Classifications

• • H—ELECTRICITY
  • H04—ELECTRIC COMMUNICATION TECHNIQUE
  • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
  • H04N13/00—Stereoscopic video systems; Multi-view video systems; Details thereof
  • H04N13/10—Processing, recording or transmission of stereoscopic or multi-view image signals
  • H04N13/106—Processing image signals
• • H—ELECTRICITY
  • H04—ELECTRIC COMMUNICATION TECHNIQUE
  • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
  • H04N2213/00—Details of stereoscopic systems
  • H04N2213/007—Aspects relating to detection of stereoscopic image format, e.g. for adaptation to the display format

Definitions

• the present invention relates to a display device comprising a control unit.
• 3d image sources are becoming widespread along with the development in technologies enabling 3d image displaying. These sources produce 3d image by using imaging methods such as side-by-side image, one-over-the-other image, multiple images.
• the control unit of the display device process the image directly according to the proper format and transmits it to the screen.
• the format information of the image cannot be sent together with the image signal due to low bandwidth problem and the selection of the image format is left to the user.
• the image is wrongly transmitted to the screen.
• the state of the art embodiments to solve this problem require high processing power and since they do not give precise results, they do not meet the needs of the user completely.
• a display device comprising a control unit that divides the image into a number of pieces, computes the correlation between the data on these pieces and determines the image format according to the correlation rate.
• the aim of the present invention is the realization of a display device that determines the image format in a fast and proper way.
• a control unit is disposed, that performs row-scanning and column-scanning processes.
• control unit After determining the resolution of the image, the control unit determines the horizontal and vertical central points of the image and decides if there is an edge in the vicinity of these points in order to determine the one-over-the-other or side-by-side 3d image.
• the control unit decides that the image is not a side-by-side 3d image.
• the control unit decides that the image is not a one-over-the-other 3d image.
• information on which one of the row- and column-scanning processes should be performed before the other according to the resolution of the image is saved in the memory of the control unit.
• the resolution of the image is 1920x1080
• the row-scanning process is performed
• it is 1280x720 the column-scanning process is performed.
• control unit scans the consecutive rows during the row-scanning process and the consecutive columns during the column-scaning process.
• the process speed is increased.
• control unit decides that the image is 2d, upon detecting that no edge passes through the central points of the image in the horizontal and vertical directions at the end of the row-scanning and the column-scanning processes. Since, especially in case that the image received from image sources having low bandwidth is 3d, the image is expected to have one of the side-by-side or one-over-the-other 3d image formats, a high-precision format detection is realized by deciding that the image is 2d in case that it does not have any of these formats.
• the control unit leaves the selection of image format to the user, upon detecting that no edge passes through the central points of the image in the horizontal and vertical directions at the end of the row-scanning and the column-scanning processes. Since, in images having high bandwidth, received from devices such as blue laser player, 3d imagining methods such as multiple image that cannot be fitted into low bandwidth can be used, in such cases, that the image does not have any one of the side-by-side or one-over-the-other 3d image formats does not mean that the image is 2d and thus the selection of the format is left to the user. Thus, the image is prevented from being transmitted to the screen in a wrong format.
• the format of the image received from the image source can be determined.
• Figure 1- is the perspective view of a display device.
• S Image source
• Row number C Column number
• d Difference between the color values of two consecutive pixels
• D A threshold value predetermined by the producer
• n Ratio of the rows/columns, whereof the difference (d) between the color values of two consecutive pixels thereof is higher that a threshold value (D) predetermined by the producer, among the rows/columns whereof the color values are being controlled N.
• a ratio predetermined by the producer b. The ratio of the number of pixel pairs in the most-encountered position to the total number of pixel pairs B.
• the display device (1) comprises a screen (2) and a control unit (3) that processes the image received from the image source (S) and transmits it to the screen (2) ( Figure 1).
• control unit (3) determines the row number (R) and the column number (C) in the image signal, and performs
• the control unit (3) first, calculates the resolution (CxR) and the central points in the horizontal and the vertical directions of the image by determining the number of rows (R) and the number of columns (C) in the image received. For example, the resolution of an image containing 1920 columns and 1080 rows is 1920x1080 and the horizontal central point thereof is between the 960th and 961st columns and the vertical central point between the 540th and 541st rows. Afterwards, the control unit (3) determines a pixel group containing the central points of the rows (R 1 , R 2 , R 3 ,...) and/or the columns (C 1 , C 2 , C 3 ,...) predetermined by the producer in order to perform the row-scanning process and/or the column-scanning process.
• a group is selected, starting from a position, a number of pixels predetermined by the producer before the central point and ending at a position, a number of pixels predetermined by the producer after the central point. For example, the pixels between the 956th and the 965th pixels from left to right of the rows (R 1 , R 2 , R 3 ,%) predetermined by the producer and the pixels between the 536th and the 545th pixels from top to bottom of the columns (C 1 , C 2 , C 3 ,...) predetermined by the producer are selected.
• control unit (3) can decide if there is an edge intersecting the image received from the image source (S) horizontally or vertically by performing the row-scanning process and/or the column-scanning process to the rows (R 1 , R 2 , R 3 ,...) and/or the columns (C 1 , C 2 , C 3 ,...) it determines.
• the format of the image received can be properly detected and transmitted to the screen (2).
• control unit (3) In a derivative of this embodiment, during the row-scanning process, the control unit (3)
• control unit (3) in another derivative of this embodiment, during the column-scanning process, the control unit (3)
• control unit (3) for each resolution value, information on which one of the row- and column-scanning processes should be performed before the other is saved in the memory of the control unit (3). If the resolution of the image received is 1920x1080, the control unit (3) first performs the row-scanning process since the possibility of the image being a side-by-side 3d image is higher than the possibility of the image being a one-over-the-other 3d image and if it decides that the image is not a side-by-side 3d image at the end of the row-scanning process, it performs the column-scanning process.
• the control unit (3) first performs the column-scanning process since the possibility of the image being a side-by-side 3d image is lower than the possibility of the image being a one-over-the-other 3d image and if it decides that the image is not a one-over-the-other 3d image at the end of the column-scanning process, it performs the row-scanning process.
• the control unit (3) is provided to determine more quickly the image format.
• control unit (3) controls the color values of consecutive rows (R 1 , R 2 , R 3 ,...) during the row-scanning process.
• the row-scanning process is realized more quickly.
• control unit (3) controls the color values of consecutive columns (C1, C2, C3,%) during the column-scanning process.
• the column-scanning process is realized more quickly.
• the control unit (3) decides that the image is a 2d image if it decides that the image is not a side-by-side 3d image and/or a one-over-the-other 3d image.
• the control unit (3) decides that only a single image is received from the image (S), in other words that the image is 2d and transmits the image received to the screen (2).
• the image source (S) is preferably the digital terrestrial broadcast.
• the control unit (3) enables the user to select the image format if it decides that the image is not a side-by-side 3d image and/or a one-over-the-other 3d image.
• the image source (S) is preferably a media player. Since it is not sufficient to know if the image received is not a one-over-the-other 3d image and/or a side-by-side 3d image for deciding that the image is 3d, the selection of the format is left to the user in order to prevent the image from being wrongly transmitted to the screen (2). Thus, the image received from the image source (S) is prevented from being wrongly transmitted to the screen (2).
• the format of the images, in the image signal of which there is no format information are transmitted to the screen (2) in a proper and quick way. Moreover, the necessity for the user to manually select the undetermined formats is substantially eliminated and user satisfaction is provided.

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• Engineering & Computer Science (AREA)
• Multimedia (AREA)
• Signal Processing (AREA)
• Testing, Inspecting, Measuring Of Stereoscopic Televisions And Televisions (AREA)

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• 2011
  • 2011-12-26 EP EP11805531.8A patent/EP2659453A1/de not_active Withdrawn
  • 2011-12-26 WO PCT/EP2011/074056 patent/WO2012089714A1/en active Application Filing

Non-Patent Citations (2)

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