KR101746538B1 - System and method for processing stereo image, and liquid crystal glasses - Google Patents

Abstract

A stereoscopic image processing system, a stereoscopic image processing method, and a liquid crystalglass according to the present invention are disclosed. The stereoscopic image processing system transmits a control value for adjusting a prism diopter of a spectacle having a prism effect to the illuminated light to display a left eye view image and a right eye view image, and transmits the control value to the prism diopter And generates a prism effect in the light transmitted through the glasses.

Description

TECHNICAL FIELD [0001] The present invention relates to a stereoscopic image processing system, a stereoscopic image processing method,

The present invention relates to a stereoscopic image processing system, a stereoscopic image processing method, and a liquid crystalglass. More particularly, the present invention relates to a stereoscopic image processing system, a stereoscopic image processing method, and a liquid crystalglass.

Currently, the broadcasting environment is rapidly changing from analog broadcasting to digital broadcasting. Accordingly, the amount of contents for digital broadcasting is rapidly increasing. In addition to the content for displaying a 2-dimensional (2D) video signal as a 2-dimensional image, contents for displaying 3-dimensional (3D) It is planned.

The technique of displaying a three-dimensional image is based on the principle of binocular parallax that the observer perceives a stereoscopic effect in the binocular parallax, and is classified into a shutter glass method, an eyeglass method, and a full three-dimensional method. The glasses system refers to a system in which viewers wear glasses having a special function to view a stereoscopic image. It is possible to classify the spectacles into a polarizing mode in which the shutter glasses are alternately opened and closed alternately and the circular polarizing plates in opposite directions are mounted on the left and right spectacle lens portions.

According to an aspect of the present invention, there is provided a stereoscopic image processing system, a stereoscopic image processing method, and a liquid crystal glasses for reducing a human factor generated while viewing a stereoscopic image.

According to another aspect of the present invention, there is provided a stereoscopic image processing method comprising: transmitting a control value for adjusting a prism diopter of a spectacle having a prism effect on light irradiated to display a left eye view image and a right eye view image, Adjusting a prism diopter of the spectacles based on the transmitted control value, and generating a prism effect on the light transmitted through the spectacles. Here, the control value may be one of a Depth value, a prism diopter, and a voltage value of a stereoscopic image represented by the left eye view image and the right eye view image.

The step of adjusting the prism diopter of the spectacles may include calculating a prism diopter using the depth value and the distance between both eyes, and setting the prism diopter of the spectacles to the calculated prism diopter.

The setting step may include calculating a voltage value to be applied to the liquid crystal pixel of the eyeglass based on the calculated prism diopter and applying a voltage to the liquid crystal pixel of the eyeglass according to the calculated voltage value .

Wherein the step of calculating the prism diopter includes calculating a prism diopter based on a value calculated by dividing the distance between both eyes by the principal point distance calculated using the distance and the depth value and a difference between the values calculated by dividing the distance between the eyes by the distance And calculating the prism diopter.

The stereoscopic image processing method may further include calculating the control value using a Depth value of the stereoscopic image represented by the left eye view image and the right eye view image and a distance between the eyes.

The step of adjusting the prism diopter of the spectacles may include calculating a voltage value based on the transmitted control value and applying a voltage to the liquid crystal pixel of the spectacle in accordance with the calculated voltage value .

The step of adjusting the prism diopter of the spectacles may include applying a voltage to the liquid crystal pixels of the spectacles according to the transmitted control value.

According to another aspect of the present invention, there is provided a liquid crystal eyeglass comprising: a receiver for receiving a control value for adjusting a prism diopter of the liquid crystalglass; a prism diopter of the liquid crystalglass on the basis of the transmitted control value; And a liquid crystal panel irradiated to display a left eye view image and a right eye view image according to the adjusted prism diopter and to generate a prism effect on the light incident on the glasses. Here, the control value may be one of a Depth value, a prism diopter, and a voltage value of a stereoscopic image represented by the left eye view image and the right eye view image.

The controller may calculate the prism diopter using the depth value and the distance between both eyes and control the prism diopter of the liquid crystalglass to be set to the calculated prism diopter.

Wherein the control unit calculates the prism diopter based on a value calculated by dividing the distance between the eyes by the principal point distance calculated using the visual distance and the depth value and a difference between the values calculated by dividing the distance between the eyes by the visual distance can do.

The control unit may calculate a voltage value to be applied to the liquid crystal pixel of the liquid crystal panel based on the calculated prism diopter and control application of the voltage to the liquid crystal pixel according to the calculated voltage value.

According to another aspect of the present invention, there is provided a stereoscopic image processing system including a stereoscopic image processing apparatus, a stereoscopic image processing method, and a stereoscopic image processing method, And a spectacle that adjusts its prism diopter based on the transmitted control value and generates a prism effect on the light transmitted through the prism diopter. Here, the control value may be a depth value of a stereoscopic image represented by the left eye view image and the right eye view image.

The eyeglass can calculate the prism diopter using the depth value and the distance between both eyes, and set the prism diopter of the glasses to the calculated prism diopter.

The control value may be one of a prism diopter and a voltage value. Here, the stereoscopic image processing system may further include a controller for calculating the prism diopter using the depth value of the stereoscopic image represented by the left eye view image and the right eye view image, and the distance between the eyes.

Wherein the control unit calculates the prism diopter based on a value calculated by dividing the distance between the eyes by the principal point distance calculated using the visual distance and the depth value and a difference between the values calculated by dividing the distance between the eyes by the visual distance can do.

The controller may further calculate a voltage value of a voltage to be applied to the liquid crystal pixel of the eyeglass based on the calculated prism diopter.

According to the stereoscopic image processing system, the stereoscopic image processing method, and the liquid crystalglass according to the present invention, a proper voltage is applied to a liquid crystal pixel according to an image to be displayed to change the size of the prism effect, It can reduce the appearance of eyes and brain fatigue.

1 is a block diagram showing a configuration of a preferred embodiment of a stereoscopic image display system according to the present invention.
2 is a block diagram showing a configuration of a preferred embodiment of a stereoscopic image processing apparatus according to the present invention.
3 is a block diagram showing the configuration of a preferred embodiment of the liquid crystal glasses according to the present invention.
4 is a diagram illustrating a process of changing a path of light incident on a liquid crystal panel according to an embodiment of the present invention.
5 is a view showing a path of light passing through a prism,
FIG. 6 is a view showing the original appearance when there is no prism effect,
FIGS. 7A to 7C are diagrams showing a state in which a prism effect occurs in the state shown in FIG. 6,
8 is a view showing another embodiment of a process of changing the path of light incident on the liquid crystal panel according to the present invention,
9 is a view for explaining the operation of the stereoscopic image processing system according to the present invention,
10 is a view for explaining a congestion operation and an estimation operation when viewing a long distance and a short distance,
11 is a diagram illustrating a process of performing a stereoscopic image processing method according to an exemplary embodiment of the present invention,
12 is a flowchart illustrating a method of driving a spectacle lens according to an exemplary embodiment of the present invention.
FIG. 13 is a flowchart illustrating a method of performing a stereoscopic image processing method according to another exemplary embodiment of the present invention.
FIG. 14 is a flowchart illustrating a method of driving a spectacle according to another preferred embodiment of the present invention,
FIG. 15 is a flowchart illustrating a method of driving a spectacle lens according to another embodiment of the present invention. Referring to FIG.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings. The structure and operation of the present invention shown in the drawings and described by the drawings are described as at least one embodiment, and the technical ideas and the core structure and operation of the present invention are not limited thereby.

Although the terms used in the present invention have been selected in consideration of the functions of the present invention, it is possible to use general terms that are currently widely used, but this may vary depending on the intention or custom of a person skilled in the art or the emergence of new technology. Also, in certain cases, there may be a term selected arbitrarily by the applicant, in which case the meaning thereof will be described in detail in the description of the corresponding invention. Therefore, it is to be understood that the term used in the present invention should be defined based on the meaning of the term rather than the name of the term, and on the contents of the present invention throughout.

1 is a block diagram showing a configuration of a preferred embodiment of a stereoscopic image display system according to the present invention.

Referring to FIG. 1, the stereoscopic image processing system 100 may include a stereoscopic image processing apparatus 110, glasses 120, and a display 130. The stereoscopic image processing system 100 may be a personal computer system such as a desktop, laptop, tablet or handheld computer. The stereoscopic image processing system 100 may be a mobile terminal such as a mobile phone, a smart phone, a digital broadcasting terminal, a PDA (Personal Digital Assistants), a PMP (Portable Multimedia Player), a navigation system, Device.

 The stereoscopic image processing apparatus 110 and the display 130 may be manufactured and sold as a single product and the stereoscopic image processing apparatus 110 and the display 130 may be manufactured and sold as individual products.

The stereoscopic image processing apparatus 110 may be a multimedia device capable of reproducing multimedia data stored in a storage medium and may be a broadcast receiver capable of receiving a broadcast signal and decoding multimedia data included in the received broadcast signal . Here, the multimedia data may include a stereoscopic image as well as a two-dimensional image. In addition, the stereoscopic image may be a multi-view image. The multi-view image refers to a plurality of images obtained by photographing the same object with a plurality of cameras having a certain distance or angle, and defines images obtained by the cameras as view images.

The broadcast receiver may be a broadcast receiver that can receive a broadcast signal transmitted through a terrestrial wave, a satellite, a cable, and the Internet. Also, the broadcast receiver may be a broadcast receiver capable of providing an Internet service to a viewer. Here, the Internet service includes communication services such as information services such as CoD (content's on demand) service, YouTube service, weather, news, local information and search, entertainment services such as games and karaoke, TV mail and TV SMS And the like can be provided through the Internet. Accordingly, the broadcast receiver in the present invention may include a network TV, a web TV, and a broadband TV.

The broadcast receiver may be a smart TV capable of receiving an application from a server via a network, and installing and executing the application.

The stereoscopic image processing apparatus 110 may calculate a control value for adjusting a prism diopter of a spectacle having a prism effect on the illuminated light for displaying a stereoscopic image, and may transmit the calculated control value to the glasses 120. Here, the control value may be one of a depth value of a stereoscopic image, a prism diopter, and a voltage value. The voltage value may indicate the magnitude of the voltage to be applied to the liquid crystal pixel of the glasses 120. In addition, the stereoscopic image processing apparatus 110 may transmit a sync signal, which is a signal for synchronizing the operation of the eyeglass shutter, to the glasses 120 at the time when the left eye view image and the right eye view image are displayed.

The glasses 120 receive the control values transmitted from the stereoscopic image processing apparatus 110 and adjust the prism diopter of the glasses 120 based on the received control values. The prism effect is generated in the light transmitted through the glasses according to the adjusted prism diopter. Accordingly, the viewer can see the actual screen in a direction in which the stereoscopic image perceived by the brain is located. Thus, the present invention can drastically hide the visual fatigue phenomenon caused by the mismatch of the congestion angle when viewing the stereoscopic image.

In addition, the glasses 120 may be shutter glasses, or may be polarized glasses. In the case of the shutter glasses, the glasses 120 can receive the synchronization signal transmitted from the stereoscopic image processing apparatus 110 and control the opening and closing of the shutter in accordance with the received synchronization signal.

The glasses 120 may be liquid crystal glasses having a diopter using an electro-optic effect of a liquid crystal.

The display 130 displays a stereoscopic image under the control of the stereoscopic image processing apparatus 110. The display 130 may be a shutter glass type display or a polarization type display. That is, the display 130 can alternately display the left-eye view image and the right-eye view image in a shutter glass manner. In addition, the display 130 can display the pixel position of the left eye view image and the pixel position of the right eye view image at different positions so as to be polarized by the polarizing glasses. The display 130 may be implemented as an independent product, and may be integrated with the stereoscopic image processing apparatus 110.

2 is a block diagram showing a configuration of a preferred embodiment of a stereoscopic image processing apparatus according to the present invention.

2, a stereoscopic image processing apparatus 110 according to the present invention includes a tuner unit 205, a demodulator 210, a demultiplexer 215, a network interface 220, an external signal input unit 225, A video decoder 230, an audio decoder 235, a control unit 240, a storage unit 245, a scaler 250, a mixer 260, and a formatter 270.

The tuner unit 205 selects an RF broadcast signal corresponding to a channel selected by a user from among RF (Radio Frequency) broadcast signals received through an antenna, and outputs the selected RF broadcast signal as an intermediate frequency signal, Conversion. The tuner unit 205 can receive an RF broadcast signal of a single carrier according to an Advanced Television System Committee (ATSC) scheme or an RF broadcast signal of a plurality of carriers according to a DVB (Digital Video Broadcasting) scheme.

According to another embodiment of the present invention, the stereoscopic image processing apparatus 110 may include at least two tuner units. In a case where at least two tuner units are provided, the second tuner unit selects an RF broadcast signal corresponding to a channel selected by the user among the RF broadcast signals received through the antenna, similar to the first tuner unit, Frequency signal or a baseband image or voice signal.

In addition, the second tuner unit may sequentially select RF broadcast signals of all broadcast channels stored through the channel memory function among the received RF broadcast signals, and convert the RF broadcast signals into an intermediate frequency signal, a baseband image, or a voice signal. And the second tuner unit may periodically perform the conversion operation of all the broadcast channels. Accordingly, the stereoscopic image processing apparatus 110 can display images of the broadcast signals converted through the first tuner unit, and can provide images of the plurality of channels converted through the second tuner unit in a thumbnail format. In this case, the first tuner unit converts a main RF broadcast signal selected by the user into an intermediate frequency signal, a baseband image or a voice signal, and the second tuner sequentially / periodically selects all RF broadcast signals except for the main RF broadcast signal It can be converted into an intermediate frequency signal or a baseband image or a voice signal.

The demodulation unit 210 receives the digital IF signal DIF converted by the tuner unit 205 and performs a demodulation operation. For example, when the digital IF signal output from the tuner unit 205 is of the ATSC scheme, the demodulation unit 210 performs 8-VSB (2-Vestigial Side Band) demodulation. As another example, when the digital IF signal output from the tuner unit 205 is a DVB scheme, the demodulator 210 performs COFDMA (Coded Orthogonal Frequency Division Modulation) demodulation.

Also, the demodulator 210 may perform channel decoding. For this, the demodulator 210 includes a Trellis decoder, a de-interleaver, and a Reed Solomon decoder to perform trellis decoding, deinterleaving, Solomon decoding can be performed.

The demodulation unit 210 may perform demodulation and channel decoding and then output a stream signal TS. At this time, the stream signal may be a signal in which a video signal, a voice signal, or a data signal is multiplexed. For example, the stream signal may be an MPEG-2 TS (Transport Stream) multiplexed with an MPEG-2 standard video signal, a Dolby AC-3 standard audio signal, or the like. Specifically, the MPEG-2 TS may include a header of 4 bytes and a payload of 184 bytes.

The demultiplexer 215 can receive a stream signal from the demodulator 210, the network interface 220, and the external signal input 225. The demultiplexer 215 demultiplexes the received stream signal into a video signal, a voice signal and a data signal, and outputs the demultiplexed video signal, the audio signal and the data signal to the video decoder 230, the audio decoder 235 and the control unit 240, respectively.

The video decoder 230 receives the video signal from the demultiplexer 215, restores the received video signal, and outputs the restored video signal to the scaler 250. Herein, the image signal may include a stereoscopic image signal.

The audio decoder 235 receives the video signal from the demultiplexer 215, restores the received video signal, and outputs the audio to the display 130 or the scaler 250.

The network interface unit 220 receives packets received from the network and transmits the packets to the network. That is, the network interface unit 220 receives an IP packet for transmitting broadcast data from a service providing server through a network. Here, the broadcast data includes content, an update message indicating whether content is updated, metadata, service information data, and software code. In addition, the service information may include service information for a real-time broadcast service and service information for an Internet service.

When the IP packet includes a stream signal, the network interface unit 220 may extract the stream signal from the IP packet and output the extracted stream signal to the demultiplexer 215. [

The external signal input unit 225 may provide an interface for connecting the external device to the stereoscopic image processing apparatus 110. Here, the external device refers to various types of video or audio output devices such as a DVD (Digital Versatile Disk), a Blu-ray, a game device, a camcorder, and a computer (notebook). The stereoscopic image processing apparatus 110 can control the display of the video signal and the voice signal received from the external signal input unit 225 and can store or use the data signal.

The control unit 240 executes an instruction and performs an operation associated with the stereoscopic image processing apparatus 110. For example, using the command retrieved from the storage unit 245, the control unit 240 can control input and output between the components of the stereoscopic image processing apparatus 110, and reception and processing of data. The control unit 240 may be implemented on a single chip, multiple chips, or multiple electrical components. For example, various architectures may be used for the controller 240, including a dedicated or embedded processor, a single purpose processor, a controller, an ASIC, and so on. The control unit 240 may also include at least one process.

The control unit 240 executes the computer code together with the operating system and generates and uses data. The operating system is generally known and will not be described in more detail. By way of example, the operating system may be a Windows-based OS, Unix, Linux, Palm OS, DOS, Android and Macintosh. The operating system, other computer code, and data may reside within the storage 245 operating in conjunction with the control 240.

The storage unit 245 generally provides a place for storing the program codes and data used by the stereoscopic image processing apparatus 110. [ By way of example, the storage unit 245 may be implemented as a read only memory (ROM), a random access memory (RAM), a hard disk drive, or the like. The program code and data may reside on a removable storage medium and may be loaded or installed onto the stereoscopic image processing apparatus 110 when needed. Here, the removable storage medium includes a CD-ROM, a PC-CARD, a memory card, a floppy disk, a magnetic tape, and a network component.

The scaler 250 scales the signal processed by the video decoder 230 and the audio decoder 235 into a signal of a proper size for output through the display 130 or the speaker (not shown). In particular, the scaler 250 receives the stereoscopic image and scales it to fit the resolution or a predetermined aspect ratio of the display 130. The display 130 may be manufactured to output an image screen having a predetermined resolution, for example, 720x480 format, 1024x768, etc., according to product specifications. Accordingly, the scaler 250 can convert the resolution of the stereoscopic image, which can be input with various values, according to the resolution of the display.

In addition, the scaler 250 adjusts the aspect ratio of the stereoscopic image according to the kind of the content to be displayed or a user setting. The aspect ratio may be a value such as 16: 9, 4: 3, or 3: 2, and the scaler 250 may adjust the screen length ratio in the horizontal direction and the screen length ratio in the vertical direction to be a specific ratio.

The scaler 250 may include a main screen scaler (not shown) and a sub-screen scaler (not shown). The main screen scaler (not shown) can scale any one of a left view image or a right eye view image of a main screen or a stereoscopic image signal. The sub-screen scaler (not shown) may scale other images of the left eye view image or the right eye view image of the sub-screen or the stereoscopic image signal.

The scaler 250 may also apply image quality settings (e.g., color, sharpness, etc.) applied to display a stereoscopic image to the left and right images according to the stereoscopic image signal, respectively . Here, the image quality setting value may be specifically adjusted or set by the control unit 240, and the scaler 250 may control the image quality setting value according to the control of the control unit 240, Respectively. Also, the operation of applying the predetermined image quality setting value to the left and right images according to the stereoscopic image signal to be displayed and outputting may be performed in the formatter 270, not the scaler 250. [

The mixer 260 mixes and outputs the outputs of the scaler 250 and the controller 240.

A formatter 270 converts the video and audio signals output from the mixer 260 into an output format of the display 130. In this case, when the 2D image is displayed, the formatter 270 passes the input signal without performing the conversion function. In the case of displaying a stereoscopic image, the stereoscopic image can be operated as a 3D formatter that processes the stereoscopic image according to the format of the stereoscopic image and the output frequency of the display 130 according to the control of the controller 240.

The formatter 270 may output the converted image signal to the display 130 in order to implement the stereoscopic image, and may generate a synchronous signal related to the stereoscopic image signal to be output to the glasses 120 . The formatter 270 may include an infrared ray output unit (not shown) for transmitting a synchronization signal. Here, the synchronizing signal is a signal for synchronizing the display time of the left eye view image or the right eye view image according to the stereoscopic image signal with the opening / closing time of the left eye lens or the right eye lens of the shutter glasses 120.

The infrared ray output unit (not shown) transmits the synchronization signal generated by the formatter 270 to the glasses 120.

The formatter 270 may also transmit a control value for adjusting the prism diopter of the glasses 120. Here, the control value may be a Depth value of the stereoscopic image represented by the left eye view image and the right eye view image, or may be a prism diopter or a voltage value.

3 is a block diagram showing the configuration of a preferred embodiment of the liquid crystal glasses according to the present invention.

3, the eyeglasses 120 may include a receiving unit 310, a control unit 320, and a liquid crystal panel 330.

The receiving unit 310 may receive a control value and a synchronization signal for adjusting the prism diopter of the spectacles 120. Here, the control value may be a Depth value of a stereoscopic image displayed as a left eye view image and a right eye view image, or may be a prism diopter or a voltage value. The synchronization signal may be a signal for synchronizing the display time of the left eye view image or the right eye view image according to the stereoscopic image signal and the opening / closing time of the left eye lens or the right eye lens of the eyeglasses 120.

The control unit 320 can control the shutter open period of the left eye shutter liquid crystal panel (left eye lens) and the right eye shutter liquid crystal panel (right eye lens) according to the received synchronization signal. Specifically, when the display 130 displays the left-eye view image, the left-eye shutter liquid crystal panel transmits light and the right-eye shutter liquid crystal panel blocks light transmission. Accordingly, the left eye view image is transmitted only to the left eye of the eyeglass user. When the display 130 displays the right eye view image, the left eye shutter liquid crystal panel blocks light transmission and the right eye shutter liquid crystal panel allows light to pass through. Accordingly, the right eye view image is transmitted only to the right eye of the user.

The control unit 320 may calculate the prism diopter using the depth value received by the receiving unit 310 and the distance between both eyes. Herein, the prism diopter can be calculated on the basis of the difference between the value calculated by dividing the distance between the binocular eyes by the principal point distance calculated using the distance and the depth value, and the distance calculated by dividing the distance between the eyes by the distance.

Further, the controller 320 may calculate the voltage value to be applied to the liquid crystal pixels of the glasses based on the calculated prism diopter. The control unit 320 can control the application of the voltage to the liquid crystal pixel of the eyeglasses according to the calculated voltage value.

The liquid crystal panel 330 may include a plurality of liquid crystal pixels. The liquid crystal panel 330 may have a different refracting power depending on the magnitude of the voltage applied to the liquid crystal pixel, and may have a prism effect.

4 is a view illustrating an example of a process of changing the path of light incident on the liquid crystal panel according to the present invention.

Referring to FIG. 4, if different voltages are applied to the liquid crystal pixels included in the liquid crystal panel 410, light can be refracted differently for each liquid crystal pixel by the electro-optic effect. The light rays 430 passing through the respective liquid crystal pixels can be adjusted so as to converge on one focal point 440 by appropriately adjusting the external voltage applied to each liquid crystal pixel, Lens function can be performed. Accordingly, the present invention has an effect that the diopter of the eyeglasses can be variably controlled by appropriately adjusting the voltage applied to the liquid crystal pixel.

5 is a view showing the path of light that has passed through the prism.

5, the light 511 incident on the prism 501 is refracted in the base direction (thick side), and the light 512 passing through the prism 501 along the path 512 is again refracted And is incident on the eye 530 through the path 513. Accordingly, when an object located at the point 510 is viewed through the prism 501 while the eye is located at the point 530, the direction of the principal line of sight changes to the positive direction of the prism (the pointed side). The change of the principal line through this prism is called a prism effect. That is, the prism effect allows the eye 530 to see an object located at point 510 in the direction of the principal line of sight of the object located at point 520.

FIG. 6 is a view showing an original appearance when there is no prism effect, and FIGS. 7A to 7C are views showing a state in which a prism effect occurs in the state shown in FIG.

6 and 7A-7C, when there is no prism effect, the image 600 is shown. The image seen through the prism, that is, the image seen through the light generated by the prism effect, is deflected (biased) toward the positive direction of the prism, such as image 710, image 720 and image 730.

8 is a view showing another embodiment of a process of changing the path of light incident on the liquid crystal panel according to the present invention.

Referring to FIG. 8, the controller 320 may control the voltage application to the liquid crystal pixel of the liquid crystal panel 330 to operate as the liquid crystal panel 850. The liquid crystal panel 850 causes the light rays 880 passing through the liquid crystal panel 850 to converge on a focal point 870 located at a position where the light rays 880 are deviated from the optical axis 860. When the focus of the lens or liquid crystal panel having such a refractive power does not coincide with the direction of the optical axis or the eyeball of the lens and deviates with a certain angle, the lens or the liquid crystal panel has a prism effect.

The liquid crystal panel 330 may be positioned such that the focus 440 may be positioned on the optical axis 420 like the liquid crystal panel 430 according to the voltage applied to the liquid crystal pixel and the focus 870 may be positioned on the optical axis 420, 860). That is, when a 2D image is displayed, a voltage is applied to operate as the liquid crystal panel 430, so that the liquid crystal panel 330 can perform the function of a general lens. When a stereoscopic image is displayed, a voltage is applied to operate as the liquid crystal panel 850, so that the liquid crystal panel 330 can perform the function of a lens having a prism effect. Accordingly, the liquid crystalglass according to the present invention allows the user to continue wearing glasses without inconvenience even when the stereoscopic image and the 2D image are switched between.

9 is a view for explaining the operation of the stereoscopic image processing system according to the present invention.

9, display 130 emits light 911 to display a left eye view image and emits light 912 to display a right eye view image. The emitted light 911 for displaying the left eye view image is incident on the left eye liquid crystal panel 121 along the path 951. The incident light 951 passes through the left eye liquid crystal panel 121 along the path 952 and the light 952 that has passed through the left eye liquid crystal panel 121 enters the left eye 921 along the path 953 . In other words, the left-eye liquid crystal panel 121 causes a prism effect on the light 911 that has passed through it. Accordingly, the viewer can see the left view image in the main viewing direction toward the point where the stereoscopic image perceived by the brain is located.

 The emitted light 912 for displaying the right eye view image is incident on the right eye liquid crystal panel 122 along the path 961. The light 962 that has been incident on the liquid crystal panel 122 passes through the right eye liquid crystal panel 122 along the path 962 and the light 962 that has passed through the right eye liquid crystal panel 122 enters the right eye 922 along the path 963 . In other words, the right-eye liquid crystal panel 122 causes a prism effect on the light 912 passing through it. Accordingly, the viewer can see the right eye view image in the direction of the main visual line toward the point where the stereoscopic image perceived by the brain is located.

The size of the prism effect can be calculated using the following equation (1).

The control unit 320 may calculate a prism diopter for minimizing visual fatigue using the following equation (2).

Here, the distance 901 is the distance between the eyes, the distance 904 is the distance from the eyeball to the stereoscopic image 913, and the distance 903 is the distance from the eyeball to the display 130. The distance 904 may also be calculated from the difference between the distance 903 and the distance 902. The distance 902 may be a depth value of the stereoscopic image, and the distance 903 may be a distance. Hereinafter, the distance 904 will be described as a main viewpoint distance. The distance 903 can be measured by the stereoscopic image processing apparatus 110 and can be measured by the glasses 120. The stereoscopic image processing apparatus 110 and the glasses 120 transmit the measured distance 903 to each other And the stereoscopic image processing apparatus 110 may transmit the measured distance 903 together with the depth value of the stereoscopic image. Also, the distance 903 can be measured through a Depth camera, can be calculated through an image captured by a viewer, and can be measured using a ray or a radio wave.

10 is a view for explaining a congestion operation and an estimation operation when viewing a long distance and a short distance.

10, when the eyes 1021 and 1022 see an object 1011 at a long distance from each other, a convergence angle, which is an angle formed by the eyes 1021 and 1022 and the principal point 1011, is 1021-1011- An approximate action occurs in which both eyes run parallel to each other so as to form an angle of 1022 degrees. However, when the two eyes 1021 and 1022 see the object 1012 at a close distance, the convergence angle formed by the eyes 1021 and 1022 and the view point 1012 is set to be 1021-1012-1022, And the convergence of convergence to the center occurs.

When the stereoscopic image is viewed, the display panel is located at the point 1011, but the position of the stereoscopic image seen by the viewer through the display panel is at the point 1012, and the position 1012 of the stereoscopic image perceived by the brain, The actual positions 1011 do not coincide with each other, so that human factors such as visual fatigue are generated due to adjustment and runaway.

In the present invention, because of the prism effect, the viewpoint images 911 and 912 can be seen in the main sight direction of the stereoscopic image perceived by the brain. Therefore, the present invention can minimize the visual fatigue caused by the mismatch between the congestion angle when viewing the viewpoint images 911 and 912 and the congestion angle when viewing the stereoscopic image perceived by the brain.

11 is a flowchart illustrating a method of processing a stereoscopic image according to an exemplary embodiment of the present invention.

Referring to FIG. 11, the formatter 270 outputs the left eye view image and the right eye view image (S100).

The formatter 270 transmits a depth value for adjusting the prism diopter of the glasses having the prism effect to the irradiated light to display the outputted left eye view image and the right eye view image (S110). In this case, the formatter 270 can calculate the depth value and can receive the depth value from the control unit 240. The formatter 270 may transmit a sync signal for synchronizing the operation of the eyeglass shutter with the depth value at the time when the left eye view image and the right eye view image are displayed.

The glasses adjust their prism diopter based on the depth value transmitted by the formatter 270 (S120). Here, the prism diopter can be calculated on the basis of a value calculated by dividing the distance between both eyes by the principal point distance calculated using the distance and the depth value, and a difference between the values calculated by dividing the distance between the eyes by the distance. Also, the glasses can calculate the prism diopter using Equation (2). And the glasses can be set to a prism diopter that produces their own prism diopter.

The display 130 displays the outputted left eye view image and right eye view image (S130). Here, the display 130 can display a left-eye view image and a right-eye view image using a shutter glass system, and can display a left-eye view image and a right-eye view image using a polarization method.

A prism effect is generated in the light transmitted through the glasses (S140). In step S130, the emitted light for displaying the left eye view image and the right eye view image is incident on the liquid crystal panel of the eyeglass, and a prism effect is generated in the light incident on the prism diopter of the eyeglasses. Accordingly, the viewer can see the actual screen in a direction in which the stereoscopic image perceived by the brain is located. Thus, the present invention can drastically hide the visual fatigue phenomenon caused by the mismatch of the congestion angle when viewing the stereoscopic image.

12 is a flowchart illustrating a method of driving a spectacle according to an exemplary embodiment of the present invention.

Referring to FIG. 12, the receiving unit 310 receives the depth value transmitted from the stereoscopic image processing apparatus (S200). Here, the receiving unit 310 may receive the depth value transmitted in step S110 described above.

The control unit 320 calculates a prism diopter using the depth value received by the receiving unit 310 and the distance between both eyes (S210). Herein, the prism diopter can be calculated on the basis of the difference between the value calculated by dividing the distance between the binocular eyes by the principal point distance calculated using the distance and the depth value, and the distance calculated by dividing the distance between the eyes by the distance. Also, the controller 320 may calculate the prism diopter using Equation (2).

The control unit 320 calculates a voltage value to be applied to the liquid crystal pixel of the glasses based on the calculated prism diopter (S220).

The control unit 320 controls the application of the voltage to the liquid crystal pixels of the glasses according to the calculated voltage value (S230).

The above-described step 120 may include steps S210, S220, and S230.

FIG. 13 is a flowchart illustrating a method of performing a stereoscopic image processing method according to another exemplary embodiment of the present invention.

Referring to FIG. 13, the controller 240 calculates a control value using a Depth value of a stereoscopic image and a distance between both eyes (S300). Wherein the control value may be one of a prism diopter and a voltage value. Also, the prism diopter can be calculated on the basis of the value calculated by dividing the distance between both eyes by the principal point distance calculated using the distance and depth values, and the difference between the values calculated by dividing the distance between the eyes by the distance. The control unit 240 may calculate the prism diopter using Equation (2). Further, the control unit 240 may calculate the voltage value to be applied to the liquid crystal pixels of the glasses based on the calculated prism diopter.

The formatter 270 outputs a left eye view image and a right eye view image (S310).

The formatter 270 transmits the control value calculated by the controller 240 (S320). The formatter 270 may transmit a sync signal for synchronizing the operation of the eyeglass shutter with the depth value at the time when the left eye view image and the right eye view image are displayed.

In some embodiments, instead of the control unit 240, the formatter 270 may calculate the control value.

The glasses adjust the prism diopter of the glasses based on the transmitted control value (S330). When the transmitted control value is a prism diopter, the spectacles calculate a voltage value based on the transmitted control value, and can apply a voltage to the liquid crystal pixel according to the calculated voltage value. When the transmitted control value is a voltage value, the spectacles can apply a voltage to the liquid crystal pixel of the eyeglasses according to the transmitted voltage value.

The display 130 displays the outputted left eye view image and right eye view image (S340). Here, the display 130 can display a left-eye view image and a right-eye view image using a shutter glass system, and can display a left-eye view image and a right-eye view image using a polarization method.

The glasses generate a prism effect on the light transmitted through the glasses (S350). In step S340, the emitted light for displaying the left eye view image and the right eye view image is incident on the liquid crystal panel of the eyeglasses, and a prism effect is generated in the light ray incident on the prism diopter of the eyeglasses.

FIG. 14 is a flowchart illustrating a method of driving an eyeglass according to another embodiment of the present invention.

Referring to FIG. 14, the receiving unit 310 receives a control value transmitted from the stereoscopic image processing apparatus (S400). Here, the receiving unit 310 may receive the control value transmitted in the above-described step S320.

The control unit 320 calculates a voltage value based on the control value received by the receiving unit 310 (S410).

The control unit 320 applies a voltage to the liquid crystal pixel of the eyeglasses according to the calculated voltage value (S420).

The above-described step S330 may include steps S410 and S420.

FIG. 15 is a flowchart illustrating a method of driving a spectacle lens according to another embodiment of the present invention. Referring to FIG.

Referring to FIG. 15, the receiving unit 310 receives a control value transmitted from the stereoscopic image processing apparatus (S500). Here, the receiving unit 310 may receive the control value transmitted in the above-described step S320.

The control unit 320 controls the voltage application to the liquid crystal pixels of the glasses according to the control value received by the receiving unit 310 (S510).

The above-described step S330 may include step S510.

The present invention can also be embodied as computer-readable codes on a computer-readable recording medium. A computer-readable recording medium includes all kinds of recording apparatuses in which data that can be read by a computer apparatus is stored. Examples of the computer-readable recording medium include a ROM, a RAM, a CD-ROM, a magnetic tape, a floppy disk, an optical data storage device, and the like, and may be implemented in the form of a carrier wave (for example, transmission via the Internet) . The computer-readable recording medium may also be distributed to networked computer devices so that computer readable code can be stored and executed in a distributed manner.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is clearly understood that the same is by way of illustration and example only and is not to be taken by way of limitation in the embodiment in which said invention is directed. It will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the scope of the appended claims.

Claims (20)

delete delete delete delete delete delete delete delete In the liquid crystal glasses,
A receiving unit for receiving a control value for adjusting the prism diopter of the liquid crystalglass from the stereoscopic image processing apparatus;
A control unit for calculating a prism diopter based on the received control value and setting the calculated prism diopter to prism diopter of the liquid crystalglass; And
And a liquid crystal panel irradiated to display a left eye view image and a right eye view image according to the set prism diopter to generate a prism effect on light incident on the glasses,
Wherein the prism diopter is a value that is variably controlled by the control of the control unit as a refracting power of a lens provided in the liquid crystal panel. 10. The method of claim 9,
Wherein the control value is one of a Depth value, a prism diopter, and a voltage value of the stereoscopic image displayed as the left eye view image and the right eye view image. 11. The method of claim 10,
Wherein,
Calculating a prism diopter using the depth value and the distance between both eyes, and controlling the prism diopter of the liquid crystalglass to be set to the calculated prism diopter. 12. The method of claim 11,
Wherein,
The prism diopter is calculated on the basis of the difference between the value calculated by dividing the distance between the eyes by the principal point distance calculated by using the visual distance and the depth value and the distance calculated by dividing the distance between the eyes by the visual distance, Liquid crystal glasses. 12. The method of claim 11,
Wherein,
Calculates a voltage value to be applied to the liquid crystal pixel of the liquid crystal panel based on the calculated prism diopter, and controls the application of the voltage to the liquid crystal pixel according to the calculated voltage value. A formatter for transmitting a control value for adjusting a prism diopter of a spectacle having a prism effect on the irradiated light for displaying a left eye view image and a right eye view image, The depth value of the image; And
And controlling the prism diopter based on the transmitted control value and generating a prism effect on the light transmitted through the prism diopter,
The control unit of the eyeglasses,
Calculating the prism diopter using the control value, calculating a voltage value to be applied to the liquid crystal pixel of the eyeglass based on the calculated prism diopter, and applying a voltage corresponding to the calculated voltage value to the glasses Thereby generating the prism effect. delete 15. The method of claim 14,
The control unit of the eyeglasses,
Wherein the prism diopter is calculated using the depth value and the distance between both eyes, and the prism diopter of the spectacle is set to the calculated prism diopter. 15. The method of claim 14,
Wherein the control value is one of a prism diopter and a voltage value. delete 15. The method of claim 14,
The control unit of the eyeglasses,
Wherein the prism diopter is calculated based on a difference between a value calculated by dividing the distance between both eyes by the principal point distance calculated using the visual distance and the depth value and a value calculated by dividing the distance between the eyes by the visual distance Stereoscopic image processing system. delete

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