Image analysis – Color image processing – Compression of color images
Patent
1996-05-03
1998-08-04
Boudreau, Leo
Image analysis
Color image processing
Compression of color images
382103, 382233, 382236, 382238, 382239, 382251, 382291, 382 12, 348405, 348407, 348415, 348397, 358433, G06K 900, G06K 936, G06K 938
Patent
active
057906955
ABSTRACT:
An image coding device for coding image data includes a motion inter-frame compensation predicting unit for predictively coding an image signal at each frame based on an input image signal and a stored image signal and outputting a predictive error signal, an orthogonal transformation unit for orthogonally transforming the predictive error signal, and a quantizing unit for quantizing a transforming coefficient formed by the orthogonal transformation. The image coding device further provides an image area detector for detecting a specified image area from the image represented by the image signal and error quantizing unit for deriving a quantizing error of the specified area. The quantized error derived by the unit is re-quantized in an error quantizing unit under control of an error coding control unit.
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Boudreau Leo
Shalwala Bipin
Sharp Kabushiki Kaisha
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