CN111067708A - Display method and display system for tactile perception of images - Google Patents
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- CN111067708A CN111067708A CN201911379870.3A CN201911379870A CN111067708A CN 111067708 A CN111067708 A CN 111067708A CN 201911379870 A CN201911379870 A CN 201911379870A CN 111067708 A CN111067708 A CN 111067708A
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- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F9/00—Methods or devices for treatment of the eyes; Devices for putting-in contact lenses; Devices to correct squinting; Apparatus to guide the blind; Protective devices for the eyes, carried on the body or in the hand
- A61F9/08—Devices or methods enabling eye-patients to replace direct visual perception by another kind of perception
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Abstract
The invention provides a display method and a display system for a haptic perception image. The display method comprises the following steps: acquiring an image to be displayed; generating a first display image corresponding to the pixel resolution of the touch display device according to the image to be displayed; the touch display device comprises a plurality of touch display units arranged in an array, wherein each touch display unit is controlled to be switched among a plurality of different physical states, and each different physical state corresponds to a different target color; determining a target color corresponding to each pixel position from multiple preset colors according to the color information of each pixel position of the first display image; and controlling a corresponding touch display unit in the touch display device to act in a touch sensible form according to the target color corresponding to each pixel position, and presenting a physical state corresponding to the target color. The invention realizes color perception by perceiving different physical states through touch sense and has high accuracy.
Description
Technical Field
The invention relates to the technical field of image display, in particular to a display method and a display system for sensing an image by touch.
Background
Because of impaired vision, the blind people can only rely on touch and hearing for sense compensation, and the blind people cannot effectively acquire information in the face of rich and colorful graphic image information. The traditional method is to make a tactile image through paper or describe colors and images through voice, for example, by means of stamping, braille contact printing, thermoplastic and the like, the bulges of the paper are changed according to the meaning of the graph, and the understanding of people to the colors in the picture is described through the form of voice. However, the way of describing colors is a certain human consciousness understanding, color or graphic information cannot be transmitted without loss, the types, image information and content of paper tactile images are limited, and the paper tactile images are not easy to be stored for a long time. Especially in the internet era, the high-speed replacement of color images, artificial help, and the inability of paper touch images to randomly switch and dynamically bear touch color or image information in real time do not provide great convenience for the blind, especially in the pursuit of the art.
Disclosure of Invention
The invention solves the problems that the blind cannot effectively perceive rich colors, cannot provide convenience for daily life, and cannot provide help for the blind in the field of art.
To solve at least one of the above problems, the present invention provides a display method for haptically perceiving an image, comprising:
acquiring an image to be displayed;
generating a first display image corresponding to the pixel resolution of the touch display device according to the image to be displayed; the touch display device comprises a plurality of touch display units arranged in an array, wherein each touch display unit is controlled to be switched among a plurality of different physical states, and each different physical state corresponds to a different target color;
determining a target color corresponding to each pixel position from multiple preset colors according to the color information of each pixel position of the first display image; and
and controlling a corresponding touch display unit in the touch display device to act in a touch sensible form according to the target color corresponding to each pixel position, and presenting a physical state corresponding to the target color.
Preferably, the acquiring the image to be displayed includes:
the method comprises the steps of obtaining a video to be displayed, framing the video to be displayed according to a preset frequency, and extracting an image corresponding to each frame of video to serve as the image to be displayed.
Preferably, before the acquiring the image to be displayed, the method further includes:
controlling all the tactile display units on the tactile display device to return to an initial state, wherein the initial state is as follows: the physical state of all the tactile display units is the same.
Preferably, the determining, according to the color information of each pixel position of the first display image, a target color corresponding to each pixel position from a plurality of preset colors includes:
and calculating the color similarity between the color information of each pixel position of the first display image and each color in the preset multiple colors, and determining a target color corresponding to each pixel position according to the comparison between the color similarity and the preset value.
Compared with the prior art, the display method for the tactile perception image has the following beneficial effects:
(1) the invention realizes the perception of the image color by corresponding different physical states to different colors and perceiving different physical states by touch, provides a display method which is different from the method for perceiving the image color by vision, and provides the possibility of perceiving the image color for the crowd with impaired vision and unable to perceive by vision.
(2) The vision-impaired people can realize the perception of the color of the image by directly touching the touch display unit on the touch display device, the acquisition mode is direct and simple, third parties such as voice description or explanation are not doped, and the information accuracy is high.
The present invention also provides a display system for haptically perceiving an image, comprising:
a tactile display device comprising a plurality of tactile display units arranged in an array, each tactile display unit being controlled to switch between a plurality of different physical states, each different physical state corresponding to a different target color;
display control means for controlling the tactile display means to operate according to the display method for a tactile sensation image as described in any one of the above.
Preferably, the tactile display unit comprises a plurality of display blocks, two or more of the display blocks have different shapes, and each display block corresponds to one physical state of the tactile display unit when being highlighted.
Preferably, the tactile display unit further comprises a driving unit for driving the display block to highlight, and the driving unit is in data connection with the display control device.
Preferably, the display block highlighting includes: the display block protrudes upwards or is sunken downwards.
Preferably, the display block is highlighted by vibration of the display block, increase or decrease in surface temperature of the display block, increase or decrease in surface viscosity of the display block, or increase or decrease in surface roughness of the display block.
Preferably, the display control apparatus includes:
the image conversion module is used for acquiring an image to be displayed and generating a first display image corresponding to the pixel resolution of the touch display device according to the image to be displayed;
the dot matrix control module is used for determining a target color corresponding to each pixel position from multiple preset colors according to the color information of each pixel position of the first display image; and controlling a corresponding touch display unit in the touch display device to act in a touch sensible form according to the target color corresponding to each pixel position, and presenting a physical state corresponding to the target color.
Compared with the prior art, the display system for the tactile sensation image has the same beneficial effects as the display method for the tactile sensation image, and the description is omitted here.
Drawings
FIG. 1 is a flow chart of a display method for haptically perceiving an image according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of a haptic display device of a display system for haptically sensing images according to an embodiment of the invention;
FIG. 3 is an enlarged view taken at point I in FIG. 2;
FIG. 4 is a block diagram of a haptic display unit in an embodiment of the invention;
FIG. 5 is a partial block diagram of a tactile display device of a display system for haptically sensing images according to an embodiment of the invention;
FIG. 6 is an overall block diagram of a tactile display device of the display system for haptically perceiving an image according to the embodiment of the present invention;
FIG. 7 is a state diagram illustrating the use of the display system for haptically sensing images according to an embodiment of the invention;
fig. 8 is a display example diagram of a display system for haptically perceiving an image according to an embodiment of the present invention.
Description of reference numerals:
1-a tactile display device; 2-braille interpretation; 11-a tactile display unit; 111-display block.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below.
Referring to fig. 1, an embodiment of the invention provides a display method for a haptic perception image, including:
acquiring an image to be displayed;
generating a first display image corresponding to the pixel resolution of the touch display device 1 according to the image to be displayed; the touch display device 1 comprises a plurality of touch display units 11 arranged in an array, wherein each touch display unit 11 is controlled to be switched among a plurality of different physical states, and each different physical state corresponds to a different target color;
according to the color information of each pixel position of the first display image, determining a target color corresponding to each pixel position from multiple preset colors; and
and controlling the corresponding touch display unit 11 in the touch display device 1 to act in a touch sensible manner according to the target color corresponding to each pixel position, and presenting a physical state corresponding to the target color.
Because the blind lacks visual perception capability, it becomes very important to acquire information through other senses such as hearing, touch, smell and the like, and the touch is one of important channels for the blind to acquire information. In the display method for the haptic perception image provided by the embodiment, one physical state of the haptic display unit 11 corresponds to one target color, a plurality of physical states correspond to a plurality of different target colors, the display of different target colors is realized by switching the physical state of the haptic display unit 11, and then the haptic display unit 11 acts in a form of haptic perception, and the color perception is realized by utilizing the haptic sense.
In the prior art, most of the ways for helping the blind to perceive the image are to describe the image and the color of the image artificially, the ways are mixed with the understanding and consciousness of other people, the information source has inaccuracy, and the information is lost in the transmission process, so that the information transmission is not accurate enough, for example, the blind can tell which part of a picture is red and which part is blue, the blind can only know about a red area and a blue area, but the blind does not know where the boundary of the color area is, how much the area where the color is located, and the like.
By the display method for the touch perception image, the blind can perceive the color by self, so that the blind can understand the color and feel the color, and even can create the color after having the cognitive understanding of the blind, and compared with the color recognition mode with single output in the prior art, the display method for the touch perception image provides greater convenience for the blind.
The acquired image to be displayed can be a picture or a video, when the video to be displayed is acquired, the video to be displayed is framed according to a preset frequency, and an image corresponding to each frame of video is extracted to serve as the image to be displayed.
Preferably, before acquiring the image to be displayed, the method further includes:
controlling all the tactile display units 11 on the tactile display device 1 to return to the initial state: the physical state of all the tactile display units 11 is the same. Thus, when the corresponding tactile display unit 11 in the tactile display device 1 is operated in a form perceivable by a touch, each tactile display unit 11 in the tactile display device 1 is in a physical state having a difference.
In a preferred mode, determining a target color corresponding to each pixel position from a plurality of preset colors according to color information of each pixel position of the first display image includes: and calculating the color similarity between the color information of each pixel position of the first display image and each color in the preset multiple colors, and determining the target color corresponding to each pixel position according to the comparison between the color similarity and the preset value. It should be understood that the more the kinds of preset colors are, the higher the display precision is, but since the display method for the haptic perception image provided in the present embodiment is mainly used by the visually impaired people, the more the kinds of colors are, the greater the difficulty of perception is, the preferable kinds of colors in the present embodiment are 8-12.
Referring to fig. 2-7, another embodiment of the present invention provides a display system for haptically sensing images, comprising:
the touch display device 1 comprises a plurality of touch display units 11 arranged in an array, wherein each touch display unit 11 is controlled to be switched between a plurality of different physical states, and each different physical state corresponds to a different target color;
and a display control device for controlling the tactile display device 1 to operate according to the display method for tactile perception of the image.
Wherein each different physical state corresponds to a different target color, one embodiment is that the tactile display unit 11 includes a plurality of display blocks 111, two or more display blocks 111 have different shapes, and each display block 111 corresponds to a physical state of the tactile display unit 11 when highlighted.
Preferably, in one specific embodiment, each tactile display unit 11 comprises eleven display blocks 111 with different shapes, that is, each tactile display unit 11 has eleven shapes, and the display block 111 with one shape is highlighted to indicate that the tactile display unit 11 has one physical state, and the one physical state corresponds to one target color. The eleven display blocks 111 represent eleven colors, respectively, as shown in fig. 3 and 4, where a circle represents red, a square represents orange, a triangle represents light green, a minus sign represents blue, a plus sign represents dark green, a crescent represents light blue, a pentagon represents yellow, a rhombus represents purple, a vertical rectangle represents black, a pentagon represents white, and an ellipse represents gray.
Therefore, the blind can remember the corresponding relation between the eleven shapes and the colors easily, the display blocks 111 are prevented from being too many, and the blind can not read easily; meanwhile, the common color can be obtained, and the diversified requirements of the blind on reading the color can be met. It should be understood that two or more shapes of display blocks 111 may also be highlighted to represent a physical state of the tactile display unit 11, which corresponds to a target color, so that more colors can be obtained by combining different shapes, and the display system can display more colors without increasing the number of display blocks 111. For people with impaired vision, the visual sense display device can be set by self according to the proficiency of reading.
The tactile display unit 11 further comprises a driving unit for driving the highlighting of the display block 111, the driving unit being in data connection with the display control means. The manner in which the display block 111 is highlighted includes: the display block 111 protrudes upward or is recessed downward, the display block 111 vibrates, the temperature of the surface of the display block 111 increases or decreases, the viscosity of the surface of the display block 111 increases or decreases, or the roughness of the surface of the display block 111 increases or decreases. It should be understood that the present invention is not limited to the above-described display method.
When the display blocks 111 are displayed in a convex or concave manner, one of the physical states of the tactile display unit 11 is that one of the display blocks 111 is convex or concave upward and the other display blocks 111 are stationary. Accordingly, the driving unit includes a lifting mechanism, preferably, a lifting mechanism is provided in each display block 111, and the lifting mechanism is used to drive the display block 111 to ascend or descend. Therefore, the state of each display block 111 in the touch display unit 11 can be independently set, the surface flatness of the touch display device 1 is changed, and the moved display blocks 111 and the display blocks 111 which are not moved form an uneven picture on the surface of the touch display device 1, so that the blind can sense the touch easily, and the blind can sense the color through the display system.
When the display blocks 111 are displayed in a vibration manner, one of the physical states of the tactile display unit 11 is that one of the display blocks 111 generates a vibration and the other display blocks 111 are stationary. Accordingly, the driving unit includes a vibrator, preferably, provided at the bottom of each display block 111, for driving the display block 111 to vibrate. It should be understood that the intensity of the vibration of the display block 111 should be an intensity that can be perceived using an object. Thereby, what shape of the display block 111 on the tactile display unit 11 is highlighted is acquired by using the sense of vibration felt by the subject, and the corresponding color is acquired.
When the display blocks 111 are displayed in such a manner that the surface temperature increases or decreases, one of the physical states of the tactile display unit 11 is that the surface temperature of one of the display blocks 111 increases or decreases compared to the surface temperatures of the other display blocks 111. Therefore, by touching the display block 111 with the sensed change in temperature, the shape of the display block 111 is obtained, and the corresponding color is obtained.
When the display blocks 111 are displayed in such a manner that the surface viscosity increases or decreases, one of the physical states of the tactile display unit 11 is that the surface viscosity of one of the display blocks 111 increases or decreases compared to the surface viscosity of the other display blocks 111. Thus, by acquiring the shape of the display block 111 having a larger or smaller surface viscosity, the corresponding color is acquired.
When the display blocks 111 are displayed in such a manner that the surface roughness is increased or decreased, one of the physical states of the tactile display unit 11 is that the surface roughness of one shape of the display block 111 is increased or decreased compared to the surface roughness of the other display blocks 111. Thus, by acquiring the shape of the display block 111 whose surface is rough or smooth, the corresponding color is acquired.
Furthermore, the display system for the touch perception image further comprises an upper computer, the upper computer is in data connection with the display control device, and the upper computer is used for playing the image to be displayed.
Wherein, the display control device includes: the image conversion module is used for acquiring an image to be displayed and generating a first display image corresponding to the pixel resolution of the touch display device according to the image to be displayed; and acquiring each pixel position of the first display image and color information of each pixel position.
The dot matrix control module is used for determining a target color corresponding to each pixel position from a plurality of preset colors according to the color information of each pixel position of the first display image; the method specifically comprises the following steps: and calculating the color similarity of the color information of each pixel position of the first display image and each of preset eleven colors, and determining a target color corresponding to each pixel position from the preset eleven colors according to the comparison of the color similarity and the preset value.
The dot matrix control module is also used for controlling the corresponding touch display unit in the touch display device to act in a touch sensible mode according to the target color corresponding to each pixel position, and presenting a physical state corresponding to the target color.
When the upper computer changes the playing image, the image conversion module of the display control device receives the image transmitted by the upper computer again. Therefore, the switching of the pictures can be realized, and the corresponding switching speed is set according to the touch reading speed of the blind, so that the blind can touch and read the colors in the dynamic pictures and even watch movies. Compared with the mode of displaying images by using different skin types or different textures in the prior art, the display system for sensing the images by the touch sense provided by the embodiment can be used for sensing the colors in the dynamic picture, so that the blind can feel more picture colors, and convenience is brought to the life of the blind.
As shown in fig. 7, for example, when the upper computer plays the ironmen image, the image conversion module of the display control device generates a first ironmen image corresponding to the pixel resolution of the tactile display device 1 according to the ironmen image, and determines a target color corresponding to each pixel position from eleven preset colors according to the color information of each pixel position of the first ironmen image. The dot matrix control module of the display control device controls the corresponding touch sensation display unit 11 in the touch sensation display device 1 to lift the display block 111 with the corresponding shape according to the target color corresponding to each pixel position, and the display blocks 111 with other shapes in the touch sensation display unit 11 are kept flat, so that a group of uneven patterns are obtained on the display screen of the touch sensation display device 1, and the blind can sense the color, such as a circle, by touching, i.e. the blind can sense the position corresponding to red. It should be understood that the blind knows in advance the color represented by each shape. A braille explanation 2 is provided on the display screen side of the tactile display device 1.
Optionally, the lifting mechanism is disposed at the bottom of the display block 111, the lifting mechanism has two states, namely a high state after moving upwards or downwards and a low state at the original position, when the lifting mechanism is in the high state, the display block 111 rises or falls under the pushing action of the lifting mechanism, in this embodiment, preferably, when the lifting mechanism is in the high state, the display block 111 rises and protrudes out of other display blocks 111, so that the display block is more easily touched by the blind. When the lifting mechanism is in the low position, the display blocks 111 are in the initial position, and when all the display blocks 111 are in the initial position, the surface of the tactile display device 1 is a plane. Since the display blocks 111 of different shapes represent different colors, the blind reads the graphic colors of the image by touch.
Because the touch reading speed of each blind person is different, and the touch reading speed of the same blind person is faster and faster along with continuous training and learning, the display system for the touch perception image provided by the embodiment has the autonomous learning and self-adaptive capabilities, the time required by the blind person to read one image is acquired according to the touch reading speed of the blind person, the display control device acquires the image reading time and sets the preset time, and the display control device automatically reacquires the image displayed in the upper computer after the preset time. The acquisition of the time for the blind to read the picture can be completed according to the expression record of the blind in the test process.
It should be understood that the display control device can also automatically adjust the time for switching the images by the upper computer according to the reading time of the blind person, so that the images switched by the upper computer are adapted to the images acquired again by the color playing control system. Along with the difference of the blind person touch reading speed, the display control device automatically adjusts the preset time to be suitable for the blind person touch reading speed.
Further, the display system for tactilely perceiving an image also has a reset function, and the display control means sends a reset instruction to the tactilely displaying means 1 to control all the display blocks 111 in the tactilely displaying means 1 to be reset before the display control means reacquires an image.
Although the present disclosure has been described above, the scope of the present disclosure is not limited thereto. Various changes and modifications may be effected therein by one of ordinary skill in the pertinent art without departing from the spirit and scope of the present disclosure, and these changes and modifications are intended to be within the scope of the present disclosure.
Claims (10)
1. A display method for haptically perceiving an image, comprising:
acquiring an image to be displayed;
generating a first display image corresponding to the pixel resolution of the touch display device according to the image to be displayed; the touch display device comprises a plurality of touch display units arranged in an array, wherein each touch display unit is controlled to be switched among a plurality of different physical states, and each different physical state corresponds to a different target color;
determining a target color corresponding to each pixel position from multiple preset colors according to the color information of each pixel position of the first display image; and
and controlling a corresponding touch display unit in the touch display device to act in a touch sensible form according to the target color corresponding to each pixel position, and presenting a physical state corresponding to the target color.
2. The display method for haptically perceiving the image according to claim 1, wherein the acquiring the image to be displayed comprises:
the method comprises the steps of obtaining a video to be displayed, framing the video to be displayed according to a preset frequency, and extracting an image corresponding to each frame of video to serve as the image to be displayed.
3. The method of claim 1, wherein prior to obtaining the image to be displayed, further comprising:
controlling all the tactile display units on the tactile display device to return to an initial state, wherein the initial state is as follows: the physical state of all the tactile display units is the same.
4. The method according to claim 1, wherein the determining a target color corresponding to each pixel position from a plurality of preset colors according to the color information of each pixel position of the first display image comprises:
and calculating the color similarity between the color information of each pixel position of the first display image and each color in the preset multiple colors, and determining a target color corresponding to each pixel position according to the comparison between the color similarity and the preset value.
5. A display system for haptically perceiving an image, comprising:
a tactile display device comprising a plurality of tactile display units arranged in an array, each tactile display unit being controlled to switch between a plurality of different physical states, each different physical state corresponding to a different target color;
display control means for controlling the tactile display means to perform an action according to the display method for a tactile sensation image according to any one of claims 1 to 4.
6. The display system for haptically sensing images according to claim 5,
the touch display unit comprises a plurality of display blocks, the shapes of two or more display blocks are different, and each display block corresponds to one physical state of the touch display unit when being highlighted.
7. A display system for haptically perceiving images according to claim 6, wherein said haptic display unit further comprises a driving unit for driving the display block to be highlighted, said driving unit being in data connection with said display control means.
8. The display system for haptically perceiving images as recited in claim 7, wherein said display block highlighting comprises: the display block protrudes upwards or is sunken downwards.
9. The display system for haptically perceiving images as claimed in claim 7, wherein the display block is highlighted as vibration of the display block, an increase or decrease in the temperature of the surface of the display block, an increase or decrease in the viscosity of the surface of the display block, or an increase or decrease in the roughness of the surface of the display block.
10. The display system for haptically sensing images according to claim 5, wherein the display control means comprises:
the image conversion module is used for acquiring an image to be displayed and generating a first display image corresponding to the pixel resolution of the touch display device according to the image to be displayed;
the dot matrix control module is used for determining a target color corresponding to each pixel position from multiple preset colors according to the color information of each pixel position of the first display image; and controlling a corresponding touch display unit in the touch display device to act in a touch sensible form according to the target color corresponding to each pixel position, and presenting a physical state corresponding to the target color.
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| CN114708772A (en) * | 2022-03-29 | 2022-07-05 | 南京点明软件科技有限公司 | Information acquisition system applied to blind people |
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| CN204440746U (en) * | 2015-03-11 | 2015-07-01 | 哈尔滨理工大学 | The contact jacking gear of Braille point word display |
| CN104882090A (en) * | 2015-05-26 | 2015-09-02 | 浙江大学 | Blind-person tactile image realization apparatus and method |
| CN106846991A (en) * | 2017-03-30 | 2017-06-13 | 安庆师范大学 | A kind of touch braille and graphics device |
| CN110231865A (en) * | 2019-05-17 | 2019-09-13 | 瑞声科技(新加坡)有限公司 | Tactile feedback method, electronic equipment and storage medium |
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| CN113342213A (en) * | 2021-08-09 | 2021-09-03 | 南昌龙旗信息技术有限公司 | Information transfer method, information transfer apparatus, information transfer device, information transfer medium, and program product |
| CN114708772A (en) * | 2022-03-29 | 2022-07-05 | 南京点明软件科技有限公司 | Information acquisition system applied to blind people |
| CN114708772B (en) * | 2022-03-29 | 2024-06-14 | 南京点明软件科技有限公司 | Information acquisition system applied to blind person |
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