公开(公告)号：EP1683342A1

公开(公告)日：2006-07-26

申请号：EP04770331.9

申请日：2004-10-27

申请人： Koninklijke Philips Electronics N.V.

发明人： KLOMPENHOUWER, Michiel, A. ,  LANGENDIJK, Erno, H., A.

IPC分类号： H04N1/60

CPC分类号： G06F3/14 ,  G06T5/009 ,  G06T2207/10024 ,  G09G5/02 ,  H04N1/6058

摘要： An apparatus and method for primary color correction and clipping is provided that is particularly suited for application in mobile displays. It is a combination of a brightness reduction, and a `smart' clipping algorithm and is based on the perceptual attribute 'colorfulness', in which images that are brighter seem to posses more color. In the smart clipping algorithm, a brightness reduction is followed by a gamut (primary) correction and then a smart clip is performed by 'adding white' to the out-of-gamut pixels only. This reduces the saturation while it increases the brightness. That is, the saturation is decreased in favor of increased brightness, which gives similar colorfulness on a mobile display as on an EBU display. This smart clipping affects those colors that cannot be represented on the display.

公开(公告)号：EP1590783A1

公开(公告)日：2005-11-02

申请号：EP04702773.5

申请日：2004-01-16

申请人： Koninklijke Philips Electronics N.V.

发明人： HEYNDERICKX, Ingrid, E., J., R. ,  LANGENDIJK, Erno, H., A.

IPC分类号： G09G3/00 ,  G09G3/20 ,  G09G3/18 ,  G09G3/24 ,  G09G3/36 ,  H04N9/64 ,  H04N9/30

CPC分类号： G09G5/026 ,  G09G1/06 ,  G09G3/2022 ,  G09G3/2074 ,  G09G3/36

摘要： A method of displaying an image on a color display comprises receiving image data to be displayed, forming a first sub image and a second sub image from said image data, said first sub image comprising a first set of colors and said second sub image comprising a second set of colors, wherein said first set of colors and said second set of colors are disjoint sets, and wherein said first set of colors and said second set of colors comprise a metamer formed by at least a first color in said first set of colors and at least a second color in said second set of colors, and displaying said image using said first sub image and said second sub image, or a representation thereof, on a color display.