Image analysis – Image enhancement or restoration – Intensity – brightness – contrast – or shading correction
Reexamination Certificate
2006-08-10
2010-06-01
Kassa, Yosef (Department: 2624)
Image analysis
Image enhancement or restoration
Intensity, brightness, contrast, or shading correction
C382S260000, C382S275000, C358S003260, C358S003270
Reexamination Certificate
active
07729557
ABSTRACT:
The invention relates to a method for processing video data to be displayed on a display device having a plurality of luminous elements corresponding to the pixels of a video picture, wherein an error diffusion step is applied to at least a part of said video data to refine the grey scale portrayal of said video picture, said error diffusion step comprising, for each current pixel of said part of video picture, a step of truncating the value of the corresponding video data and a step of diffusing the truncation error to at least one neighboring pixel. According to the invention, a noise is inserted on the error before and/or after its diffusion to the neighbouring cells. Owing to this principle no static pattern should be visible, improving the overall picture quality.
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European Search Report dated Nov. 28, 2006.
Correa Carlos
Thebault Cédric
Weitbruch Sébastien
Fried Harvey D.
Kassa Yosef
McKenzie James
Shedd Robert D.
Thomson Licensing
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