticks; Accessories therefor
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- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/033—Pointing devices displaced or positioned by the user, e.g. mice, trackballs, pens or joysticks; Accessories therefor
- G06F3/0346—Pointing devices displaced or positioned by the user, e.g. mice, trackballs, pens or joysticks; Accessories therefor with detection of the device orientation or free movement in a 3D space, e.g. 3D mice, 6-DOF [six degrees of freedom] pointers using gyroscopes, accelerometers or tilt-sensors
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- G06F3/048—Interaction techniques based on graphical user interfaces [GUI]
- G06F3/0481—Interaction techniques based on graphical user interfaces [GUI] based on specific properties of the displayed interaction object or a metaphor-based environment, e.g. interaction with desktop elements like windows or icons, or assisted by a cursor's changing behaviour or appearance
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- G06F3/0484—Interaction techniques based on graphical user interfaces [GUI] for the control of specific functions or operations, e.g. selecting or manipulating an object, an image or a displayed text element, setting a parameter value or selecting a range
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- G06F2203/04806—Zoom, i.e. interaction techniques or interactors for controlling the zooming operation
Definitions
- the present invention relates to an operation input device, an operation input method, and a program for inputting information related to an operation of an operator to an information device.
- Non-contact operation input devices are attracting attention as a means that can lighten the operator's operational burden and can operate information equipment even during operation at surgical sites and cooking sites.
- Such an operation input device includes, for example, an apparatus in which an operator is photographed with a camera, image analysis is performed, and operation input is performed to an information device based on the image analysis result (for example, Patent Document 1).
- the operation control device described in Patent Document 1 detects a hand or the like that moves by a user's action using a stereo camera, determines the action of the hand or the like, and moves the cursor in the display area according to the determined action. Is.
- the operation control device moves the cursor and the cursor movable region based on the first detection target motion, and moves only the cursor within the cursor movable region based on the second detection target motion. It is described that this configuration makes it possible to operate an operation target intuitively and with high accuracy.
- the present applicant also filed an application for an input device that performs operation input based on an image obtained by photographing an operator with a camera (for example, Patent Document 2).
- the input device described in Patent Document 2 photographs an operator with two video cameras arranged side by side, and measures the distance from the video camera to the operator's hand or finger. When the measured distance is within the preset allowable range of depth distance, the movement of the hand or finger is detected.
- the virtual cursor is moved within the display screen according to the detection result, or various operations such as a selection operation are discriminated to generate an operation input signal. As a result, the operator can be distinguished from the background that causes noise, and an accurate operation input signal can be generated.
- the first and second detection targets are detected, and the cursor or the movable region of the cursor is moved according to each operation, so that the process of tracking the two detection targets is complicated. Met.
- the operator needs to perform an operation in consideration of the first detection target and the second detection target, and a deviation may occur between the operator's operation feeling and the cursor movement.
- Patent Document 2 cannot be operated on the display screen when the operator moves in the imaging space of the camera or when the operator operates without grasping the field of view of the camera. There was a problem of creating a new area.
- the operation input device has a simple configuration using a single camera, the distance in the camera's line of sight cannot be measured. It was difficult to detect accurately.
- the present invention has been made in view of the above circumstances, and an object thereof is to provide an operation input device and the like capable of performing an intuitive operation input that matches an operator's operation feeling regardless of the position of the operator. .
- an operation input device provides: Display, A camera to photograph the operator; A finger image detection unit that acquires a frame image captured by the camera and detects a finger image indicating the hand or finger of the operator from the frame image; An operation region specifying unit that specifies an operation region in which the operation of the operator is effective from the visual field region of the camera, based on the position or size of the finger image detected by the finger image detection unit in the frame image; An area mapping unit that maps the operation area specified by the operation area specifying unit to a display area of the display, and generates mapping information indicating a correspondence relationship between the operation area and the display area; The coordinates in the operation area of the finger image detected by the finger image detection unit are converted into coordinates in the display area using the mapping information, and the position, size, or shape of the finger image in the converted coordinates Based on the operation input signal generation unit for generating an operation input signal indicating the operation input of the operator, It is characterized by providing.
- the operation area specifying unit may specify, as the operation area, an area where the finger image exists from an area in which a change in image exceeds a predetermined range in a plurality of consecutive frame images.
- the finger image detection unit may detect the finger image by dividing the frame image into a predetermined number of divided regions and sequentially searching the divided regions.
- the finger image detection unit may detect the finger image by enlarging or reducing the image in the divided area when the finger image cannot be detected in the divided area.
- the area mapping unit performs mapping so that an enlargement ratio of the display area with respect to the operation area is increased from a center of the operation area toward an end of the operation area, and coordinates between the operation area and the display area Mapping information indicating the corresponding relationship may be generated.
- the area mapping unit virtually maps the points arranged on the convex surface at regular intervals from the convex direction in the operation area, and places the same number of points in the display area as the virtual points in the operation area.
- Mapping information may be generated in which the coordinates of the points arranged in the operation area and the coordinates of the points arranged in the display area are associated with each other at regular intervals.
- the operation input signal generation unit uses the mapping information to convert the coordinates of the finger image in the operation area into coordinates in the display area of the display, and displays a cursor at the position of the converted finger image. You may do it.
- the operation input signal generation unit When the operation input signal generation unit detects that the position of the finger image has changed, the operation input signal generation unit displays the cursor in a manner that can identify that the operator's hand is moving. Then, when it is detected that the shape of the finger image has changed in a predetermined manner, the operation input signal generation unit displays the cursor in a manner that can identify that the operator has performed a click operation. May be.
- the finger image detection unit detects two finger images from the frame image
- the operation input signal generation unit is centered on a Z axis perpendicular to the display surface of the display when the vertical coordinates of the display of the two finger images detected by the finger image detection unit are relatively changed.
- the operation input signal for rotating or scrolling up or down may be generated.
- the finger image detection unit detects two finger images from the frame image, When the size of the two finger images detected by the finger image detection unit is relatively changed, the operation input signal generation unit rotates around the Y axis in the vertical direction of the display, or zooms in or The operation input signal for zooming out may be generated.
- An operation input method includes: A computer connected to the camera and the display is an operation input method for inputting the operation of the operator based on a finger image indicating the hand or finger of the operator photographed by the camera, A finger image detection step of acquiring a frame image captured by the camera and detecting a finger image indicating the operator's hand or finger from the frame image; An operation region specifying step for specifying an operation region in which the operator's operation is effective from the visual field region of the camera, based on the position or size in the frame image of the finger image detected in the finger image detection step; An area mapping step for mapping the operation area specified in the operation area specifying step to a display area of the display, and generating mapping information indicating a correspondence relationship between the operation area and the display area; The coordinates in the operation area of the finger image detected in the finger image detection step are converted into coordinates in the display area using the mapping information, and the position, size, or shape of the finger image in the converted coordinates Based on the operation input signal generation step of generating an
- a program is: A computer connected to the camera and display A finger image detection unit that acquires a frame image captured by the camera and detects a finger image indicating an operator's hand or finger from the frame image; An operation region specifying unit that specifies an operation region in which the operator's operation is effective from the visual field region of the camera, based on the position or size of the finger image in the frame image detected by the finger image detection unit, An area mapping unit that maps the operation area specified by the operation area specifying unit to a display area of the display and generates mapping information indicating a correspondence relationship between the operation area and the display area; The coordinates in the operation area of the finger image detected by the finger image detection unit are converted into coordinates in the display area using the mapping information, and the position, size, or shape of the finger image in the converted coordinates Based on the operation input signal generation unit for generating an operation input signal indicating the operation input of the operator, It is made to function as.
- FIG. 6 is a diagram illustrating mapping between an operation area and a display area according to the first embodiment. It is a flowchart of operation input processing. It is the figure which showed the display when a virtual cursor is displayed.
- A It is the figure which showed the cursor at the time of a movement.
- B It is the figure which showed the cursor at the time of a stop.
- C It is the figure which showed the example of click operation.
- FIG. 10 is a flowchart of an operation area specifying process according to the third embodiment.
- A It is the figure which looked at a display and an operator from the upper part.
- B It is the figure which showed the relationship between the position of an operator's hand and the position of the hand which a camera discriminate
- FIG. 10 is a diagram showing mapping between an operation area and a display area according to the fourth embodiment.
- the operation input device 10 is an information processing device that performs processing based on an operation input signal generated by discriminating an operator's operation.
- the operation input device 10 includes a CPU (Central Processing Unit) 11, a camera 12, a RAM (Random Access Memory) 13, a display 14, and a storage unit 15.
- the operation input device 10 is composed of an arbitrary information processing terminal such as a personal computer, a smartphone, or a tablet terminal on which an operation input processing program is installed.
- the camera 12 may be a web camera or the like built in these information processing terminals, or may be an externally connected camera.
- the camera 12 is a color camera that outputs color image data in real time.
- the camera 12 is installed with the line-of-sight direction substantially perpendicular to the display surface of the display 14 and away from the display surface.
- the camera 12 is installed on the upper edge of the display 14.
- the RAM 13 is a memory capable of reading and writing data at high speed, and temporarily stores image data taken by the camera 12 and image data read from the storage unit 15 for data processing executed by the CPU 11.
- the display 14 is a display device that displays and outputs information such as images and characters, and displays images and the like generated by the CPU 11.
- the storage unit 15 is a large-capacity storage device and includes a flash memory or the like. Image data photographed by the camera 12 and image data generated by the processing of the CPU 11 are stored.
- the storage unit 14 stores a program executed by the CPU 11.
- the CPU 11 and the RAM 13 execute an operation input processing program stored in the storage unit 14, whereby an image acquisition unit 111, a finger image detection unit 112, an operation area specifying unit 113, an area mapping are performed as illustrated in FIG. 2.
- the image acquisition unit 111 acquires image data captured by the camera 12.
- the image acquisition unit 111 outputs a frame image at a predetermined timing included in the image data captured by the camera 12 to the finger image detection unit 112 at a predetermined time interval.
- the finger image detection unit 112 detects a finger image indicating a human hand or finger from the frame image input from the image acquisition unit 111, and acquires information on the size and position of the detected hand or finger.
- a method for detecting a hand image of a human hand or a finger is any conventional method. In the present embodiment, a case will be described in which an image of a hand 101 with a finger including a palm spread is detected.
- a color image of a specific color for example, skin color
- a color mask for example, skin color
- binarization processing is performed on the frame image.
- a logical sum of the extracted image of the color mask obtained by these processes and the binarized image may be taken to detect the image of the hand 101 in the skin color portion.
- inter-frame difference processing is performed on two or more consecutive frame images or binarized two or more frame images, and a histogram is created from the obtained difference images.
- the activity area having a large change may be specified and the image of the hand 101 may be detected.
- a template of a human hand or finger may be stored in the storage unit 15 in advance, and template matching may be performed on the frame image input from the image acquisition unit 111 to detect the image of the hand 101.
- Information such as the size, position, and shape of the hand 101 detected by the finger image detection unit 112 is output to the operation region specifying unit 113 and the operation input signal generation unit 115.
- the operation region specifying unit 113 operates from the visual field region 1001 of the camera corresponding to the entire frame image acquired by the image acquisition unit 111. Specifies the operation area 1002 used for the operation.
- the operation area specifying unit 113 specifies an operation area when the operator operates using one hand and an operation area when operating using both hands.
- the frame image (camera field of view region 1001) acquired by the image acquisition unit 111 includes an operator image.
- Operation area specifying unit 113 acquires a width W of the hand 101 which is input from the hand image detection unit 112, the center position P 1 of the hand 101. Then, around the point P 1, to identify the operation area 1002 of width m ⁇ W.
- m is a predetermined positive coefficient and may be changed by the user.
- the frame image (camera field of view region 1001) acquired by the image acquisition unit 111 includes an operator image.
- Operation area specifying unit 113 obtains the center position P 3 of the center position P 2 and the left hand 101 of the right hand 101 which is input from the hand image detection unit 112. Then, around the middle point of the point P 2 and the point P 3, to identify the operation area 1003 of width n ⁇ L with respect to the distance L between the point P 2 and the point P 3.
- n is a predetermined positive coefficient and may be changed by the user.
- the height of the operation areas 1002 and 1003 specified by the operation area specifying unit 113 is a value obtained by multiplying the width determined based on the center positions P 1 , P 2 , and P 3 of the hand 101 by a predetermined ratio. Information on the operation areas 1002 and 1003 thus identified is output to the area mapping unit 114.
- the area mapping unit 114 maps the operation areas 1002 and 1003 input from the operation area specifying unit 113 to the display area 1004 that is the entire display area of the display 14.
- FIG. 5 shows a state where the operation area 1003 when both hands are used is mapped to the display area 1004. That is, the coordinate interval of the operation area 1003 is expanded at a constant ratio in the vertical direction and the horizontal direction, mapping information in which the coordinates of the operation area 1003 are associated with the coordinates of the display area 1004 is generated, and an operation input signal is generated. Output to the unit 115.
- the operation input signal generation unit 115 includes information on the position, size, or shape of the image of the hand 101 detected by the hand image detection unit 112, or information on temporal changes thereof, and mapping information generated by the region mapping unit 114. Based on this, an operation input signal indicated by the operation of the operator is generated.
- the operation input signal generation unit 115 displays a cursor on the display screen of the display 14. That is, the coordinates of the center position of the hand 101 detected by the finger image detection unit 112 are converted using the mapping information generated by the area mapping unit 114, and the cursor is displayed at the coordinates of the display area 1004 after conversion.
- the operation input signal generation unit 115 displays an icon or the like displayed on the display 14 in accordance with information on the position, size, or shape of the hand 101 detected by the hand image detection unit 112, or information on these temporal changes.
- An operation input signal for instructing selection, execution, or the like of the application to be generated is generated.
- the generated operation input signal is input to the application execution unit 116.
- the application execution unit 116 selects and executes an application based on the operation input signal input from the operation input signal generation unit 115.
- the operation input process starts when the finger image detection unit 112 detects the image of the hand 101.
- the finger image detection unit 112 sets the two-hand operation state when both hands are detected almost simultaneously from the state where the hand 101 is not detected, that is, when detection of two hands starts within a predetermined time (step S101: Yes). (Step S102).
- the operation area specifying unit 113 specifies the operation area 1003 of both hands as shown in the example of FIG. 4 (step S103).
- the area mapping unit 114 maps the operation area 1003 specified by the operation area specifying unit 113 to the display area 1004 (step S104).
- the operation input signal generation unit 115 generates an operation input signal corresponding to the temporal change in the size, relative position, and shape of both hands in the operation region 1003 mapped to the display region 1004, and the application execution unit 116 and the display 14 (Step S105). Based on the input operation input signal, the display 14 moves the cursor or changes the shape of the cursor, and the application execution unit 116 executes application processing.
- step S106 the operation input signal generation unit 115 continues to generate and output the operation input signal.
- step S106 when a certain time or more has passed after changing without detecting one hand or hand (step S106: Yes), when changing to one hand (step S107: Yes), the process proceeds to step S108.
- step S107: No When the change is made without detecting the hand (step S107: No), the process is terminated.
- step S101 when the finger image detection unit 112 does not detect both hands from the state where the hand 101 is not detected almost simultaneously, that is, when the detection of two hands is not started within a predetermined time (step S101: No), a one-handed operation state is set (step S108).
- the operation area specifying unit 113 specifies an operation area 1002 with one hand as shown in the example of FIG. 3 (step S109).
- the area mapping unit 114 maps the operation area 1002 specified by the operation area specifying unit 113 to the display area 1004 (step S110).
- the operation input signal generation unit 115 generates an operation input signal corresponding to the time change of the size, position, and shape of one hand in the operation region 1002 mapped to the display region 1004, and Output (step S111). Based on the input operation input signal, the display 14 moves the cursor or changes the shape of the cursor, and the application execution unit 116 executes application processing.
- step S112 While one hand is continuously detected and changes without detection of the hand and a predetermined time or more has not elapsed (step S112: No), the operation input signal generation unit 115 continues to generate and output the operation input signal ( Step S111).
- step S112 if it changes without detection of a hand and a predetermined time or more has elapsed (step S112: Yes), the process ends.
- An icon 2001 and an image 2002 as shown in FIG. 7 are displayed on the display 14 of the operation input device 10 will be described.
- An image 2002 is displayed by an image display application.
- the display 14 displays the cursor 2003 at the coordinate position converted by the mapping information.
- the shape of the cursor 2003 is preferably a shape that allows intuitive recognition of whether or not the operation of the operator is reflected.
- the shape of the cursor 2003 composed of one circle and a plurality of circles arranged at equal intervals around the circle is used.
- the color of the cursor 2003 changes depending on whether or not the icon 2001 or the image 2002 is at a selectable position.
- each circle of the cursor is a black circle.
- a white circle is set.
- the center circle is shifted in the moving direction as shown in FIG.
- the center circle is displayed so as to be positioned at a point equidistant from the center of the surrounding circles as shown in FIG.
- the operator's click operation should be easy to distinguish. For example, as shown in FIG. Alternatively, as shown in FIG. 8D, an operation of grasping from a state where the hand is opened is performed. When the operation input signal generation unit 115 detects such an operation, the operation input signal generation unit 115 determines that the click operation has been performed, and expands the circle at the center of the cursor 2003 to the left and right to have an elliptical shape as illustrated in FIG. Thus, the operator can know that the click operation has been determined.
- a virtual button 2004 of the submenu is displayed around the cursor 2003.
- the operator can select a submenu by moving the cursor 2003 toward each submenu.
- the application execution unit 116 can execute processing corresponding to a change in the relative position of the two cursors 2003. For example, as shown in FIG. 10, when two cursors 2003 are displayed in an image 2002 and moved in directions away from each other, a process (zoom-in) of the image 2002 is executed. On the other hand, when the two cursors 2003 are moved toward each other, a process (zoom out) for reducing the image 2002 is executed.
- page up or page down may be performed by moving only one cursor 2003 up and down. Further, the image 2002 may be rotated in the same direction by rotating the two cursors 2003 in the same direction around a point between the two cursors 2003.
- the image 2002 is enlarged or reduced by changing the relative position of the two cursors 2003 (the positions of both hands).
- the image 2002 may be enlarged or reduced. That is, when it is determined that the size of the hand 101 is relatively large by taking out one hand 101 forward, or the size of the hand 101 is relative by pulling the one hand 101 backward. When it is determined that the image has become smaller, zoom-in or zoom-out processing may be executed. Further, when it is determined that the relative size of the two hands has changed, a process of rotating the image 2002 around the Y axis that is the vertical direction of the display 14 may be executed.
- the finger image detecting unit 112 detects a finger image indicating the operator's hand or finger from the frame image captured by the camera, and the operation area specifying unit 113 detects the entire frame image of the finger image.
- the operation areas 1002 and 1003 are specified from the field-of-view area 1001 of the camera based on the position and size at. Then, the operation areas 1002 and 1003 specified by the area mapping unit 114 are mapped to the display area 1004.
- the operation input signal generation unit 115 acquires information on the position, size, or shape of a finger image in the mapped operation areas 1002 and 1003 or information on their temporal changes, and generates an operation input signal based on these information And output it. As a result, an intuitive operation input that matches the operator's operation feeling can be performed regardless of the operator's position.
- the operation input device 10 has the same configuration as that of the first embodiment and executes the same operation input processing, but the detection of the hand image (hand 101) executed by the hand image detection unit 112. The method is different. A method for detecting a finger image will be described in detail.
- the finger image detection unit 112 divides the frame image 1001 acquired by the image acquisition unit 111 into a predetermined number. Then, the divided areas are sequentially searched to detect a hand image of a human hand or finger, and information on the size and position of the detected hand or finger is acquired. For example, as shown in FIG. 11, the finger image is detected by searching in the order of the divided areas 1011 and 1012. The method for detecting a finger image in the divided area is the same as in the first embodiment.
- Information such as the size, position, and shape of the hand 101 detected by the finger image detection unit 112 is output to the operation region specifying unit 113 and the operation input signal generation unit 115.
- the size of the divided areas 1011 and 1012 is changed to be larger or smaller (that is, the image is reduced or enlarged), and the divided areas are again displayed.
- the finger image may be detected within the image.
- the operation area specifying unit 113 specifies the operation areas 1002 and 1003 based on the position or size of the finger image detected by the hand image detecting unit 112.
- the finger image detection unit 112 detects the finger image by sequentially searching the divided areas 1011 and 1012 obtained by dividing the frame image 1001 into a predetermined number, and specifies the operation area.
- the operation region is specified based on the position or size of the finger image detected by the unit 113. Accordingly, even when the size of the finger image is greatly different because the operator has moved back and forth in the direction of the line of sight of the camera, the finger image can be detected, and the optimum operation areas 1002 and 1003 are specified. be able to.
- the operation input device 10 has the same configuration as that of the first embodiment, but the operation input process is different. This will be described in detail along the flowchart of FIG.
- the finger image detection unit 112 acquires image information of consecutive past k frames (k is an integer of 2 or more) input from the image acquisition unit 111 (step S201).
- a histogram showing the difference in pixel value between frames is created for images of consecutive past k frames, and an image change region that is a region where the change is large, that is, a region where the difference in pixel value exceeds a predetermined range.
- Specify step S202).
- the finger image detection unit 112 selects an area where the finger image exists in the specified image change area (step S203).
- the method for searching for a finger image in the image change area is the same as in the first embodiment.
- the operation area specifying unit 113 specifies areas of a predetermined size including the selected area as operation areas 1002 and 1003 (step S204).
- the area mapping unit 114 maps the operation areas 1002 and 1003 specified in step S204 to the display area 1004 (step S205).
- step S204 when the hand image detection unit 112 detects both hands almost simultaneously from the state where the hand 101 is not detected, that is, the two hands are within a predetermined time.
- step S206: Yes the detection has started (step S206: Yes)
- step S207 the two-handed operation state is set (step S207).
- the operation input signal generation unit 115 generates an operation input signal corresponding to the temporal change in the size, relative position, and shape of both hands in the operation region 1003 mapped to the display region 1004, and the application execution unit 116 and the display 14 (Step S208). Based on the input operation input signal, the display 14 moves the cursor or changes the shape of the cursor, and the application execution unit 116 executes application processing.
- step S209 While both hands are continuously detected and change is made without detection of one hand or the hand and a predetermined time or more has not passed (step S209: No), the operation input signal generation unit 115 continues to generate and output the operation input signal. (Step S208).
- step S210: Yes when it changes without detection of one hand or the hand and a certain time or more has passed (step S209: Yes), when it changes to one hand (step S210: Yes), the process proceeds to step S211. When the change is made without detecting the hand (step S210: No), the process is terminated.
- step S206 when the finger image detection unit 112 has not detected both hands almost simultaneously from the state where the hand 101 is not detected, that is, when the detection of two hands has not started within a predetermined time (step S206).
- step S206: No the one-handed operation state is set (step S211).
- the operation input signal generation unit 115 generates an operation input signal corresponding to the time change of the size, position, and shape of one hand in the operation region 1002 mapped to the display region 1004, and Output (step S212). Based on the input operation input signal, the display 14 moves the cursor or changes the shape of the cursor, and the application execution unit 116 executes application processing.
- step S213 the operation input signal generation unit 115 continues to generate and output the operation input signal ( Step S212).
- step S213 if the time has changed without detecting the hand and a predetermined time has elapsed (step S213: Yes), the process is terminated.
- the operation area specifying unit 113 specifies an image change area in which a difference in pixel values between frames exceeds a predetermined range for a plurality of continuous frame images.
- the image change area the area including the area where the finger image exists is specified as the operation area.
- the operation input device 10 has the same configuration as that of the first or second embodiment and executes the same operation input process, but is executed by the area mapping unit 114 in steps S104 and S110 in FIG. Different mapping methods are used. The mapping method will be described in detail.
- the operation area specifying unit 113 specifies the operation area 1002 of one hand or the operation area 1003 of both hands as in the first or second embodiment.
- the hand 101 moves on the spherical shell around the elbow or shoulder. For this reason, when the hand is positioned at the center of the operation areas 1002 and 1003, that is, when the hand 101 is positioned in front of the human chest, the movement distance of the finger image detected by the finger image detection unit 112 is actually It is almost proportional to the movement distance of the hand. However, when the hand 101 is located at the end of the operation areas 1002 and 1003, that is, when the hand is located away from the human torso 102, the movement distance of the finger image is smaller than the actual movement distance of the hand. .
- the finger image when the person moves his hand from A to B moves from A 'to B', whereas the person moves his hand from B to C.
- the finger image at that time moves from B ′ to C ′.
- the length of the arc between AB and the length of the arc between BC are equal, but the distance between B'C 'is shorter than the distance between A'B'.
- the region mapping unit 114 assumes a convex virtual space in the operation regions 1002 and 1003 and maps it to the display region.
- the area mapping unit 114 sets the points of the arrangement as seen from the convex direction on the convex surface with the points arranged on the surface at regular intervals in the vertical and horizontal directions, Virtualize within 1003.
- the points of the arrangement in which the points arranged at regular intervals in the vertical and horizontal directions on the surface of the convex surface are projected from the convex direction onto the plane perpendicular to the convex direction are assumed.
- mapping information in which the coordinates of each point in the operation areas 1002 and 1003 are associated with the coordinates of each point in the display area 1004 is generated.
- mapping is performed so that the enlargement ratio of the display area 1004 with respect to the operation areas 1002 and 1003 increases as the distance from the center of the operation areas 1002 and 1003 approaches the edge.
- mapping information generated in this way it is possible to reduce the deviation of the operator's operational feeling and the movement of the cursor.
- the operation input signal generation unit 115 operates based on the operator's operation based on the information on the change in the size, position, and shape of the image of the hand 101 detected by the hand image detection unit 112 and the mapping information generated by the region mapping unit 114. Is generated.
- the coordinates of the points of the array obtained by projecting the points arranged at regular intervals on the convex surfaces imagined in the operation regions 1002 and 1003 by the region mapping unit 114 from the convex direction are displayed.
- Mapping information associated with the coordinates of points arranged at regular intervals in the region 1004 is generated, and the mapping information is used to detect the operation of the operator. As a result, it is possible to perform an operation input that further matches the operation feeling of the operator.
- the present invention detects a finger image indicating an operator's hand or finger from a frame image captured by the camera, maps an operation area in which the operator's operation is effective, out of the visual field area of the camera, to the display area of the display, Mapping information indicating the correspondence between the coordinates of the operation area and the display area is generated. Then, the coordinates in the operation area of the finger image are converted into the coordinates in the display area using the mapping information, and the operation indicating the operation input of the operator based on the position, size, or shape of the finger image at the converted coordinates. An input signal is generated. This makes it possible to perform intuitive operation input that matches the operator's operation feeling regardless of the operator's position.
- the operation area specifying unit 113 specifies the operation areas 1002 and 1003 based on the center position and width of one hand or the center position of both hands, but specifies the operation areas 1002 and 1003 based on the position information of other parts. You may do it.
- a human face may be recognized, and the vertical lengths of the operation areas 1002 and 1003 may be determined based on the vertical distance between the center position of the face and the center position of the hand.
- the operation areas 1002 and 1003 specified by the operation area specifying unit 113 are rectangular, the trapezoidal operation area is specified on the assumption that the surface direction of the display 14 and the body axis direction of the operator are not parallel. You may make it do.
- the hand image detection unit 112 may detect a hand image in another state. For example, an image of a hand with only one or two fingers raised may be detected. In this case, it may be determined that there has been a click operation when the state changes from a state where only one or two fingers are raised to a state where all five fingers are spread out.
- the finger image detection unit 112 specifies the image change area having a large change in pixel value for the past k frames of images, but the frame image 1001 is previously stored as in the second embodiment.
- the image change area may be specified by dividing into a predetermined number and sequentially selecting the divided areas.
- the information terminal can also function as the operation input device 10 according to the present invention.
- Such a program distribution method is arbitrary, for example, a computer-readable recording medium such as a CD-ROM (Compact Disc Read-Only Memory), a DVD (Digital Versatile Disc), an MO (Magneto Optical Disc), a memory card, etc. It may be stored and distributed in the network, or distributed via a communication network such as the Internet.
- a computer-readable recording medium such as a CD-ROM (Compact Disc Read-Only Memory), a DVD (Digital Versatile Disc), an MO (Magneto Optical Disc), a memory card, etc. It may be stored and distributed in the network, or distributed via a communication network such as the Internet.
- Operation input device 11 CPU DESCRIPTION OF SYMBOLS 111 ... Image acquisition part 112 ... Finger image detection part 113 ... Operation area specific
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Abstract
Description
ディスプレイと、
オペレータを撮影するカメラと、
前記カメラが撮影したフレーム画像を取得し、前記フレーム画像から前記オペレータの手又は指を示す手指画像を検出する手指画像検出部と、
前記手指画像検出部が検出した前記手指画像の前記フレーム画像における位置又は大きさに基づいて、前記カメラの視野領域から前記オペレータの操作が有効な操作領域を特定する操作領域特定部と、
前記操作領域特定部が特定した前記操作領域を前記ディスプレイの表示領域にマッピングし、前記操作領域と前記表示領域との座標の対応関係を示すマッピング情報を生成する領域マッピング部と、
前記手指画像検出部が検出した前記手指画像の前記操作領域における座標を、前記マッピング情報を用いて前記表示領域内の座標に変換し、変換された座標における前記手指画像の位置又は大きさ又は形状に基づいて、前記オペレータの操作入力を示す操作入力信号を生成する操作入力信号生成部と、
を備えることを特徴とする。
前記操作入力信号生成部は、前記手指画像検出部が検出した2つの前記手指画像の前記ディスプレイの縦方向の座標が相対的に変化した場合、前記ディスプレイの表示面に垂直なZ軸を中心とする回転、又は、スクロールアップあるいはスクロールダウンする前記操作入力信号を生成するようにしてもよい。
前記操作入力信号生成部は、前記手指画像検出部が検出した2つの前記手指画像の大きさが相対的に変化した場合、前記ディスプレイの縦方向のY軸を中心とする回転、又は、ズームインあるいはズームアウトする前記操作入力信号を生成するようにしてもよい。
カメラ及びディスプレイに接続されたコンピュータが、カメラが撮影したオペレータの手又は指を示す手指画像に基づいて前記オペレータの操作を入力する操作入力方法であって、
前記カメラが撮影したフレーム画像を取得し、前記フレーム画像から前記オペレータの手又は指を示す手指画像を検出する手指画像検出ステップと、
前記手指画像検出ステップで検出した前記手指画像の前記フレーム画像における位置又は大きさに基づいて、前記カメラの視野領域から前記オペレータの操作が有効な操作領域を特定する操作領域特定ステップと、
前記操作領域特定ステップで特定した前記操作領域を前記ディスプレイの表示領域にマッピングし、前記操作領域と前記表示領域との座標の対応関係を示すマッピング情報を生成する領域マッピングステップと、
前記手指画像検出ステップで検出した前記手指画像の前記操作領域における座標を、前記マッピング情報を用いて前記表示領域内の座標に変換し、変換された座標における前記手指画像の位置又は大きさ又は形状に基づいて、前記オペレータの操作入力を示す操作入力信号を生成する操作入力信号生成ステップと、
を有することを特徴とする。
カメラ及びディスプレイに接続されたコンピュータを、
前記カメラが撮影したフレーム画像を取得し、前記フレーム画像からオペレータの手又は指を示す手指画像を検出する手指画像検出部、
前記手指画像検出部が検出した前記手指画像の前記フレーム画像における位置又は大きさに基づいて、前記カメラの視野領域から前記オペレータの操作が有効な操作領域を特定する操作領域特定部、
前記操作領域特定部が特定した前記操作領域を前記ディスプレイの表示領域にマッピングし、前記操作領域と前記表示領域との座標の対応関係を示すマッピング情報を生成する領域マッピング部、
前記手指画像検出部が検出した前記手指画像の前記操作領域における座標を、前記マッピング情報を用いて前記表示領域内の座標に変換し、変換された座標における前記手指画像の位置又は大きさ又は形状に基づいて、前記オペレータの操作入力を示す操作入力信号を生成する操作入力信号生成部、
として機能させることを特徴とする。
本発明の実施の形態1について図面を参照して詳細に説明する。
本発明の実施の形態2について図面を参照して詳細に説明する。
本発明の実施の形態3について図面を参照して詳細に説明する。
本発明の実施の形態4について図面を参照して詳細に説明する。
11…CPU
111…画像取得部
112…手指画像検出部
113…操作領域特定部
114…領域マッピング部
115…操作入力信号生成部
116…アプリケーション実行部
12…カメラ
13…RAM
14…ディスプレイ
15…記憶部
101…手
102…胴体
1001…視野領域
1002,1003…操作領域
1004…ディスプレイ領域
1011,1012…分割領域
2001…アイコン
2002…画像
2003…カーソル
2004…仮想ボタン
Claims (12)
- ディスプレイと、
オペレータを撮影するカメラと、
前記カメラが撮影したフレーム画像を取得し、前記フレーム画像から前記オペレータの手又は指を示す手指画像を検出する手指画像検出部と、
前記手指画像検出部が検出した前記手指画像の前記フレーム画像における位置又は大きさに基づいて、前記カメラの視野領域から前記オペレータの操作が有効な操作領域を特定する操作領域特定部と、
前記操作領域特定部が特定した前記操作領域を前記ディスプレイの表示領域にマッピングし、前記操作領域と前記表示領域との座標の対応関係を示すマッピング情報を生成する領域マッピング部と、
前記手指画像検出部が検出した前記手指画像の前記操作領域における座標を、前記マッピング情報を用いて前記表示領域内の座標に変換し、変換された座標における前記手指画像の位置又は大きさ又は形状に基づいて、前記オペレータの操作入力を示す操作入力信号を生成する操作入力信号生成部と、
を備える操作入力装置。 - 前記操作領域特定部は、連続する複数の前記フレーム画像において画像の変化が予め定めた範囲を超えている領域から前記手指画像が存する領域を前記操作領域として特定する、
請求項1に記載の操作入力装置。 - 前記手指画像検出部は、前記フレーム画像を予め定めた数の分割領域に分割し、前記分割領域を順に探索し、前記手指画像を検出する、
請求項1又は2に記載の操作入力装置。 - 前記手指画像検出部は、前記分割領域内において前記手指画像を検出することができなかったときは、当該分割領域内の画像を拡大又は縮小して前記手指画像を検出する、
請求項3に記載の操作入力装置。 - 前記領域マッピング部は、前記操作領域の中央から前記操作領域の端部に近づくにつれ、前記操作領域に対する前記表示領域の拡大率を高くするようにマッピングし、前記操作領域と前記表示領域との座標の対応関係を示すマッピング情報を生成する、
請求項1乃至4のいずれか1項に記載の操作入力装置。 - 前記領域マッピング部は、凸面上に一定の間隔で配列した点を凸方向から投影した配列の点を前記操作領域に仮想し、前記操作領域に仮想した点と同数の点を前記表示領域内に一定の間隔で配列し、操作領域内に配列した点の座標と前記表示領域内に配列した点の座標とを対応づけたマッピング情報を生成する、
請求項1乃至4のいずれか1項に記載の操作入力装置。 - 前記操作入力信号生成部は、前記マッピング情報を用いて、前記操作領域における前記手指画像の座標を前記ディスプレイの前記表示領域における座標に変換し、変換された前記手指画像の位置にカーソルを表示させる、
請求項1乃至6のいずれか1項に記載の操作入力装置。 - 前記操作入力信号生成部が前記手指画像の位置が変化していることを検出した場合に、前記操作入力信号生成部は前記オペレータの手が移動していることを識別できる態様で前記カーソルを表示し、前記手指画像の形状が所定の変化をしていることを検出した場合に、前記操作入力信号生成部は前記オペレータがクリック操作を行ったことを識別できる態様で前記カーソルを表示する、
請求項7に記載の操作入力装置。 - 前記手指画像検出部は、前記フレーム画像から2つの前記手指画像を検出し、
前記操作入力信号生成部は、前記手指画像検出部が検出した2つの前記手指画像の前記ディスプレイの縦方向の座標が相対的に変化した場合、前記ディスプレイの表示面に垂直なZ軸を中心とする回転、又は、スクロールアップあるいはスクロールダウンする前記操作入力信号を生成する、
請求項1乃至8のいずれか1項に記載の操作入力装置。 - 前記手指画像検出部は、前記フレーム画像から2つの前記手指画像を検出し、
前記操作入力信号生成部は、前記手指画像検出部が検出した2つの前記手指画像の大きさが相対的に変化した場合、前記ディスプレイの縦方向のY軸を中心とする回転、又は、ズームインあるいはズームアウトする前記操作入力信号を生成する、
請求項1乃至9のいずれか1項に記載の操作入力装置。 - カメラ及びディスプレイに接続されたコンピュータが、カメラが撮影したオペレータの手又は指を示す手指画像に基づいて前記オペレータの操作を入力する操作入力方法であって、
前記カメラが撮影したフレーム画像を取得し、前記フレーム画像から前記オペレータの手又は指を示す手指画像を検出する手指画像検出ステップと、
前記手指画像検出ステップで検出した前記手指画像の前記フレーム画像における位置又は大きさに基づいて、前記カメラの視野領域から前記オペレータの操作が有効な操作領域を特定する操作領域特定ステップと、
前記操作領域特定ステップで特定した前記操作領域を前記ディスプレイの表示領域にマッピングし、前記操作領域と前記表示領域との座標の対応関係を示すマッピング情報を生成する領域マッピングステップと、
前記手指画像検出ステップで検出した前記手指画像の前記操作領域における座標を、前記マッピング情報を用いて前記表示領域内の座標に変換し、変換された座標における前記手指画像の位置又は大きさ又は形状に基づいて、前記オペレータの操作入力を示す操作入力信号を生成する操作入力信号生成ステップと、
を有する操作入力方法。 - カメラ及びディスプレイに接続されたコンピュータを、
前記カメラが撮影したフレーム画像を取得し、前記フレーム画像からオペレータの手又は指を示す手指画像を検出する手指画像検出部、
前記手指画像検出部が検出した前記手指画像の前記フレーム画像における位置又は大きさに基づいて、前記カメラの視野領域から前記オペレータの操作が有効な操作領域を特定する操作領域特定部、
前記操作領域特定部が特定した前記操作領域を前記ディスプレイの表示領域にマッピングし、前記操作領域と前記表示領域との座標の対応関係を示すマッピング情報を生成する領域マッピング部、
前記手指画像検出部が検出した前記手指画像の前記操作領域における座標を、前記マッピング情報を用いて前記表示領域内の座標に変換し、変換された座標における前記手指画像の位置又は大きさ又は形状に基づいて、前記オペレータの操作入力を示す操作入力信号を生成する操作入力信号生成部、
として機能させるプログラム。
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US20160370865A1 (en) | 2016-12-22 |
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