WO2013008282A1 - Viewing angle correction device, viewing angle correction method, and viewing angle correction program - Google Patents

Viewing angle correction device, viewing angle correction method, and viewing angle correction program Download PDF

Info

Publication number
WO2013008282A1
WO2013008282A1 PCT/JP2011/065676 JP2011065676W WO2013008282A1 WO 2013008282 A1 WO2013008282 A1 WO 2013008282A1 JP 2011065676 W JP2011065676 W JP 2011065676W WO 2013008282 A1 WO2013008282 A1 WO 2013008282A1
Authority
WO
WIPO (PCT)
Prior art keywords
viewing angle
liquid crystal
crystal display
display device
face
Prior art date
Application number
PCT/JP2011/065676
Other languages
French (fr)
Japanese (ja)
Inventor
明生 石渡
Original Assignee
Ｎｅｃディスプレイソリューションズ株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Ｎｅｃディスプレイソリューションズ株式会社 filed Critical Ｎｅｃディスプレイソリューションズ株式会社
Priority to PCT/JP2011/065676 priority Critical patent/WO2013008282A1/en
Publication of WO2013008282A1 publication Critical patent/WO2013008282A1/en

Links

Images

Classifications

    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G5/00—Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators
    • G09G5/14—Display of multiple viewports
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2320/00—Control of display operating conditions
    • G09G2320/02—Improving the quality of display appearance
    • G09G2320/028—Improving the quality of display appearance by changing the viewing angle properties, e.g. widening the viewing angle, adapting the viewing angle to the view direction
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2330/00—Aspects of power supply; Aspects of display protection and defect management
    • G09G2330/02—Details of power systems and of start or stop of display operation
    • G09G2330/026—Arrangements or methods related to booting a display

Definitions

  • the present invention relates to a viewing angle correction device, a viewing angle correction method, and a viewing angle correction program that correct an image whose color changes according to the viewing angle.
  • the color may change depending on the position of the viewpoint.
  • a means for improving the color change there is a technique for improving the brightness and the degree of color change mainly by the structure in the liquid crystal display device or the alignment method of the liquid crystal molecules.
  • this method includes a factor that increases the cost of the liquid crystal display device.
  • the display of the liquid crystal display device is uniformly corrected, for example, when an observer faces a large screen display device at a short distance, the color appearance may be different in an angled portion.
  • the present invention has been made in consideration of such circumstances, and has been made to solve the above-described problems.
  • the object of the present invention is to correct an image in which a color change is caused by a viewing angle characteristic according to the position of an observer.
  • a viewing angle correction apparatus, a viewing angle correction method, and a viewing angle correction program are provided.
  • a viewing angle correction device detects an input unit that inputs a video signal to be displayed on a liquid crystal display device, a human face existing in a detection area, and the liquid crystal display device. Based on a viewing angle characteristic corresponding to a relative positional relationship between the display screen of the liquid crystal display device and the face, a detection unit that detects relative positional information indicating a relative positional relationship between the display screen and the face The correction value of the color coordinate to be corrected is acquired based on the relative position information with reference to the storage unit storing the correction value, and based on the correction value according to the relative positional relationship with the face And a viewing angle correction unit that outputs a corrected video signal obtained by correcting the video signal for each pixel.
  • the viewing angle correction unit indicates a relative positional relationship between the display screen of the liquid crystal display device and each face when the detection unit detects a plurality of human faces.
  • Relative position information is input for each detected face, and based on each relative position information, the video signal is corrected for each pixel based on the correction value corresponding to the relative positional relationship with the detected face.
  • a corrected video signal is generated for each detected face, and an image indicated by the corrected video signal is displayed in a display screen of the liquid crystal display device corresponding to the detected face position. .
  • the viewing angle correction unit simultaneously displays images indicated by a plurality of corrected video signals created for each detected face on the screen of the liquid crystal display device.
  • the viewing angle correction unit displays images indicated by a plurality of corrected video signals created for each detected face at different timings on the screen of the liquid crystal display device. It is characterized by that.
  • a viewing angle correction method inputs a video signal to be displayed on a liquid crystal display device, detects a person's face existing in a detection area, and displays the display screen of the liquid crystal display device.
  • Relative position information indicating the relative positional relationship between the face and the face, and the color coordinates to be corrected based on the viewing angle characteristics according to the relative positional relationship between the display screen of the liquid crystal display device and the face
  • a correction value is acquired based on the relative position information with reference to a storage unit that stores the correction value, and the video signal is obtained for each pixel based on the correction value according to the relative positional relationship with the face.
  • the corrected video signal corrected in the above is output.
  • a viewing angle correction program includes a procedure for inputting a video signal to be displayed on a liquid crystal display device to a computer, a procedure for detecting a human face existing in a detection area, and the liquid crystal Based on a procedure for detecting relative position information indicating a relative positional relationship between the display screen of the display device and the face, and a viewing angle characteristic according to a relative positional relationship between the display screen of the liquid crystal display device and the face
  • an image in which a color change is caused by the viewing angle characteristic can be corrected according to the position of the observer.
  • FIG. 1 is a diagram illustrating an example of a viewing angle correction apparatus 100 according to the present embodiment.
  • the viewing angle correction device 100 is connected to a liquid crystal display device 200, and the correction according to the viewing angle characteristics is performed according to the relative position of the user with respect to the display screen of the liquid crystal display device 200. Is applied to the input video signal, and the corrected video signal is output to the liquid crystal display device 200.
  • the viewing angle correction apparatus 100 includes an input unit 101, a detection unit 102, a storage unit 103, a viewing angle correction unit 104, and an output unit 105.
  • the input unit 101 includes a video signal processing unit that processes the input video signal so as to obtain a desired image quality.
  • the image quality includes brightness, white balance, gamma correction, and the like of an image displayed on the liquid crystal display device 200.
  • the detection unit 102 detects relative position information indicating the relative position of the person's face with respect to the display screen of the liquid crystal display device 200 and outputs the relative position information to the viewing angle correction unit 104.
  • the relative position information will be described in detail with reference to FIG.
  • FIG. 2 is a diagram for explaining the relative positional relationship and the viewing angle between the display screen of the liquid crystal display device 200 and a human face. As shown in FIG. 2, a viewpoint of a person with respect to each pixel of the display screen of the liquid crystal display device 200 is a viewpoint P.
  • the relative positional relationship between the display screen and the face includes an azimuth angle ⁇ indicating the direction of the viewpoint P with respect to each pixel in the plane direction of the display screen, and the viewpoint P with respect to each pixel in a plane orthogonal to the display screen. It is represented by a polar angle ⁇ indicating the direction. That is, the relative position information is information representing the positional relationship between each pixel and the viewpoint P by the azimuth angle ⁇ and the polar angle ⁇ .
  • the detection unit 102 may be a human sensor that detects a person's face using an infrared sensor or the like and acquires relative position information indicating the position of the person's face with respect to the liquid crystal display device 200.
  • the detection unit 102 includes a camera, detects a person's face using pattern recognition technology based on the captured image data, and acquires relative position information indicating the position and orientation of the person's face with respect to the liquid crystal display device 200. You may do.
  • the detection unit 102 includes a measuring device that measures the distance between the display screen of the liquid crystal display device 200 and the detected person, and acquires relative position information based on the measured distance.
  • the detection unit 102 includes information indicating the position of the viewpoint P of the person's face in the captured two-dimensional image, and information indicating the distance between the object corresponding to the viewpoint P and the display screen in the real space. Based on the above, relative position information indicating the relative positional relationship between the viewpoint P and the display screen in the three-dimensional space is calculated.
  • the detection unit 102 determines a predetermined position on the face of the person as the viewpoint P, and acquires relative position information.
  • the viewpoint P is determined in advance to be the midpoint between both eyes of a person's face.
  • the storage unit 103 is a viewing angle characteristic correction that is a correction value of color coordinates that should be corrected based on a viewing angle characteristic that is determined in advance according to the relative positional relationship between the display screen of the liquid crystal display device 200 and a human face.
  • a table associating the coefficient with relative position information indicating the relative positional relationship of the person's face with respect to the display screen is stored.
  • this table is a table that correlates the viewing angle characteristic correction coefficient given to each pixel according to the viewpoint P according to the viewpoint P represented by the azimuth angle ⁇ and the polar angle ⁇ .
  • the viewing angle characteristic correction coefficient varies depending on the viewing angle characteristic of the liquid crystal display device 200.
  • As the viewing angle characteristic correction coefficient a value for correcting the viewing angle characteristic is determined in advance according to the relative positional relationship between the viewpoint P and each pixel based on information indicating the actually measured viewing angle characteristic. .
  • the storage unit 103 is not limited to a configuration that stores a table created in advance as described above, and is determined in advance according to, for example, the relative positional relationship of a person's face with respect to the display screen of the liquid crystal display device 200.
  • the relational expression for calculating the viewing angle characteristic correction coefficient which is the correction value of the color coordinate to be corrected based on the viewing angle characteristic, may be stored.
  • the viewing angle correction unit 104 refers to this relational expression and viewing angle characteristics given to each pixel corresponding to the viewpoint P represented by the azimuth angle ⁇ and polar angle ⁇ of the relative position information input from the detection unit 102. A correction coefficient is calculated.
  • the storage unit 103 holds the above-described table will be described below.
  • the viewing angle correction unit 104 is a viewing angle that is a correction value of color coordinates to be corrected based on a viewing angle characteristic determined in advance according to the relative positional relationship between the display screen of the liquid crystal display device 200 and a human face.
  • a characteristic correction coefficient is acquired based on the relative position information detected by the detection unit 102, and a corrected video signal obtained by correcting the video signal based on the correction value is output.
  • the viewing angle correction unit 104 refers to the storage unit 103 and calculates a viewing angle characteristic correction coefficient to be given to each pixel corresponding to the viewpoint P represented by the azimuth angle ⁇ and polar angle ⁇ of the relative position information. calculate.
  • the viewing angle correction unit 104 outputs a corrected video signal obtained by correcting the video signal input from the input unit 101 based on the viewing angle characteristic correction coefficient to the output unit 105.
  • the output unit 105 outputs the corrected video signal output from the viewing angle correction unit 104 to the liquid crystal display device 200.
  • the liquid crystal display device 200 displays an image whose viewing angle is corrected according to the positional relationship between the display screen and the viewpoint P based on the corrected video signal input from the output unit 105 of the viewing angle correction device 100.
  • FIG. 3 is a flowchart for explaining an example of the viewing angle correction method according to the present embodiment.
  • Step ST1 As shown in FIG. 3, when a human face is present in the detection area in the real space, the detection unit 102 detects the presence of the human face and detects the human face and the liquid crystal display device 200. Relative position information indicating a relative positional relationship with the display screen is calculated. For example, when the detection unit 102 performs pattern recognition on the image data captured by the camera and detects a person's face, the detection unit 102 detects the coordinates of the viewpoint P, which is an intermediate point between both eyes included in the face, in the image. .
  • the detection unit 102 is based on information output from a measurement device that measures the distance between the detected human face and the display screen, in a three-dimensional space between the position of the coordinates of the viewpoint P in the image and the display screen. Information indicating the positional relationship is obtained by calculation, and the azimuth angle ⁇ and polar angle ⁇ with respect to the viewpoint P are calculated to obtain relative position information. Then, the detection unit 102 outputs this relative position information to the viewing angle correction unit 104.
  • the viewing angle correction unit 104 refers to the storage unit 103 and calculates a viewing angle characteristic correction coefficient corresponding to the viewpoint P represented by the azimuth angle ⁇ and the polar angle ⁇ of the relative position information for each pixel. Based on this viewing angle characteristic correction coefficient, the viewing angle correction unit 104 corrects white balance, gamma curve, and the like corresponding to each pixel of the video signal input from the input unit 101, and sets the viewing angle characteristic correction coefficient for each pixel.
  • the corrected video signal subjected to the correction based on the output is output to the output unit 105.
  • the output unit 105 outputs the corrected video signal output from the viewing angle correction unit 104 to the liquid crystal display device 200.
  • the liquid crystal display device 200 displays an image whose viewing angle is corrected according to the positional relationship between the display screen and the viewpoint P based on the corrected video signal input from the output unit 105 of the viewing angle correction device 100.
  • the pixel value of each pixel constituting the video signal is corrected based on the viewing angle characteristic correction coefficient based on the relative position information indicated by the azimuth angle ⁇ and polar angle ⁇ from the viewpoint P.
  • FIG. 4 is a diagram for explaining an example of the relative positional relationship between the user's viewpoint position P and the display screen of the liquid crystal display device 200.
  • the liquid crystal display device 200 according to the present embodiment has, for example, a rectangular display screen that is long in the horizontal direction and short in the vertical direction.
  • FIG. 4 shows a state in which the liquid crystal display device 200 is looked down from above when the liquid crystal display device 200 is arranged so that the horizontal direction is horizontal.
  • the liquid crystal display device 200 shown in FIG. 4 has a horizontal length (width) of the display screen of 1.7 m, for example. It is assumed that the user stands toward the front of the screen at the horizontal center position with respect to the display screen. At this time, the user is at a position 0.5 m away from the liquid crystal display device 200. As shown in the figure, when the viewpoint P and the end of the liquid crystal display device 200 are connected, the angle is 60 °. That is, the polar angle ⁇ between the pixel arranged at the end of the liquid crystal display device 200 and the viewpoint P is 30 °. In this case, the position of the user's viewpoint P and the center position of the display screen of the liquid crystal display device 200 does not change in color due to viewing angle characteristics in the positional relationship.
  • the polar angle ⁇ becomes tight, and a color change occurs due to viewing angle characteristics.
  • the display content of the entire screen is corrected according to the user's viewpoint P. Cannot be done properly.
  • the present invention performs correction based on the viewing angle characteristic correction coefficient for each pixel according to the relative position information as described above, the present invention is a case as shown in FIG. 4, and is the end of the display screen of the liquid crystal display device 200.
  • the present invention is a case as shown in FIG. 4, and is the end of the display screen of the liquid crystal display device 200.
  • the measurement data even when the color coordinates of the all white screen are compared in a liquid crystal display device with good viewing angle characteristics, a difference of about 0.010 occurs in ⁇ xy. Since a human can perceive a color coordinate difference of 0.003, he / she recognizes a clear white shift.
  • the present invention detects information indicating the positional relationship of the position of the observer's face by the detection unit 102 such as a human sensor, calculates the angle between each pixel and the observer (viewpoint P), Recalculate the color so that it looks the same as it looks on the surface.
  • the detection unit 102 such as a human sensor
  • the viewing angle correction apparatus 100 performs correction processing in an extremely short time, and displays an input video signal on the liquid crystal display device 200 with a time difference close to real time.
  • the viewing angle correction apparatus 100 performs correction processing in an extremely short time, and displays an input video signal on the liquid crystal display device 200 with a time difference close to real time.
  • FIG. 5 is a reference diagram for explaining an example of the viewing angle correction method according to the present embodiment.
  • FIG. 6 is a diagram for explaining an example of the configuration of the viewing angle correction apparatus 1100 according to the present embodiment.
  • the apparatus configuration is expanded in response to a case where the viewpoint P is a plurality of viewpoints P1 to Pn in the viewing angle correction method by the viewing angle correction apparatus 100 according to the first embodiment described above. To do.
  • FIG. 5 shows an example of a liquid crystal display device 1200 embedded in a table.
  • this liquid crystal display device 1200 rectangular display screens are arranged in parallel with the horizontal direction, and the user can view the display screen from four directions.
  • the viewing angle characteristic when viewed from the short side in the vertical direction in the liquid crystal display device 200 is different from the viewing angle characteristic when viewed from the long side in the horizontal direction.
  • the screen A that displays an image for the user a who views the display screen of the liquid crystal display device 1200 from the long side of the display screen of the liquid crystal display device 1200, and the liquid crystal from the short side of the display screen of the liquid crystal display device 1200
  • the screen B which displays an image with respect to the user b who sees the display screen of the display apparatus 1200 is shown.
  • the viewing angle correction apparatus 1100 includes an input unit 101, a detection unit 102, a storage unit 103, an output unit 105, a video distribution unit 106, an image synthesis circuit 107, a first viewing angle correction unit 141, and a second viewing angle. , And an Nth viewing angle correction unit 140 + N.
  • symbol is attached
  • the detection unit 102 detects the face of a person existing in the detection area, and outputs information indicating the number of detected faces to the video distribution unit 106.
  • the detection unit 102 acquires relative position information for each detected human face, and outputs the relative position information to a viewing angle correction unit that is generated according to the detected human face.
  • the detection unit 102 detects a plurality of viewpoints P1 to PN
  • the relative position information corresponding to each of the viewpoints P1 to PN is converted into the first viewing angle correction unit 141, the second viewing angle correction unit 142,.
  • the viewpoint P1 is the viewpoint of the observer a
  • the viewpoint 2 is the viewpoint of the observer b.
  • the detection unit 102 Based on the relative position information, the detection unit 102 acquires a position where the observer is present with respect to the display screen, determines a screen in the display screen that is predetermined according to the position where the observer is present, Screen information indicating a screen in the display screen is acquired. The detection unit 102 obtains the acquired screen information together with the relative position information corresponding to each of the viewpoints P1 to PN, together with the first viewing angle correction unit 141, the second viewing angle correction unit 142,. Output to the correction unit 140 + N.
  • This screen information is information indicating the position and size of the screen displayed in the display screen of the liquid crystal display device 1200.
  • the position of the screen within the display screen is indicated by display areas O, P, Q, and R that are divided at predetermined positions on the display screen, as shown in FIG.
  • the orientations of the images displayed in the display areas O to R are determined in advance so that each of the four sides of the display screen is parallel to the bottom surface of the screen.
  • the screen information indicating the screen A indicates that the screen is displayed in the display area O so that the bottom surface of the screen is close to the side 1201 of the display screen of the liquid crystal display device 1200 and is parallel to the side 1201.
  • the screen information indicating the screen B indicates that the screen is displayed in the display area R so that the bottom surface of the screen is parallel to the side 1202 at a position close to the side 1202 of the display screen of the liquid crystal display device 1200.
  • the detection unit 102 may acquire information indicating the orientation of the person's face when acquiring the relative position information corresponding to the detected viewpoints P1 to PN of the person's face. For example, when detecting the viewpoints P1 to PN of the detected human face, the detection unit 102 determines the screen orientation in the display screen according to the orientation of the human face based on the direction in which both eyes are lined up. You may do.
  • the video distribution unit 106 Based on the information indicating the number of detected faces input from the detection unit 102, the video distribution unit 106 duplicates (copies) the video signal input from the input unit 101 by the number of detected faces. Output to the viewing angle correction unit 141, the second viewing angle correction unit 142,..., The Nth viewing angle correction unit 140 + N.
  • the first viewing angle correction unit 141, the second viewing angle correction unit 142,..., The Nth viewing angle correction unit 140 + N are generated by the viewing angle correction device 1100 by the number of human faces detected by the detection unit 102. In this embodiment, an example in which the faces of N persons are detected by the detection unit 102 is shown.
  • the first viewing angle correction unit 141 inputs relative position information corresponding to the viewpoint P1 and screen information corresponding to the viewpoint P1 (relative position information) from the detection unit 102.
  • the first viewing angle correction unit 141 is a correction value of color coordinates to be corrected based on a viewing angle characteristic determined in advance according to the relative positional relationship between the display screen of the liquid crystal display device 1200 and the human face.
  • a certain viewing angle characteristic correction coefficient is acquired based on the relative position information detected by the detection unit 102 with reference to the storage unit 103.
  • the first viewing angle correction unit 141 associates screen information input from the detection unit 102 with the first corrected video signal obtained by correcting the video signal based on the relative position information, and outputs the first correction video signal to the image synthesis unit 107.
  • the first viewing angle correction unit 141 performs correction on the video signal according to the viewing angle characteristic corresponding to the viewpoint P1 of the observer a, and corresponds the screen information indicating the screen A to the corrected video signal. And output to the image composition unit 107.
  • the second viewing angle correction unit 142 inputs relative position information corresponding to the viewpoint P2 and screen information corresponding to the viewpoint P2 (relative position information) from the detection unit 102.
  • the second viewing angle correction unit 142 is a correction value of color coordinates to be corrected based on a viewing angle characteristic determined in advance according to the relative positional relationship between the display screen of the liquid crystal display device 1200 and a human face.
  • a certain viewing angle characteristic correction coefficient is acquired based on the relative position information detected by the detection unit 102 with reference to the storage unit 103.
  • the second viewing angle correction unit 142 outputs a second corrected video signal obtained by correcting the video signal based on the relative position information to the image synthesis unit 107.
  • the second viewing angle correction unit 142 performs correction according to the viewing angle characteristic corresponding to the viewpoint P2 of the observer b on the video signal, and the screen information indicating the screen B corresponds to the corrected video signal. And output to the image composition unit 107.
  • the image composition circuit 107 is based on the corrected video signal associated with the screen information input from the first viewing angle correction unit 141, the second viewing angle correction unit 142,..., The Nth viewing angle correction unit 140 + N.
  • the images corrected by the respective viewing angle correction units are combined to create data to be displayed on the display screen of the liquid crystal display device 1200.
  • the image composition circuit 107 creates data for displaying the video corrected by each viewing angle correction unit on the screen in the display screen of the liquid crystal display device 200 indicated by each screen information, and outputs the data to the output unit 105. Output.
  • the image composition circuit 107 generates data for displaying the video based on the first corrected video signal on the screen A and displaying the video based on the second corrected video signal on the screen B, and outputs the data to the output unit 105. Output. Based on the data input from the image composition unit 107, the output unit 105 displays images corrected on the screen A and the screen B according to the viewing angle characteristics according to the viewpoint P1 of the observer a and P2 of the observer b, respectively. Is displayed on the liquid crystal display device 1200.
  • the viewing angle correction apparatus 1100 corrects the viewing angle characteristics according to the position of the user with respect to the display screen of the liquid crystal display device 1200, so that the viewing angle correction apparatus 1100 can An image expressed in color can be displayed.
  • the viewing angle characteristics when viewed from the short side in the vertical direction and the viewing angle characteristics when viewed from the long side in the horizontal direction are different, depending on the position of the user An image with the corrected viewing angle characteristic can be displayed.
  • the number of observers and the number of screens in the display screen are not limited, and two or more sets (N) are possible.
  • the displayed video may be the same video source or a combination of different video sources.
  • the video distribution unit 106 does not duplicate and distribute the same video data, but the video data input from the input unit 101 is determined in advance according to screen information associated with the video data and input timing.
  • the video distribution unit 106 supplies the video data to an arbitrary viewing angle correction unit among the first viewing angle correction unit 141, the second viewing angle correction unit 142,..., The Nth viewing angle correction unit 140 + N. May be distributed.
  • the viewing position is fixed when one of the viewpoints is corrected by the viewing angle characteristic. For this reason, when viewed from other positions, the color appearance is broken. For example, when the posture is changed or viewed from a third party, the color display that should be originally expressed may not be confirmed. According to the present embodiment, it is possible to solve the problems of “degree of freedom of viewing position” and “cannot consider two or more viewpoints”.
  • FIG. 8 is a reference diagram for explaining an example of the viewing angle correction method according to the present embodiment.
  • the apparatus configuration is expanded in response to a case where the viewpoint P is a plurality of viewpoints P1 to Pn in the viewing angle correction method by the viewing angle correction apparatus 100 according to the first embodiment described above.
  • this embodiment is an embodiment in which the second embodiment is further expanded and the observer has glasses having an active shutter function.
  • the shutter of the observer's glasses and the display screen of the display device are synchronized, and the screen display for each observer is displayed in a time-sharing manner for the number of people. At that time, an image with optimum viewing angle correction is displayed for each observer.
  • FIG. 8A shows a display screen of the liquid crystal display device 1200 when the shutter of the glasses of the observer a is ON. That is, at the timing when the observer a can view the display screen of the liquid crystal display device 1200, an image corresponding to the screen A ′ is displayed on the display screen of the liquid crystal display device 1200.
  • FIG. 8B shows a display screen of the liquid crystal display device 1200 when the shutter of the eyeglasses of the observer b is ON. That is, at the timing at which the observer b can see the display screen of the liquid crystal display device 1200, an image corresponding to the screen B ′ is displayed on the display screen of the liquid crystal display device 1200.
  • the viewing angle correction device 1100 the device described in the second embodiment can be used.
  • the present embodiment an example in which a plurality of viewpoints P1 and P2 are detected by the detection unit 102 will be described.
  • the viewing angle correction apparatus 1100 according to this embodiment is suitable for a case where the number of viewpoints is small because the timing for displaying an image is shifted according to the number of viewpoints.
  • the viewing angle correction apparatus 1100 when the viewpoints P1 and P2 are detected by the detection unit 102, the viewing angle correction apparatus 1100 has a viewing angle characteristic corresponding to the viewpoint P1 of the observer a with respect to the first viewing angle correction unit 141. A corrected first corrected video signal is generated. In addition, the viewing angle correction apparatus 1100 causes the second viewing angle correction unit 142 to generate a second corrected video signal in which the viewing angle characteristics are corrected according to the viewpoint P2 of the observer b.
  • the image synthesis circuit 107 outputs the input first corrected video signal and second corrected video signal to the output unit 105 without performing a synthesis process for displaying the same on the same screen.
  • the output unit 105 controls the liquid crystal display device 1200 to display the first corrected video signal on the screen A ′ of the liquid crystal display device 1200 in the odd-numbered frame, and the second corrected video signal in the liquid crystal display device 1200 in the even-numbered frame.
  • the liquid crystal display device 1200 is controlled to display on the screen B ′ of the display device 1200.
  • the screen A ′ is the maximum screen that can be displayed on the display screen of the liquid crystal display device 1200 when the video size indicated by the video signal is enlarged, and is the entire screen.
  • the screen B ′ is the largest screen that can be displayed on the display screen of the liquid crystal display device 1200 when the video size indicated by the video signal is enlarged.
  • the operation process in each configuration of the above-described viewing angle correction apparatuses 100 and 1100 can be used as a program to be executed by a computer or a computer-readable recording medium as the program, and is read and executed by the computer system.
  • the “computer system” here includes a CPU, various memories, an OS, and hardware such as peripheral devices.
  • the “computer system” includes a homepage providing environment (or display environment) if a WWW system is used.
  • the “computer-readable recording medium” means a flexible disk, a magneto-optical disk, a ROM, a writable nonvolatile memory such as a flash memory, a portable medium such as a CD-ROM, a hard disk built in a computer system, etc. This is a storage device.
  • the “computer-readable recording medium” refers to a volatile memory (for example, DRAM (Dynamic) in a computer system serving as a server or a client when a program is transmitted via a network such as the Internet or a communication line such as a telephone line. Randam Access Memory)) that holds a program for a certain period of time is also included.
  • the program may be transmitted from a computer system storing the program in a storage device or the like to another computer system via a transmission medium or by a transmission wave in the transmission medium.
  • the “transmission medium” for transmitting the program refers to a medium having a function of transmitting information, such as a network (communication network) such as the Internet or a communication line (communication line) such as a telephone line.
  • the program may be for realizing a part of the functions described above. Furthermore, what can implement
  • DESCRIPTION OF SYMBOLS 100 ... Viewing angle correction apparatus, 101 ... Input part, 102 ... Detection part, 103 ... Memory
  • Display device 1100 ... viewing angle correction device, 1200 ... liquid crystal display device

Abstract

The present invention is characterized by being provided with: an input unit (101) that inputs a video signal that is to be displayed by a liquid crystal display device (200); a detection unit (102) that detects the face of a person who is present within a detection area, and detects relative position information indicating the relative positional relationship between the face and the display screen of the liquid crystal display device (200); and a viewing angle correction unit (104) that, on the basis of the relative position information and referring to a recording unit (103) that is to record correction values, acquires the correction values that are for color coordinates to be corrected on the basis of viewing angle characteristics and that are in accordance with the relative positional relationship between the face and the display screen of the liquid crystal display device (200), and outputs a corrected video signal that corrects the video signal at each pixel on the basis of the correction values that are in accordance with the relative positional relationship to the face.

Description

視野角補正装置、視野角補正方法および視野角補正プログラムViewing angle correction device, viewing angle correction method, and viewing angle correction program
　本発明は、視野角に応じて色変化する映像を補正する視野角補正装置、視野角補正方法および視野角補正プログラムに関する。 The present invention relates to a viewing angle correction device, a viewing angle correction method, and a viewing angle correction program that correct an image whose color changes according to the viewing angle.
　一般に用いられている液晶表示装置等の視野角依存性を持つ表示装置を観測者が斜めから見た場合、視点の位置に応じて色が変化する場合がある。この色変化を改善するものとしては、主に、液晶表示装置内の構造物もしくは液晶分子の配向方式により、輝度や色変化の度合いを改善させるものがある。 When a viewer views a display device having a viewing angle dependency such as a commonly used liquid crystal display device from an oblique direction, the color may change depending on the position of the viewpoint. As a means for improving the color change, there is a technique for improving the brightness and the degree of color change mainly by the structure in the liquid crystal display device or the alignment method of the liquid crystal molecules.
特開２００６－００５８８２号公報JP 2006-005882 A
　しかしながら、この方法によると、液晶表示装置のコストが高くなる要因を含んでいる。
　また、液晶表示装置の表示を一様に補正した場合、例えば、大画面の表示装置に対して観測者が近距離で向き合うと、角度がついた部分では色の見え方が異なる場合がある。 However, this method includes a factor that increases the cost of the liquid crystal display device.
In addition, when the display of the liquid crystal display device is uniformly corrected, for example, when an observer faces a large screen display device at a short distance, the color appearance may be different in an angled portion.
　本発明は、このような事情を考慮し、上記の問題を解決すべくなされたものであって、その目的は、視野角特性により色変化が生じる映像を観測者の位置に応じて補正することができる視野角補正装置、視野角補正方法および視野角補正プログラムを提供することにある。 The present invention has been made in consideration of such circumstances, and has been made to solve the above-described problems. The object of the present invention is to correct an image in which a color change is caused by a viewing angle characteristic according to the position of an observer. A viewing angle correction apparatus, a viewing angle correction method, and a viewing angle correction program.
　上記問題を解決するために、本発明に係る視野角補正装置は、液晶表示装置に表示させる映像信号を入力する入力部と、検出エリア内に存在する人物の顔を検出し、前記液晶表示装置の表示画面と前記顔との相対的な位置関係を示す相対位置情報を検出する検出部と、前記液晶表示装置の表示画面と前記顔との相対的な位置関係に応じた視野角特性に基づき補正すべき色座標の補正値を、当該補正値を記憶する記憶部を参照して、前記相対位置情報に基づき取得し、前記顔との相対的な位置関係に応じた前記補正値に基づき前記映像信号を各画素毎に補正した補正映像信号を出力する視野角補正部と、を備えることを特徴とする。 In order to solve the above problem, a viewing angle correction device according to the present invention detects an input unit that inputs a video signal to be displayed on a liquid crystal display device, a human face existing in a detection area, and the liquid crystal display device. Based on a viewing angle characteristic corresponding to a relative positional relationship between the display screen of the liquid crystal display device and the face, a detection unit that detects relative positional information indicating a relative positional relationship between the display screen and the face The correction value of the color coordinate to be corrected is acquired based on the relative position information with reference to the storage unit storing the correction value, and based on the correction value according to the relative positional relationship with the face And a viewing angle correction unit that outputs a corrected video signal obtained by correcting the video signal for each pixel.
　また、上述の視野角補正装置において、前記視野角補正部は、前記検出部が複数の人物の顔を検出した場合、前記液晶表示装置の表示画面と各顔との相対的な位置関係を示す相対位置情報を前記検出された顔ごとに入力し、各相対位置情報に基づき、前記検出された顔との相対的な位置関係に応じた前記補正値に基づき前記映像信号を各画素毎に補正した補正映像信号を前記検出された顔ごとに作成し、当該補正映像信号が示す画像を、前記検出された顔の位置に対応する前記液晶表示装置の表示画面内に表示させることを特徴とする。 Further, in the above-described viewing angle correction device, the viewing angle correction unit indicates a relative positional relationship between the display screen of the liquid crystal display device and each face when the detection unit detects a plurality of human faces. Relative position information is input for each detected face, and based on each relative position information, the video signal is corrected for each pixel based on the correction value corresponding to the relative positional relationship with the detected face. A corrected video signal is generated for each detected face, and an image indicated by the corrected video signal is displayed in a display screen of the liquid crystal display device corresponding to the detected face position. .
　また、上述の視野角補正装置において、前記視野角補正部は、前記検出された顔ごとに作成した複数の補正映像信号が示す画像を、前記液晶表示装置の画面内に同時に表示することを特徴とする。 Further, in the above-described viewing angle correction device, the viewing angle correction unit simultaneously displays images indicated by a plurality of corrected video signals created for each detected face on the screen of the liquid crystal display device. And
　また、上述の視野角補正装置において、前記視野角補正部は、前記検出された顔ごとに作成した複数の補正映像信号が示す画像を、前記液晶表示装置の画面内に、異なるタイミングで表示することを特徴とする。 Further, in the above-described viewing angle correction device, the viewing angle correction unit displays images indicated by a plurality of corrected video signals created for each detected face at different timings on the screen of the liquid crystal display device. It is characterized by that.
　上記問題を解決するために、本発明に係る視野角補正方法は、液晶表示装置に表示させる映像信号を入力し、検出エリア内に存在する人物の顔を検出し、前記液晶表示装置の表示画面と前記顔との相対的な位置関係を示す相対位置情報を検出し、前記液晶表示装置の表示画面と前記顔との相対的な位置関係に応じた視野角特性に基づき補正すべき色座標の補正値を、当該補正値を記憶する記憶部を参照して、前記相対位置情報に基づき取得し、前記顔との相対的な位置関係に応じた前記補正値に基づき前記映像信号を各画素毎に補正した補正映像信号を出力することを特徴とする。 In order to solve the above problem, a viewing angle correction method according to the present invention inputs a video signal to be displayed on a liquid crystal display device, detects a person's face existing in a detection area, and displays the display screen of the liquid crystal display device. Relative position information indicating the relative positional relationship between the face and the face, and the color coordinates to be corrected based on the viewing angle characteristics according to the relative positional relationship between the display screen of the liquid crystal display device and the face A correction value is acquired based on the relative position information with reference to a storage unit that stores the correction value, and the video signal is obtained for each pixel based on the correction value according to the relative positional relationship with the face. The corrected video signal corrected in the above is output.
　上記問題を解決するために、本発明に係る視野角補正プログラムは、コンピュータに、液晶表示装置に表示させる映像信号を入力する手順、検出エリア内に存在する人物の顔を検出する手順、前記液晶表示装置の表示画面と前記顔との相対的な位置関係を示す相対位置情報を検出する手順、前記液晶表示装置の表示画面と前記顔との相対的な位置関係に応じた視野角特性に基づき補正すべき色座標の補正値を、当該補正値を記憶する記憶部を参照して、前記相対位置情報に基づき取得する手順、前記顔との相対的な位置関係に応じた前記補正値に基づき前記映像信号を各画素毎に補正した補正映像信号を出力する手順、を実行させるためのプログラムであることを特徴とする。 In order to solve the above problems, a viewing angle correction program according to the present invention includes a procedure for inputting a video signal to be displayed on a liquid crystal display device to a computer, a procedure for detecting a human face existing in a detection area, and the liquid crystal Based on a procedure for detecting relative position information indicating a relative positional relationship between the display screen of the display device and the face, and a viewing angle characteristic according to a relative positional relationship between the display screen of the liquid crystal display device and the face A procedure for obtaining a correction value of a color coordinate to be corrected based on the relative position information with reference to a storage unit storing the correction value, and based on the correction value according to a relative positional relationship with the face It is a program for executing a procedure for outputting a corrected video signal obtained by correcting the video signal for each pixel.
　本発明によると、視野角特性により色変化が生じる映像を観測者の位置に応じて補正することができる。 According to the present invention, an image in which a color change is caused by the viewing angle characteristic can be corrected according to the position of the observer.
第１実施形態に係る視野角補正装置の構成の一例を説明するためのブロック図である。It is a block diagram for demonstrating an example of a structure of the viewing angle correction apparatus which concerns on 1st Embodiment. 第１実施形態に係る液晶表示装置の表示画面と人物の顔との相対的な位置関係と視野角について説明する図である。It is a figure explaining the relative positional relationship and viewing angle of the display screen of the liquid crystal display device which concern on 1st Embodiment, and a person's face. 第１実施形態に係る視野角補正方法の一例について説明するためのフローチャートである。It is a flowchart for demonstrating an example of the viewing angle correction method which concerns on 1st Embodiment. 第１実施形態においてユーザの視点位置と液晶表示装置の表示画面との相対的な位置関係の一例を説明するための図である。It is a figure for demonstrating an example of the relative positional relationship of a user's viewpoint position and the display screen of a liquid crystal display device in 1st Embodiment. 第２実施形態に係る視野角補正方法の一例を説明するための参考図である。It is a reference diagram for explaining an example of a viewing angle correction method according to the second embodiment. 第２実施形態に係る視野角補正装置の構成の一例を説明するための図である。It is a figure for demonstrating an example of a structure of the viewing angle correction apparatus which concerns on 2nd Embodiment. 第２実施形態に係る液晶表示装置の表示画面内における位置を示す情報について説明するための図である。It is a figure for demonstrating the information which shows the position in the display screen of the liquid crystal display device which concerns on 2nd Embodiment. 第３実施形態に係る視野角補正方法の一例を説明するための参考図である。It is a reference diagram for explaining an example of a viewing angle correction method according to the third embodiment. 第３実施形態に係る視野角補正方法の一例を説明するための参考図である。It is a reference diagram for explaining an example of a viewing angle correction method according to a third embodiment.
［第１実施形態］
　次に、発明を実施するための一形態について図面を参照して詳細に説明する。
　図１は、本実施形態に係る視野角補正装置１００の一例を示す図である。
　図１に示す通り、この視野角補正装置１００は、液晶表示装置２００と接続されており、この液晶表示装置２００の表示画面に対するユーザの相対的な位置に応じて、視野角特性に応じた補正を入力する映像信号に対して行い、この補正後の映像信号を液晶表示装置２００に出力する。 [First Embodiment]
Next, an embodiment for carrying out the invention will be described in detail with reference to the drawings.
FIG. 1 is a diagram illustrating an example of a viewing angle correction apparatus 100 according to the present embodiment.
As shown in FIG. 1, the viewing angle correction device 100 is connected to a liquid crystal display device 200, and the correction according to the viewing angle characteristics is performed according to the relative position of the user with respect to the display screen of the liquid crystal display device 200. Is applied to the input video signal, and the corrected video signal is output to the liquid crystal display device 200.
　以下、視野角補正装置１００の構成と機能について詳細に説明する。
　視野角補正装置１００は、入力部１０１と、検出部１０２と、記憶部１０３と、視野角補正部１０４と、出力部１０５とを備える。 Hereinafter, the configuration and function of the viewing angle correction apparatus 100 will be described in detail.
The viewing angle correction apparatus 100 includes an input unit 101, a detection unit 102, a storage unit 103, a viewing angle correction unit 104, and an output unit 105.
　入力部１０１は、入力された映像信号を所望の画質となるように処理する映像信号処理部を含む。ここで画質とは、液晶表示装置２００に表示する画像の明るさやホワイトバランス、ガンマ補正等を含む。 The input unit 101 includes a video signal processing unit that processes the input video signal so as to obtain a desired image quality. Here, the image quality includes brightness, white balance, gamma correction, and the like of an image displayed on the liquid crystal display device 200.
　検出部１０２は、液晶表示装置２００の表示画面に対する人物の顔の相対的な位置を示す相対位置情報を検出し、視野角補正部１０４に出力する。この相対位置情報について、図２を参照して詳細に説明する。
　図２は、液晶表示装置２００の表示画面と人物の顔との相対的な位置関係と視野角について説明する図である。
　図２に示す通り、液晶表示装置２００の表示画面の各ピクセルに対する人物の視点を視点Ｐとする。表示画面と顔との相対的な位置関係は、表示画面の面方向における各ピクセルを中心として視点Ｐの方向を示す方位角ψと、表示画面と直交する面における各ピクセルを中心として視点Ｐの方向を示す極角θにより表わす。
　つまり、相対位置情報は、各ピクセルと視点Ｐとの位置関係を、方位角ψおよび極角θにより表わす情報である。 The detection unit 102 detects relative position information indicating the relative position of the person's face with respect to the display screen of the liquid crystal display device 200 and outputs the relative position information to the viewing angle correction unit 104. The relative position information will be described in detail with reference to FIG.
FIG. 2 is a diagram for explaining the relative positional relationship and the viewing angle between the display screen of the liquid crystal display device 200 and a human face.
As shown in FIG. 2, a viewpoint of a person with respect to each pixel of the display screen of the liquid crystal display device 200 is a viewpoint P. The relative positional relationship between the display screen and the face includes an azimuth angle ψ indicating the direction of the viewpoint P with respect to each pixel in the plane direction of the display screen, and the viewpoint P with respect to each pixel in a plane orthogonal to the display screen. It is represented by a polar angle θ indicating the direction.
That is, the relative position information is information representing the positional relationship between each pixel and the viewpoint P by the azimuth angle ψ and the polar angle θ.
　検出部１０２は、赤外線センサ等を用いて人物の顔を検出し、液晶表示装置２００に対する人物の顔の位置を示す相対位置情報を取得する人感センサであってもよい。
　また、検出部１０２は、カメラを備え、撮影された画像データに基づきパターン認識技術を用いて人物の顔を検出し、液晶表示装置２００に対する人物の顔の位置と向きを示す相対位置情報を取得するものであってもよい。この検出部１０２は、液晶表示装置２００の表示画面と検出した人物との距離を計測する計測機を備え、当該計測された距離に基づき、相対位置情報を取得する。
　具体的には、検出部１０２は、撮影された２次元画像内の人物の顔の視点Ｐの位置を示す情報と、現実空間において当該視点Ｐに対応する物体と表示画面との距離を示す情報に基づき、３次元空間内における視点Ｐと表示画面との相対的な位置関係を示す相対位置情報を算出する。
　なお、検出部１０２は、人物の顔における予め決められた位置を視点Ｐとして決定し、相対位置情報を取得する。本実施形態において、視点Ｐは、人物の顔の両目の中間点とすることが予め決められている。 The detection unit 102 may be a human sensor that detects a person's face using an infrared sensor or the like and acquires relative position information indicating the position of the person's face with respect to the liquid crystal display device 200.
The detection unit 102 includes a camera, detects a person's face using pattern recognition technology based on the captured image data, and acquires relative position information indicating the position and orientation of the person's face with respect to the liquid crystal display device 200. You may do. The detection unit 102 includes a measuring device that measures the distance between the display screen of the liquid crystal display device 200 and the detected person, and acquires relative position information based on the measured distance.
Specifically, the detection unit 102 includes information indicating the position of the viewpoint P of the person's face in the captured two-dimensional image, and information indicating the distance between the object corresponding to the viewpoint P and the display screen in the real space. Based on the above, relative position information indicating the relative positional relationship between the viewpoint P and the display screen in the three-dimensional space is calculated.
The detection unit 102 determines a predetermined position on the face of the person as the viewpoint P, and acquires relative position information. In the present embodiment, the viewpoint P is determined in advance to be the midpoint between both eyes of a person's face.
　記憶部１０３は、液晶表示装置２００の表示画面と人物の顔との相対的な位置関係に応じて予め決められている視野角特性に基づき補正すべき色座標の補正値である視野角特性補正係数と、表示画面に対する人物の顔の相対的な位置関係を示す相対位置情報とを対応づけるテーブルを保存する。言い換えると、このテーブルは、方位角ψと極角θによって表わされる視点Ｐに応じて、当該視点Ｐに応じて各ピクセルに与えられる視野角特性補正係数を対応付けるテーブルである。
　この視野角特性補正係数は、液晶表示装置２００の視野角特性に応じて異なるものである。この視野角特性補正係数として、実際に測定した視野角特性を示す情報に基づき、視点Ｐと各画素との相対的な位置関係に応じてその視野角特性を補正する値が予め決められている。 The storage unit 103 is a viewing angle characteristic correction that is a correction value of color coordinates that should be corrected based on a viewing angle characteristic that is determined in advance according to the relative positional relationship between the display screen of the liquid crystal display device 200 and a human face. A table associating the coefficient with relative position information indicating the relative positional relationship of the person's face with respect to the display screen is stored. In other words, this table is a table that correlates the viewing angle characteristic correction coefficient given to each pixel according to the viewpoint P according to the viewpoint P represented by the azimuth angle ψ and the polar angle θ.
The viewing angle characteristic correction coefficient varies depending on the viewing angle characteristic of the liquid crystal display device 200. As the viewing angle characteristic correction coefficient, a value for correcting the viewing angle characteristic is determined in advance according to the relative positional relationship between the viewpoint P and each pixel based on information indicating the actually measured viewing angle characteristic. .
　なお、記憶部１０３は、上述の通り予め作成されたテーブルを保存しておく構成に限られず、例えば、液晶表示装置２００の表示画面に対する人物の顔の相対的な位置関係に応じて予め決められている視野角特性に基づき補正すべき色座標の補正値である視野角特性補正係数を算出する関係式を保存する構成であってもよい。この場合、視野角補正部１０４がこの関係式を参照して、検出部１０２から入力する相対位置情報の方位角ψと極角θによって表わされる視点Ｐに対応する各ピクセルに与えられる視野角特性補正係数を算出する。
　本実施形態においては、記憶部１０３が、上述のテーブルを保持している例について、以下説明する。 Note that the storage unit 103 is not limited to a configuration that stores a table created in advance as described above, and is determined in advance according to, for example, the relative positional relationship of a person's face with respect to the display screen of the liquid crystal display device 200. The relational expression for calculating the viewing angle characteristic correction coefficient, which is the correction value of the color coordinate to be corrected based on the viewing angle characteristic, may be stored. In this case, the viewing angle correction unit 104 refers to this relational expression and viewing angle characteristics given to each pixel corresponding to the viewpoint P represented by the azimuth angle ψ and polar angle θ of the relative position information input from the detection unit 102. A correction coefficient is calculated.
In the present embodiment, an example in which the storage unit 103 holds the above-described table will be described below.
　視野角補正部１０４は、液晶表示装置２００の表示画面と人物の顔との相対的な位置関係に応じて予め決められている視野角特性に基づき補正すべき色座標の補正値である視野角特性補正係数を、検出部１０２の検出した相対位置情報に基づき取得し、映像信号を補正値に基づき補正した補正映像信号を出力する。
　本実施形態において、視野角補正部１０４は、記憶部１０３を参照して、相対位置情報の方位角ψと極角θによって表わされる視点Ｐに対応する各ピクセルに与えられる視野角特性補正係数を算出する。
　　視野角補正部１０４は、入力部１０１から入力した映像信号を視野角特性補正係数に基づき補正した補正映像信号を出力部１０５に出力する。 The viewing angle correction unit 104 is a viewing angle that is a correction value of color coordinates to be corrected based on a viewing angle characteristic determined in advance according to the relative positional relationship between the display screen of the liquid crystal display device 200 and a human face. A characteristic correction coefficient is acquired based on the relative position information detected by the detection unit 102, and a corrected video signal obtained by correcting the video signal based on the correction value is output.
In the present embodiment, the viewing angle correction unit 104 refers to the storage unit 103 and calculates a viewing angle characteristic correction coefficient to be given to each pixel corresponding to the viewpoint P represented by the azimuth angle ψ and polar angle θ of the relative position information. calculate.
The viewing angle correction unit 104 outputs a corrected video signal obtained by correcting the video signal input from the input unit 101 based on the viewing angle characteristic correction coefficient to the output unit 105.
　出力部１０５は、視野角補正部１０４から出力される補正映像信号を液晶表示装置２００に出力する。
　液晶表示装置２００は、視野角補正装置１００の出力部１０５から入力する補正映像信号に基づき、表示画面と視点Ｐとの位置関係に応じて視野角が補正された映像を表示する。 The output unit 105 outputs the corrected video signal output from the viewing angle correction unit 104 to the liquid crystal display device 200.
The liquid crystal display device 200 displays an image whose viewing angle is corrected according to the positional relationship between the display screen and the viewpoint P based on the corrected video signal input from the output unit 105 of the viewing angle correction device 100.
　次に、図３を参照して、本実施形態に係る視野角補正方法の一例について説明する。
　図３は、本実施形態に係る視野角補正方法の一例について説明するためのフローチャートである。 Next, an example of the viewing angle correction method according to the present embodiment will be described with reference to FIG.
FIG. 3 is a flowchart for explaining an example of the viewing angle correction method according to the present embodiment.
（ステップＳＴ１）
　図３に示す通り、検出部１０２は、実空間中の検出エリア内に人物の顔が存在する場合、当該人物の顔が存在することを検出するとともに、この人物の顔と液晶表示装置２００の表示画面との相対的な位置関係を示す相対位置情報を算出する。
　例えば、検出部１０２は、カメラによって撮影された画像データに対してパターン認識を行い人物の顔を検出した場合、この顔に含まれる両目の中間点である視点Ｐの座標を画像内において検出する。また、検出部１０２は、検出された人物の顔と表示画面との距離を計測する計測装置から出力する情報に基づき、画像内における視点Ｐの座標の位置と表示画面との３次元空間内における位置関係を示す情報を計算により求め、視点Ｐに対する方位角ψと極角θを算出して、相対位置情報を得る。
　そして、検出部１０２は、この相対位置情報を視野角補正部１０４に出力する。 (Step ST1)
As shown in FIG. 3, when a human face is present in the detection area in the real space, the detection unit 102 detects the presence of the human face and detects the human face and the liquid crystal display device 200. Relative position information indicating a relative positional relationship with the display screen is calculated.
For example, when the detection unit 102 performs pattern recognition on the image data captured by the camera and detects a person's face, the detection unit 102 detects the coordinates of the viewpoint P, which is an intermediate point between both eyes included in the face, in the image. . In addition, the detection unit 102 is based on information output from a measurement device that measures the distance between the detected human face and the display screen, in a three-dimensional space between the position of the coordinates of the viewpoint P in the image and the display screen. Information indicating the positional relationship is obtained by calculation, and the azimuth angle ψ and polar angle θ with respect to the viewpoint P are calculated to obtain relative position information.
Then, the detection unit 102 outputs this relative position information to the viewing angle correction unit 104.
（ステップＳＴ２）
　次いで、視野角補正部１０４は、記憶部１０３を参照して、相対位置情報の方位角ψと極角θによって表わされる視点Ｐに対応する視野角特性補正係数を、画素ごとに算出する。
　視野角補正部１０４は、この視野角特性補正係数に基づき、入力部１０１から入力した映像信号の各画素に対応するホワイトバランスやガンマカーブ等の補正を行い、画素毎に視野角特性補正係数に基づく補正がなされた補正映像信号を出力部１０５に出力する。
　そして、出力部１０５は、視野角補正部１０４から出力される補正映像信号を液晶表示装置２００に出力する。
　液晶表示装置２００は、視野角補正装置１００の出力部１０５から入力する補正映像信号に基づき、表示画面と視点Ｐとの位置関係に応じて視野角が補正された映像を表示する。 (Step ST2)
Next, the viewing angle correction unit 104 refers to the storage unit 103 and calculates a viewing angle characteristic correction coefficient corresponding to the viewpoint P represented by the azimuth angle ψ and the polar angle θ of the relative position information for each pixel.
Based on this viewing angle characteristic correction coefficient, the viewing angle correction unit 104 corrects white balance, gamma curve, and the like corresponding to each pixel of the video signal input from the input unit 101, and sets the viewing angle characteristic correction coefficient for each pixel. The corrected video signal subjected to the correction based on the output is output to the output unit 105.
Then, the output unit 105 outputs the corrected video signal output from the viewing angle correction unit 104 to the liquid crystal display device 200.
The liquid crystal display device 200 displays an image whose viewing angle is corrected according to the positional relationship between the display screen and the viewpoint P based on the corrected video signal input from the output unit 105 of the viewing angle correction device 100.
　上述の通り、本願発明は、映像信号を構成する各画素の画素値に対して、視点Ｐからの方位角ψおよび極角θで示す相対位置情報に基づく視野角特性補正係数に基づく補正がなされる。これにより、視点Ｐから液晶表示装置２００の表示画面を見るユーザに対して、画素毎に視野角特性による色変化を補正した映像を表示することができる。よって、ユーザが液晶表示装置２００の表示画面のどの位置からみてもユーザの位置にあわせて視野角が補正された映像を表示させることができる。 As described above, in the present invention, the pixel value of each pixel constituting the video signal is corrected based on the viewing angle characteristic correction coefficient based on the relative position information indicated by the azimuth angle ψ and polar angle θ from the viewpoint P. The Thereby, for the user who views the display screen of the liquid crystal display device 200 from the viewpoint P, an image in which the color change due to the viewing angle characteristic is corrected for each pixel can be displayed. Therefore, it is possible to display an image in which the viewing angle is corrected according to the position of the user from any position on the display screen of the liquid crystal display device 200.
　例えば、図４に示す通り、ユーザの視点Ｐと表示画面との距離が短い場合は特に本願発明による効果のメリットが大きい。図４は、ユーザの視点位置Ｐと液晶表示装置２００の表示画面との相対的な位置関係の一例を説明するための図である。
　本実施形態に係る液晶表示装置２００は、例えば、横方向に長く縦方向に短い長方形の表示画面を有している。図４は、液晶表示装置２００を横方向が水平となるように、液晶表示装置２００を配置した場合、この液晶表示装置２００の上部から見下ろした状態を示す。 For example, as shown in FIG. 4, when the distance between the user's viewpoint P and the display screen is short, the merit of the effect of the present invention is particularly great. FIG. 4 is a diagram for explaining an example of the relative positional relationship between the user's viewpoint position P and the display screen of the liquid crystal display device 200.
The liquid crystal display device 200 according to the present embodiment has, for example, a rectangular display screen that is long in the horizontal direction and short in the vertical direction. FIG. 4 shows a state in which the liquid crystal display device 200 is looked down from above when the liquid crystal display device 200 is arranged so that the horizontal direction is horizontal.
　図４に示す液晶表示装置２００は、その表示画面の横方向の長さ（幅）が、例えば、１．７ｍである。ユーザが、その表示画面に対して、横方向の中央の位置において画面の正面に向かって立っているとする。このとき、ユーザは液晶表示装置２００から０．５ｍ離れた位置にいる。図示の通り、視点Ｐと液晶表示装置２００の端部とを結んだ場合、その角度は６０°である。つまり、液晶表示装置２００の端部に配置された画素と視点Ｐとの極角θは３０°である。
　この場合、ユーザの視点Ｐと液晶表示装置２００の表示画面の中央の位置は、その位置関係において、視野角特性による色変化が生じない。しかし、液晶表示装置２００の表示画面の端部の方では、極角θがきつくなってしまい、視野角特性による色変化が生じる。
　このような場合、表示画面の視野角特性を、ユーザの位置に応じて、全ての画素に対して一様に補正をかけたとしても、ユーザの視点Ｐに応じて全画面の表示内容の補正を適切に行うことができない。 The liquid crystal display device 200 shown in FIG. 4 has a horizontal length (width) of the display screen of 1.7 m, for example. It is assumed that the user stands toward the front of the screen at the horizontal center position with respect to the display screen. At this time, the user is at a position 0.5 m away from the liquid crystal display device 200. As shown in the figure, when the viewpoint P and the end of the liquid crystal display device 200 are connected, the angle is 60 °. That is, the polar angle θ between the pixel arranged at the end of the liquid crystal display device 200 and the viewpoint P is 30 °.
In this case, the position of the user's viewpoint P and the center position of the display screen of the liquid crystal display device 200 does not change in color due to viewing angle characteristics in the positional relationship. However, at the edge of the display screen of the liquid crystal display device 200, the polar angle θ becomes tight, and a color change occurs due to viewing angle characteristics.
In such a case, even if the viewing angle characteristics of the display screen are uniformly corrected for all pixels according to the position of the user, the display content of the entire screen is corrected according to the user's viewpoint P. Cannot be done properly.
　本願発明は、上述の通り、画素毎に視野角特性補正係数に基づく補正を相対位置情報に応じて行うため、図４に示すような場合であって、液晶表示装置２００の表示画面の端部であって、ユーザの視野角に応じて適切に補正された映像を表示することができる。
　なお、測定データによると、視野角特性が良い液晶表示装置にて全白画面の色座標を比べた場合でも、Δｘｙで約０．０１０の差が発生している。人間は、０．００３の色座標の差が知覚できることから、明確な白色のズレを認識することになる。
　これらの問題は、安価な方式の液晶表示装置の使用や、中間階調の表示などで、より顕著に現れる。これに対し、本願発明は、人感センサ等の検出部１０２により観測者の顔の位置を位置関係を示す情報を検出し、各ピクセルと観測者（視点Ｐ）との角度を計算して、表面で見たときと同じ見え方になるように色を再計算する。 Since the present invention performs correction based on the viewing angle characteristic correction coefficient for each pixel according to the relative position information as described above, the present invention is a case as shown in FIG. 4, and is the end of the display screen of the liquid crystal display device 200. Thus, it is possible to display an image that is appropriately corrected according to the viewing angle of the user.
According to the measurement data, even when the color coordinates of the all white screen are compared in a liquid crystal display device with good viewing angle characteristics, a difference of about 0.010 occurs in Δxy. Since a human can perceive a color coordinate difference of 0.003, he / she recognizes a clear white shift.
These problems appear more prominently when using inexpensive liquid crystal display devices or displaying halftones. On the other hand, the present invention detects information indicating the positional relationship of the position of the observer's face by the detection unit 102 such as a human sensor, calculates the angle between each pixel and the observer (viewpoint P), Recalculate the color so that it looks the same as it looks on the surface.
　なお、本発明に係る視野角補正装置１００は、極めて短時間に補正処理を行い、リアルタイムに近い時間差で、入力する映像信号を液晶表示装置２００に表示させることが好ましい。これにより、ユーザが表示画面の前を移動して、視点Ｐが変動する場合であっても、画素毎に視野角特性による色変化を補正した映像を表示することができる。つまり、ユーザが液晶表示装置２００の表示画面のどの位置からみてもユーザの位置にあわせて視野角が補正された映像を表示させることができる。 Note that it is preferable that the viewing angle correction apparatus 100 according to the present invention performs correction processing in an extremely short time, and displays an input video signal on the liquid crystal display device 200 with a time difference close to real time. Thereby, even when the user moves in front of the display screen and the viewpoint P fluctuates, it is possible to display an image in which the color change due to the viewing angle characteristic is corrected for each pixel. That is, it is possible to display an image whose viewing angle is corrected according to the position of the user regardless of the position on the display screen of the liquid crystal display device 200.
［第２の実施形態］
　次に、図５、６を参照して、本発明に係る第２実施形態について説明する。
　図５は、本実施形態に係る視野角補正方法の一例を説明するための参考図である。図６は、本実施形態に係る視野角補正装置１１００の構成の一例を説明するための図である。
　本実施形態では、上述した第１実施形態に係る視野角補正装置１００による視野角補正方法における視点Ｐが複数の視点Ｐ１～Ｐｎであった場合に対応して、装置構成を拡張した態様について説明する。 [Second Embodiment]
Next, a second embodiment according to the present invention will be described with reference to FIGS.
FIG. 5 is a reference diagram for explaining an example of the viewing angle correction method according to the present embodiment. FIG. 6 is a diagram for explaining an example of the configuration of the viewing angle correction apparatus 1100 according to the present embodiment.
In the present embodiment, a description will be given of an aspect in which the apparatus configuration is expanded in response to a case where the viewpoint P is a plurality of viewpoints P1 to Pn in the viewing angle correction method by the viewing angle correction apparatus 100 according to the first embodiment described above. To do.
　図５には、テーブルに埋め込まれた液晶表示装置１２００の一例を示す。この液晶表示装置１２００は、長方形の表示画面が水平方向と平行に配置されており、ユーザは、この表示画面を４方向からみることができる。この場合、一般的に液晶表示装置２００における縦方向の短辺側から見る場合の視野角特性と、横方向の長辺側から見た場合の視野角特性とは、異なる。
　ここでは、液晶表示装置１２００の表示画面の長辺側から液晶表示装置１２００の表示画面を見るユーザａに対して画像を表示する画面Ａと、液晶表示装置１２００の表示画面の短辺側から液晶表示装置１２００の表示画面を見るユーザｂに対して画像を表示する画面Ｂとを示す。 FIG. 5 shows an example of a liquid crystal display device 1200 embedded in a table. In this liquid crystal display device 1200, rectangular display screens are arranged in parallel with the horizontal direction, and the user can view the display screen from four directions. In this case, generally, the viewing angle characteristic when viewed from the short side in the vertical direction in the liquid crystal display device 200 is different from the viewing angle characteristic when viewed from the long side in the horizontal direction.
Here, the screen A that displays an image for the user a who views the display screen of the liquid crystal display device 1200 from the long side of the display screen of the liquid crystal display device 1200, and the liquid crystal from the short side of the display screen of the liquid crystal display device 1200 The screen B which displays an image with respect to the user b who sees the display screen of the display apparatus 1200 is shown.
　この場合、上述のように、ユーザの立ち位置に応じて見える画面の視野角特性が異なるため、画面Ａと画面Ｂに同じ映像を表示していたとしても、それぞれ色の見え方が異なってしまう。
　この問題に対し、第１実施形態と同様に、視野角特性補正係数による補正を画面Ａと画面Ｂのそれぞれに独立にかけることで、両者共に正面から見たときと同様な色表現を得ることができる。 In this case, as described above, since the viewing angle characteristics of the screen that can be seen differ depending on the user's standing position, even if the same image is displayed on the screen A and the screen B, the appearance of the colors is different. .
In order to solve this problem, similarly to the first embodiment, by applying the correction by the viewing angle characteristic correction coefficient to each of the screen A and the screen B independently, both can obtain the same color expression as when viewed from the front. Can do.
　次に、図６を参照して、本実施形態に係る視野角補正装置１１００の具体的な構成について説明する。
　視野角補正装置１１００は、入力部１０１と、検出部１０２と、記憶部１０３と、出力部１０５、映像分配部１０６と、画像合成回路１０７と、第１視野角補正部１４１、第２視野角補正部１４２、・・・、第Ｎ視野角補正部１４０＋Ｎとを備える。なお、第１実施形態に係る視野角補正装置１００の構成と同様の構成については、同一の符号を付して、詳細な説明は省略する。 Next, a specific configuration of the viewing angle correction apparatus 1100 according to the present embodiment will be described with reference to FIG.
The viewing angle correction apparatus 1100 includes an input unit 101, a detection unit 102, a storage unit 103, an output unit 105, a video distribution unit 106, an image synthesis circuit 107, a first viewing angle correction unit 141, and a second viewing angle. , And an Nth viewing angle correction unit 140 + N. In addition, about the structure similar to the structure of the viewing angle correction apparatus 100 which concerns on 1st Embodiment, the same code | symbol is attached | subjected and detailed description is abbreviate | omitted.
　検出部１０２は、上述と同様にして、検出エリア内に存在する人物の顔を検出するとともに、検出された顔の数を示す情報を映像分配部１０６に出力する。この検出部１０２は、検出された人物の顔のそれぞれについて相対位置情報を取得し、この検出された人物の顔に応じて生成される視野角補正部にこの相対位置情報を出力する。
　検出部１０２は、複数の視点Ｐ１～ＰＮを検出すると、各視点Ｐ１～ＰＮに対応する相対位置情報を、それぞれ、第１視野角補正部１４１、第２視野角補正部１４２、・・・、第Ｎ視野角補正部１４０＋Ｎに出力する。なお、本実施形態において、視点Ｐ１は観測者ａの視点、視点２は観測者ｂの視点である。 In the same manner as described above, the detection unit 102 detects the face of a person existing in the detection area, and outputs information indicating the number of detected faces to the video distribution unit 106. The detection unit 102 acquires relative position information for each detected human face, and outputs the relative position information to a viewing angle correction unit that is generated according to the detected human face.
When the detection unit 102 detects a plurality of viewpoints P1 to PN, the relative position information corresponding to each of the viewpoints P1 to PN is converted into the first viewing angle correction unit 141, the second viewing angle correction unit 142,. Output to the Nth viewing angle correction unit 140 + N. In this embodiment, the viewpoint P1 is the viewpoint of the observer a, and the viewpoint 2 is the viewpoint of the observer b.
　この検出部１０２は、この相対位置情報に基づき、表示画面に対して観測者がいる位置を取得し、この観測者がいる位置に応じて予め決められている表示画面内の画面を決定し、この表示画面内の画面を示す画面情報を取得する。検出部１０２は、取得した画面情報を、各視点Ｐ１～ＰＮに対応する相対位置情報とともに、それぞれ、第１視野角補正部１４１、第２視野角補正部１４２、・・・、第Ｎ視野角補正部１４０＋Ｎに出力する。 Based on the relative position information, the detection unit 102 acquires a position where the observer is present with respect to the display screen, determines a screen in the display screen that is predetermined according to the position where the observer is present, Screen information indicating a screen in the display screen is acquired. The detection unit 102 obtains the acquired screen information together with the relative position information corresponding to each of the viewpoints P1 to PN, together with the first viewing angle correction unit 141, the second viewing angle correction unit 142,. Output to the correction unit 140 + N.
　この画面情報とは、液晶表示装置１２００の表示画面内に表示される画面の位置や大きさを示す情報である。なお、この表示画面内の画面の位置は、図７に示すように、表示画面の予め決められた位置で分割する表示エリアＯ，Ｐ，Ｑ，Ｒにより示される。この表示エリアＯ～Ｒに表示される画像の向きは、表示画面の４辺のそれぞれが画面の底面と平行になるように、予め決められている。
　例えば、画面Ａを示す画面情報は、画面の底面が液晶表示装置１２００の表示画面の辺１２０１に近い位置でこの辺１２０１に平行になるように表示エリアＯに表示される画面であることを示す。また、画面Ｂを示す画面情報は、画面の底面が液晶表示装置１２００の表示画面の辺１２０２に近い位置でこの辺１２０２に平行になるように表示エリアＲに表示される画面であることを示す。 This screen information is information indicating the position and size of the screen displayed in the display screen of the liquid crystal display device 1200. Note that the position of the screen within the display screen is indicated by display areas O, P, Q, and R that are divided at predetermined positions on the display screen, as shown in FIG. The orientations of the images displayed in the display areas O to R are determined in advance so that each of the four sides of the display screen is parallel to the bottom surface of the screen.
For example, the screen information indicating the screen A indicates that the screen is displayed in the display area O so that the bottom surface of the screen is close to the side 1201 of the display screen of the liquid crystal display device 1200 and is parallel to the side 1201. The screen information indicating the screen B indicates that the screen is displayed in the display area R so that the bottom surface of the screen is parallel to the side 1202 at a position close to the side 1202 of the display screen of the liquid crystal display device 1200.
　なお、検出部１０２は、検出された人物の顔の視点Ｐ１～ＰＮにそれぞれ対応する相対位置情報を取得する際に、人物の顔の向きを示す情報を取得するものであってもよい。例えば、検出部１０２は、検出された人物の顔の視点Ｐ１～ＰＮを検出する際に、両目の並んでいる方向に基づき、人の顔の向きに応じて表示画面内の画面の向きを決定するものであってもよい。 Note that the detection unit 102 may acquire information indicating the orientation of the person's face when acquiring the relative position information corresponding to the detected viewpoints P1 to PN of the person's face. For example, when detecting the viewpoints P1 to PN of the detected human face, the detection unit 102 determines the screen orientation in the display screen according to the orientation of the human face based on the direction in which both eyes are lined up. You may do.
　映像分配部１０６は、検出部１０２から入力する検出された顔の数を示す情報に基づき、入力部１０１から入力される映像信号を検出された顔の数だけ複製（コピー）して、第１視野角補正部１４１、第２視野角補正部１４２、・・・、第Ｎ視野角補正部１４０＋Ｎに出力する。 Based on the information indicating the number of detected faces input from the detection unit 102, the video distribution unit 106 duplicates (copies) the video signal input from the input unit 101 by the number of detected faces. Output to the viewing angle correction unit 141, the second viewing angle correction unit 142,..., The Nth viewing angle correction unit 140 + N.
　第１視野角補正部１４１、第２視野角補正部１４２、・・・、第Ｎ視野角補正部１４０＋Ｎは、検出部１０２によって検出された人物の顔の数だけ、視野角補正装置１１００によって生成される処理構成部であって、本実施形態において、Ｎ個の人物の顔が検出部１０２によって検出された例を示す。 The first viewing angle correction unit 141, the second viewing angle correction unit 142,..., The Nth viewing angle correction unit 140 + N are generated by the viewing angle correction device 1100 by the number of human faces detected by the detection unit 102. In this embodiment, an example in which the faces of N persons are detected by the detection unit 102 is shown.
　第１視野角補正部１４１は、視点Ｐ１に対応する相対位置情報と、この視点Ｐ１（相対位置情報）に対応する画面情報とを検出部１０２から入力する。この第１視野角補正部１４１は、液晶表示装置１２００の表示画面と人物の顔との相対的な位置関係に応じて予め決められている視野角特性に基づき補正すべき色座標の補正値である視野角特性補正係数を、記憶部１０３を参照して検出部１０２の検出した相対位置情報に基づき取得する。この第１視野角補正部１４１は、この相対位置情報に基づき映像信号を補正した第１補正映像信号に、検出部１０２から入力される画面情報を対応付けて画像合成部１０７に出力する。
　つまり、第１視野角補正部１４１は、観測者ａの視点Ｐ１に対応する視野角特性に応じた補正を映像信号に対して行い、この画面Ａを示す画面情報を補正後の映像信号に対応付けて画像合成部１０７に出力する。 The first viewing angle correction unit 141 inputs relative position information corresponding to the viewpoint P1 and screen information corresponding to the viewpoint P1 (relative position information) from the detection unit 102. The first viewing angle correction unit 141 is a correction value of color coordinates to be corrected based on a viewing angle characteristic determined in advance according to the relative positional relationship between the display screen of the liquid crystal display device 1200 and the human face. A certain viewing angle characteristic correction coefficient is acquired based on the relative position information detected by the detection unit 102 with reference to the storage unit 103. The first viewing angle correction unit 141 associates screen information input from the detection unit 102 with the first corrected video signal obtained by correcting the video signal based on the relative position information, and outputs the first correction video signal to the image synthesis unit 107.
That is, the first viewing angle correction unit 141 performs correction on the video signal according to the viewing angle characteristic corresponding to the viewpoint P1 of the observer a, and corresponds the screen information indicating the screen A to the corrected video signal. And output to the image composition unit 107.
　また、第２視野角補正部１４２は、視点Ｐ２に対応する相対位置情報と、この視点Ｐ２（相対位置情報）に対応する画面情報とを検出部１０２から入力する。この第２視野角補正部１４２は、液晶表示装置１２００の表示画面と人物の顔との相対的な位置関係に応じて予め決められている視野角特性に基づき補正すべき色座標の補正値である視野角特性補正係数を、記憶部１０３を参照して検出部１０２の検出した相対位置情報に基づき取得する。この第２視野角補正部１４２は、この相対位置情報に基づき映像信号を補正した第２補正映像信号を画像合成部１０７に出力する。
　つまり、第２視野角補正部１４２は、観測者ｂの視点Ｐ２に対応する視野角特性に応じた補正を映像信号に対して行い、この画面Ｂを示す画面情報を補正後の映像信号に対応付けて画像合成部１０７に出力する。 In addition, the second viewing angle correction unit 142 inputs relative position information corresponding to the viewpoint P2 and screen information corresponding to the viewpoint P2 (relative position information) from the detection unit 102. The second viewing angle correction unit 142 is a correction value of color coordinates to be corrected based on a viewing angle characteristic determined in advance according to the relative positional relationship between the display screen of the liquid crystal display device 1200 and a human face. A certain viewing angle characteristic correction coefficient is acquired based on the relative position information detected by the detection unit 102 with reference to the storage unit 103. The second viewing angle correction unit 142 outputs a second corrected video signal obtained by correcting the video signal based on the relative position information to the image synthesis unit 107.
That is, the second viewing angle correction unit 142 performs correction according to the viewing angle characteristic corresponding to the viewpoint P2 of the observer b on the video signal, and the screen information indicating the screen B corresponds to the corrected video signal. And output to the image composition unit 107.
　画像合成回路１０７は、第１視野角補正部１４１、第２視野角補正部１４２、・・・、第Ｎ視野角補正部１４０＋Ｎから入力する画面情報が対応付けられた補正後の映像信号に基づき、それぞれの視野角補正部によって補正された映像を合成して、液晶表示装置１２００の表示画面に表示させるデータを作成する。言い換えると、この画像合成回路１０７は、それぞれの画面情報が示す液晶表示装置２００の表示画面内の画面に、各視野角補正部によって補正された映像を表示するデータを作成し、出力部１０５に出力する。 The image composition circuit 107 is based on the corrected video signal associated with the screen information input from the first viewing angle correction unit 141, the second viewing angle correction unit 142,..., The Nth viewing angle correction unit 140 + N. The images corrected by the respective viewing angle correction units are combined to create data to be displayed on the display screen of the liquid crystal display device 1200. In other words, the image composition circuit 107 creates data for displaying the video corrected by each viewing angle correction unit on the screen in the display screen of the liquid crystal display device 200 indicated by each screen information, and outputs the data to the output unit 105. Output.
　本実施形態において、画像合成回路１０７は、第１補正映像信号に基づく映像を画面Ａに表示させるとともに、第２補正映像信号に基づく映像を画面Ｂに表示させるデータを作成し、出力部１０５に出力する。
　出力部１０５は、この画像合成部１０７から入力するデータに基づき、画面Ａと画面Ｂに、それぞれ観測者ａの視点Ｐ１と観測者ｂのＰ２に応じた視野角特性に応じて補正された映像を液晶表示装置１２００に表示させる。 In the present embodiment, the image composition circuit 107 generates data for displaying the video based on the first corrected video signal on the screen A and displaying the video based on the second corrected video signal on the screen B, and outputs the data to the output unit 105. Output.
Based on the data input from the image composition unit 107, the output unit 105 displays images corrected on the screen A and the screen B according to the viewing angle characteristics according to the viewpoint P1 of the observer a and P2 of the observer b, respectively. Is displayed on the liquid crystal display device 1200.
　上述の通り、本実施形態に係る視野角補正装置１１００は、液晶表示装置１２００の表示画面に対するユーザの位置に応じた視野角特性で補正することにより、異なる位置から見るユーザに対して、適切な色で表現された映像を表示することができる。
　これにより、縦方向の短辺側から見る場合の視野角特性と、横方向の長辺側から見た場合の視野角特性とが異なる一般的な液晶表示装置においても、ユーザの位置に応じて視野角特性の補正を行った映像を表示することができる。 As described above, the viewing angle correction apparatus 1100 according to the present embodiment corrects the viewing angle characteristics according to the position of the user with respect to the display screen of the liquid crystal display device 1200, so that the viewing angle correction apparatus 1100 can An image expressed in color can be displayed.
As a result, even in a general liquid crystal display device in which the viewing angle characteristics when viewed from the short side in the vertical direction and the viewing angle characteristics when viewed from the long side in the horizontal direction are different, depending on the position of the user An image with the corrected viewing angle characteristic can be displayed.
　なお、観測者の人数および表示画面内の画面の枚数は問わず、２組以上（Ｎ）でも可能とする。また、表示される映像についても、同一の映像ソースか、異なる映像ソースの組合せとするかは問わない。つまり、同一の映像データを映像分配部１０６が複製して分配するのではなく、入力部１０１から入力する映像データを当該映像データに対応付けられた画面情報や入力するタイミングに応じて予め決められている第１視野角補正部１４１、第２視野角補正部１４２、・・・、第Ｎ視野角補正部１４０＋Ｎのうちの任意の視野角補正部に対して、映像分配部１０６が当該映像データを分配するものであってもよい。 It should be noted that the number of observers and the number of screens in the display screen are not limited, and two or more sets (N) are possible. Further, the displayed video may be the same video source or a combination of different video sources. In other words, the video distribution unit 106 does not duplicate and distribute the same video data, but the video data input from the input unit 101 is determined in advance according to screen information associated with the video data and input timing. The video distribution unit 106 supplies the video data to an arbitrary viewing angle correction unit among the first viewing angle correction unit 141, the second viewing angle correction unit 142,..., The Nth viewing angle correction unit 140 + N. May be distributed.
　視点が複数の場合、そのうちの１つの視点について視野角特性による補正を行った場合、視聴位置を固定してしまう。このため、その他の位置から見た場合は色の見え方が破綻してしまう。例えば姿勢を変えた場合、あるいは、第三者から見た場合は、本来表現されるべき色表示を確認できない場合がある。
　本実施形態によれば、「視聴位置の自由度」および「２つ以上の視点を考慮できない」という課題を解決することができる。 When there are a plurality of viewpoints, the viewing position is fixed when one of the viewpoints is corrected by the viewing angle characteristic. For this reason, when viewed from other positions, the color appearance is broken. For example, when the posture is changed or viewed from a third party, the color display that should be originally expressed may not be confirmed.
According to the present embodiment, it is possible to solve the problems of “degree of freedom of viewing position” and “cannot consider two or more viewpoints”.
［第３実施形態］
　次に、図８を参照して、本発明に係る第３実施形態について説明する。
　図８は、本実施形態に係る視野角補正方法の一例を説明するための参考図である。
　本実施形態では、上述した第１実施形態に係る視野角補正装置１００による視野角補正方法における視点Ｐが複数の視点Ｐ１～Ｐｎであった場合に対応して、装置構成を拡張した態様について説明する。
　なお、本実施形態は、第２実施形態を更に拡張し、観測者にアクティブなシャッター機能を持つメガネを持たせる場合についての実施形態である。 [Third Embodiment]
Next, a third embodiment according to the present invention will be described with reference to FIG.
FIG. 8 is a reference diagram for explaining an example of the viewing angle correction method according to the present embodiment.
In the present embodiment, a description will be given of an aspect in which the apparatus configuration is expanded in response to a case where the viewpoint P is a plurality of viewpoints P1 to Pn in the viewing angle correction method by the viewing angle correction apparatus 100 according to the first embodiment described above. To do.
Note that this embodiment is an embodiment in which the second embodiment is further expanded and the observer has glasses having an active shutter function.
　観測者のメガネのシャッターと、表示装置の表示画面で同期を取り、観測者ごとの画面表示を人数分で時分割表示させる。その際に、観測者ごとに最適な視野角補正を行った映像を表示させる。
　第２実施形態では、画面表示を他の観測者の画面表示と重ならないように配置する必要があったが、この方式では時間で区切って交互に表示させるため、自由に配置することが可能になる。 The shutter of the observer's glasses and the display screen of the display device are synchronized, and the screen display for each observer is displayed in a time-sharing manner for the number of people. At that time, an image with optimum viewing angle correction is displayed for each observer.
In the second embodiment, it is necessary to arrange the screen display so that it does not overlap with the screen display of other observers. In this method, however, it is possible to arrange the screen display freely because it is displayed alternately by dividing time. Become.
　図８Ａは、観測者ａのメガネのシャッターがＯＮのときの液晶表示装置１２００の表示画面を示す。つまり、観測者ａが液晶表示装置１２００の表示画面をみることができるタイミングにおいて、液晶表示装置１２００の表示画面には、画面Ａ´に対応する画像が表示されている。
　図８Ｂは、観測者ｂのメガネのシャッターがＯＮのときの液晶表示装置１２００の表示画面を示す。つまり、観測者ｂが液晶表示装置１２００の表示画面をみることができるタイミングにおいて、液晶表示装置１２００の表示画面には、画面Ｂ´に対応する画像が表示されている。 FIG. 8A shows a display screen of the liquid crystal display device 1200 when the shutter of the glasses of the observer a is ON. That is, at the timing when the observer a can view the display screen of the liquid crystal display device 1200, an image corresponding to the screen A ′ is displayed on the display screen of the liquid crystal display device 1200.
FIG. 8B shows a display screen of the liquid crystal display device 1200 when the shutter of the eyeglasses of the observer b is ON. That is, at the timing at which the observer b can see the display screen of the liquid crystal display device 1200, an image corresponding to the screen B ′ is displayed on the display screen of the liquid crystal display device 1200.
　なお、視野角補正装置１１００としては、第２実施形態において説明した装置を利用することができる。また、本実施形態において、複数の視点Ｐ１とＰ２が検出部１０２によって検出した例について説明する。本実施形態に係る視野角補正装置１１００は、視点の数に応じて映像を表示するタイミングをずらしているため、視点の数が少ない場合に適している。 As the viewing angle correction device 1100, the device described in the second embodiment can be used. In the present embodiment, an example in which a plurality of viewpoints P1 and P2 are detected by the detection unit 102 will be described. The viewing angle correction apparatus 1100 according to this embodiment is suitable for a case where the number of viewpoints is small because the timing for displaying an image is shifted according to the number of viewpoints.
　本実施形態において、視野角補正装置１１００は、検出部１０２によって視点Ｐ１とＰ２が検出された場合、第１視野角補正部１４１に対して、観測者ａの視点Ｐ１に応じた視野角特性の補正を行った第１補正映像信号を作成させる。また、視野角補正装置１１００は、第２視野角補正部１４２に対して、観測者ｂの視点Ｐ２に応じた視野角特性の補正を行った第２補正映像信号を作成させる。 In the present embodiment, when the viewpoints P1 and P2 are detected by the detection unit 102, the viewing angle correction apparatus 1100 has a viewing angle characteristic corresponding to the viewpoint P1 of the observer a with respect to the first viewing angle correction unit 141. A corrected first corrected video signal is generated. In addition, the viewing angle correction apparatus 1100 causes the second viewing angle correction unit 142 to generate a second corrected video signal in which the viewing angle characteristics are corrected according to the viewpoint P2 of the observer b.
　そして、画像合成回路１０７は、入力する第１補正映像信号と第２補正映像信号とを、同一画面内に表示させるような合成処理をすることなく、出力部１０５に出力する。
　出力部１０５は、奇数フレーム時において、第１補正映像信号を液晶表示装置１２００の画面Ａ´に表示するように液晶表示装置１２００に制御するとともに、偶数フレーム時において、第２補正映像信号を液晶表示装置１２００の画面Ｂ´に表示するように液晶表示装置１２００に制御する。なお、本実施形態において、画面Ａ´は、映像信号が示す映像サイズを拡大した場合に液晶表示装置１２００の表示画面に表示できる最大の大きさの画面であって、全面である。また、画面Ｂ´も同様に、映像信号が示す映像サイズを拡大した場合に液晶表示装置１２００の表示画面に表示できる最大の大きさの画面である。 Then, the image synthesis circuit 107 outputs the input first corrected video signal and second corrected video signal to the output unit 105 without performing a synthesis process for displaying the same on the same screen.
The output unit 105 controls the liquid crystal display device 1200 to display the first corrected video signal on the screen A ′ of the liquid crystal display device 1200 in the odd-numbered frame, and the second corrected video signal in the liquid crystal display device 1200 in the even-numbered frame. The liquid crystal display device 1200 is controlled to display on the screen B ′ of the display device 1200. In the present embodiment, the screen A ′ is the maximum screen that can be displayed on the display screen of the liquid crystal display device 1200 when the video size indicated by the video signal is enlarged, and is the entire screen. Similarly, the screen B ′ is the largest screen that can be displayed on the display screen of the liquid crystal display device 1200 when the video size indicated by the video signal is enlarged.
　また、上述の視野角補正装置１００、１１００の各構成における動作の過程は、コンピュータに実行させるためのプログラムや、このプログラムとしてコンピュータ読み取り可能な記録媒体として利用可能であり、コンピュータシステムが読み出して実行することによって、上記処理が行われる。なお、ここでいう「コンピュータシステム」とは、ＣＰＵ及び各種メモリやＯＳ、周辺機器等のハードウェアを含むものである。
　また、「コンピュータシステム」は、ＷＷＷシステムを利用している場合であれば、ホームページ提供環境（あるいは表示環境）も含むものとする。
　また、「コンピュータ読み取り可能な記録媒体」とは、フレキシブルディスク、光磁気ディスク、ＲＯＭ、フラッシュメモリー等の書き込み可能な不揮発性メモリ、ＣＤ－ＲＯＭ等の可搬媒体、コンピュータシステムに内蔵されるハードディスク等の記憶装置のことをいう。 In addition, the operation process in each configuration of the above-described viewing angle correction apparatuses 100 and 1100 can be used as a program to be executed by a computer or a computer-readable recording medium as the program, and is read and executed by the computer system. Thus, the above process is performed. The “computer system” here includes a CPU, various memories, an OS, and hardware such as peripheral devices.
Further, the “computer system” includes a homepage providing environment (or display environment) if a WWW system is used.
The “computer-readable recording medium” means a flexible disk, a magneto-optical disk, a ROM, a writable nonvolatile memory such as a flash memory, a portable medium such as a CD-ROM, a hard disk built in a computer system, etc. This is a storage device.
　さらに「コンピュータ読み取り可能な記録媒体」とは、インターネット等のネットワークや電話回線等の通信回線を介してプログラムが送信された場合のサーバやクライアントとなるコンピュータシステム内部の揮発性メモリ（例えばＤＲＡＭ（Ｄｙｎａｍｉｃ　Ｒａｎｄａｍ　Ａｃｃｅｓｓ　Ｍｅｍｏｒｙ））のように、一定時間プログラムを保持しているものも含むものとする。
　また、上記プログラムは、このプログラムを記憶装置等に記憶したコンピュータシステムから、伝送媒体を介して、あるいは、伝送媒体中の伝送波により他のコンピュータシステムに伝送されてもよい。ここで、プログラムを伝送する「伝送媒体」は、インターネット等のネットワーク（通信網）や電話回線等の通信回線（通信線）のように情報を伝送する機能を有する媒体のことをいう。
　また、上記プログラムは、前述した機能の一部を実現するためのものであっても良い。さらに、前述した機能をコンピュータシステムに既に記録されているプログラムとの組合せで実現できるもの、いわゆる差分ファイル（差分プログラム）であっても良い。 Further, the “computer-readable recording medium” refers to a volatile memory (for example, DRAM (Dynamic) in a computer system serving as a server or a client when a program is transmitted via a network such as the Internet or a communication line such as a telephone line. Randam Access Memory)) that holds a program for a certain period of time is also included.
The program may be transmitted from a computer system storing the program in a storage device or the like to another computer system via a transmission medium or by a transmission wave in the transmission medium. Here, the “transmission medium” for transmitting the program refers to a medium having a function of transmitting information, such as a network (communication network) such as the Internet or a communication line (communication line) such as a telephone line.
The program may be for realizing a part of the functions described above. Furthermore, what can implement | achieve the function mentioned above in combination with the program already recorded on the computer system, and what is called a difference file (difference program) may be sufficient.
　１００・・・視野角補正装置、１０１・・・入力部、１０２・・・検出部、１０３・・・記憶部、１０４・・・視野角補正部、１０５・・・出力部、１０６・・・映像分配部、１０７・・・画像合成回路、１４１・・・第１視野角補正部、１４２・・・第２視野角補正部、１４０＋Ｎ・・・第Ｎ視野角補正部、２００・・・液晶表示装置、１１００・・・視野角補正装置、１２００・・・液晶表示装置 DESCRIPTION OF SYMBOLS 100 ... Viewing angle correction apparatus, 101 ... Input part, 102 ... Detection part, 103 ... Memory | storage part, 104 ... Viewing angle correction part, 105 ... Output part, 106 ... Image distribution unit, 107... Image composition circuit, 141... First viewing angle correction unit, 142... Second viewing angle correction unit, 140 + N... Nth viewing angle correction unit, 200. Display device, 1100 ... viewing angle correction device, 1200 ... liquid crystal display device

Claims (6)

  1. 　液晶表示装置に表示させる映像信号を入力する入力部と、
    　検出エリア内に存在する人物の顔を検出し、前記液晶表示装置の表示画面と前記顔との相対的な位置関係を示す相対位置情報を検出する検出部と、
    　前記液晶表示装置の表示画面と前記顔との相対的な位置関係に応じた視野角特性に基づき補正すべき色座標の補正値を、当該補正値を記憶する記憶部を参照して、前記相対位置情報に基づき取得し、前記顔との相対的な位置関係に応じた前記補正値に基づき前記映像信号を各画素毎に補正した補正映像信号を出力する視野角補正部と、
    　を備えることを特徴とする視野角補正装置。     An input unit for inputting a video signal to be displayed on the liquid crystal display device;
    A detection unit for detecting a human face existing in a detection area and detecting relative position information indicating a relative positional relationship between the display screen of the liquid crystal display device and the face;
    The correction value of the color coordinate to be corrected based on the viewing angle characteristic according to the relative positional relationship between the display screen of the liquid crystal display device and the face is referred to the storage unit storing the correction value, and the relative A viewing angle correction unit that outputs a corrected video signal obtained by correcting the video signal for each pixel based on the correction value based on the correction value according to the relative positional relationship with the face;
    A viewing angle correction apparatus comprising:
  2. 　前記視野角補正部は、
    　前記検出部が複数の人物の顔を検出した場合、前記液晶表示装置の表示画面と各顔との相対的な位置関係を示す相対位置情報を前記検出された顔ごとに入力し、各相対位置情報に基づき、前記検出された顔との相対的な位置関係に応じた前記補正値に基づき前記映像信号を各画素毎に補正した補正映像信号を前記検出された顔ごとに作成し、当該補正映像信号が示す画像を、前記検出された顔の位置に対応する前記液晶表示装置の表示画面内に表示させることを特徴とする請求項１に記載の視野角補正装置。     The viewing angle correction unit
    When the detection unit detects a plurality of human faces, the relative position information indicating the relative positional relationship between the display screen of the liquid crystal display device and each face is input for each detected face, and each relative position is input. Based on the information, a corrected video signal obtained by correcting the video signal for each pixel based on the correction value corresponding to the relative positional relationship with the detected face is created for each detected face, and the correction is performed. 2. The viewing angle correction device according to claim 1, wherein an image indicated by a video signal is displayed in a display screen of the liquid crystal display device corresponding to the detected face position.
  3. 　前記視野角補正部は、
    　前記検出された顔ごとに作成した複数の補正映像信号が示す画像を、前記液晶表示装置の画面内に同時に表示することを特徴とする請求項２に記載の視野角補正装置。     The viewing angle correction unit
    3. The viewing angle correction device according to claim 2, wherein images indicated by a plurality of corrected video signals created for each detected face are simultaneously displayed in a screen of the liquid crystal display device.
  4. 　前記視野角補正部は、
    　前記検出された顔ごとに作成した複数の補正映像信号が示す画像を、前記液晶表示装置の画面内に、異なるタイミングで表示することを特徴とする請求項２に記載の視野角補正装置。     The viewing angle correction unit
    3. The viewing angle correction device according to claim 2, wherein images indicated by a plurality of corrected video signals created for each detected face are displayed at different timings on a screen of the liquid crystal display device.
  5. 　液晶表示装置に表示させる映像信号を入力し、
    　検出エリア内に存在する人物の顔を検出し、
    　前記液晶表示装置の表示画面と前記顔との相対的な位置関係を示す相対位置情報を検出し、
    　前記液晶表示装置の表示画面と前記顔との相対的な位置関係に応じた視野角特性に基づき補正すべき色座標の補正値を、当該補正値を記憶する記憶部を参照して、前記相対位置情報に基づき取得し、
    　前記顔との相対的な位置関係に応じた前記補正値に基づき前記映像信号を各画素毎に補正した補正映像信号を出力する
    　ことを特徴とする視野角補正方法。     Input the video signal to be displayed on the liquid crystal display,
    Detect human faces in the detection area,
    Detecting relative position information indicating a relative positional relationship between the display screen of the liquid crystal display device and the face;
    The correction value of the color coordinate to be corrected based on the viewing angle characteristic according to the relative positional relationship between the display screen of the liquid crystal display device and the face is referred to the storage unit storing the correction value, and the relative Based on location information,
    A viewing angle correction method comprising: outputting a corrected video signal obtained by correcting the video signal for each pixel based on the correction value corresponding to the relative positional relationship with the face.
  6. 　コンピュータに、
    　液晶表示装置に表示させる映像信号を入力する手順、
    　検出エリア内に存在する人物の顔を検出する手順、
    　前記液晶表示装置の表示画面と前記顔との相対的な位置関係を示す相対位置情報を検出する手順、
    　前記液晶表示装置の表示画面と前記顔との相対的な位置関係に応じた視野角特性に基づき補正すべき色座標の補正値を、当該補正値を記憶する記憶部を参照して、前記相対位置情報に基づき取得する手順、
    　前記顔との相対的な位置関係に応じた前記補正値に基づき前記映像信号を各画素毎に補正した補正映像信号を出力する手順、
    　を実行させるためのプログラム。     On the computer,
    A procedure for inputting a video signal to be displayed on a liquid crystal display device;
    Procedures for detecting the faces of people in the detection area,
    A procedure for detecting relative position information indicating a relative positional relationship between a display screen of the liquid crystal display device and the face;
    The correction value of the color coordinate to be corrected based on the viewing angle characteristic according to the relative positional relationship between the display screen of the liquid crystal display device and the face is referred to the storage unit storing the correction value, and the relative Procedure to acquire based on location information,
    A procedure of outputting a corrected video signal obtained by correcting the video signal for each pixel based on the correction value according to the relative positional relationship with the face;
    A program for running
PCT/JP2011/065676 2011-07-08 2011-07-08 Viewing angle correction device, viewing angle correction method, and viewing angle correction program WO2013008282A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/JP2011/065676 WO2013008282A1 (en) 2011-07-08 2011-07-08 Viewing angle correction device, viewing angle correction method, and viewing angle correction program

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2011/065676 WO2013008282A1 (en) 2011-07-08 2011-07-08 Viewing angle correction device, viewing angle correction method, and viewing angle correction program

Publications (1)

Publication Number Publication Date
WO2013008282A1 true WO2013008282A1 (en) 2013-01-17

Family

ID=47505604

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2011/065676 WO2013008282A1 (en) 2011-07-08 2011-07-08 Viewing angle correction device, viewing angle correction method, and viewing angle correction program

Country Status (1)

Country Link
WO (1) WO2013008282A1 (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2013236351A (en) * 2012-05-11 2013-11-21 Sharp Corp Image processing device, display device including the same, and image processing method
EP3207694A1 (en) * 2014-10-16 2017-08-23 Continental Automotive GmbH Method for operating a display device, arrangement, and motor vehicle
CN111724693A (en) * 2020-07-13 2020-09-29 杭州海康威视数字技术股份有限公司 Splicing display method, device, equipment and system, terminal equipment and display unit
WO2021118575A1 (en) * 2019-12-12 2021-06-17 Google Llc Viewing-angle-dependent color/brightness correction for display system
CN113141512A (en) * 2020-01-17 2021-07-20 蒋兴德 Video anchor picture detection system

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06175631A (en) * 1992-12-02 1994-06-24 Sega Enterp Ltd Time-division image reproduction system
JP2006276692A (en) * 2005-03-30 2006-10-12 Fujitsu Ltd High-picture quality reproducing apparatus for viewing-angle dependent display device
JP2007292810A (en) * 2006-04-20 2007-11-08 Matsushita Electric Ind Co Ltd Display device
JP2010273013A (en) * 2009-05-20 2010-12-02 Sony Corp Stereoscopic display device and method

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06175631A (en) * 1992-12-02 1994-06-24 Sega Enterp Ltd Time-division image reproduction system
JP2006276692A (en) * 2005-03-30 2006-10-12 Fujitsu Ltd High-picture quality reproducing apparatus for viewing-angle dependent display device
JP2007292810A (en) * 2006-04-20 2007-11-08 Matsushita Electric Ind Co Ltd Display device
JP2010273013A (en) * 2009-05-20 2010-12-02 Sony Corp Stereoscopic display device and method

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2013236351A (en) * 2012-05-11 2013-11-21 Sharp Corp Image processing device, display device including the same, and image processing method
EP3207694A1 (en) * 2014-10-16 2017-08-23 Continental Automotive GmbH Method for operating a display device, arrangement, and motor vehicle
EP3207694B1 (en) * 2014-10-16 2023-09-13 Continental Automotive Technologies GmbH Method for operating a display device, arrangement, and motor vehicle
WO2021118575A1 (en) * 2019-12-12 2021-06-17 Google Llc Viewing-angle-dependent color/brightness correction for display system
CN113272883A (en) * 2019-12-12 2021-08-17 谷歌有限责任公司 Viewing angle dependent color/brightness correction for display systems
US11887550B2 (en) 2019-12-12 2024-01-30 Google Llc Viewing-angle-dependent color/brightness correction for display system
CN113141512A (en) * 2020-01-17 2021-07-20 蒋兴德 Video anchor picture detection system
CN113141512B (en) * 2020-01-17 2022-06-21 深圳市天盈互动网络技术有限公司 Video anchor picture detection system
CN111724693A (en) * 2020-07-13 2020-09-29 杭州海康威视数字技术股份有限公司 Splicing display method, device, equipment and system, terminal equipment and display unit

Similar Documents

Publication Publication Date Title
US10078367B2 (en) Stabilization plane determination based on gaze location
JP5239326B2 (en) Image signal processing apparatus, image signal processing method, image projection system, image projection method and program
US9747726B2 (en) Late stage reprojection
US9978180B2 (en) Frame projection for augmented reality environments
US10623721B2 (en) Methods and systems for multiple access to a single hardware data stream
US9886552B2 (en) System and method for image registration of multiple video streams
US8189035B2 (en) Method and apparatus for rendering virtual see-through scenes on single or tiled displays
KR102223792B1 (en) Apparatus and method for correcting image distortion, curved display device including the same
US10502967B2 (en) Method for rendering three-dimensional image, imaging method and system
US20150002542A1 (en) Reprojection oled display for augmented reality experiences
US10235806B2 (en) Depth and chroma information based coalescence of real world and virtual world images
US9467685B2 (en) Enhancing the coupled zone of a stereoscopic display
WO2013008282A1 (en) Viewing angle correction device, viewing angle correction method, and viewing angle correction program
US10606347B1 (en) Parallax viewer system calibration
CN103533340A (en) Naked eye 3D (three-dimensional) playing method of mobile terminal and mobile terminal
US8094148B2 (en) Texture processing apparatus, method and program
MX2022005806A (en) Method for displaying objects, electronic device, and storage medium.
JP5478357B2 (en) Display device and display method
US20100123716A1 (en) Interactive 3D image Display method and Related 3D Display Apparatus
JP2018500690A (en) Method and system for generating magnified 3D images
JP2013120347A (en) Image display system and image display method
KR20110025083A (en) Apparatus and method for displaying 3d image in 3d image system
US11144194B2 (en) Interactive stereoscopic display and interactive sensing method for the same
US9269177B2 (en) Method for processing image and apparatus for processing image
TWI771969B (en) Method for rendering data of a three-dimensional image adapted to eye position and a display system

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 11869232

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 11869232

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: JP