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    GRADATION ADJUSTMENT DEVICE, IMAGE DISPLAYING DEVICE, TELEVISION RECEIVER, PROGRAM, AND COMPUTER-READABLE STORAGE MEDIUM HAVING PROGRAM RECORDED THEREIN
    2.
    发明公开
    GRADATION ADJUSTMENT DEVICE, IMAGE DISPLAYING DEVICE, TELEVISION RECEIVER, PROGRAM, AND COMPUTER-READABLE STORAGE MEDIUM HAVING PROGRAM RECORDED THEREIN 审中-公开
    度设定装置，图像显示装置，电视接收机中，程序及计算机可读存储介质具有程序存储在其上

    公开(公告)号：EP2461566A4

    公开(公告)日：2013-06-19

    申请号：EP10804491

    申请日：2010-07-29

    申请人： SHARP KK

    发明人： WATANABE MIHOKO ,  KOIKE AKIRA ,  TAKIGUCHI MASAHIKO

    IPC分类号： H04N5/20 ,  G06T5/00 ,  G06T5/40 ,  H04N1/407 ,  H04N5/57

    CPC分类号： H04N1/4072 ,  G06T5/007 ,  G06T5/40 ,  G06T2207/20012 ,  G06T2207/30004 ,  H04N5/20 ,  H04N5/57 ,  H04N21/42202 ,  H04N21/4318

    摘要： A video processing section (19) of the present invention is a gradation adjustment device for correcting a gradation of an image to be displayed on a television receiver (10). The video processing section (19) includes, a gradation correcting section (2), an intermediate brightness region determining section (3), a brightness difference determining section (4a), a brightness difference threshold determining section (4b), and a gradation adjusting section (5). The video processing section (19) corrects brightnesses of adjacent pixels, which brightnesses are included in an intermediate brightness region of brightness distribution, so as to reduce a first brightness difference between the adjacent pixels, which first brightness difference is obtained in a case where gain is applied to input image data, [1] the first brightness difference being greater than a second brightness difference between the adjacent pixels, which second brightness difference is obtained in a case where gain is not applied to the input image data, and [2] the first brightness difference being not more than a predetermined threshold. This makes it possible to provide a gradation adjustment device for realizing an image displaying device that keeps an excellent quality of an original image.