Method and apparatus for transformation and inverse transformation of image for image compression coding
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United States of America Patent
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Issued Date -
Oct 4, 2001
app pub date -
Feb 20, 2001
filing date -
Feb 21, 2000
priority date (Note) -
Abandoned
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Abstract
A method and apparatus for compression transformation and inverse transformation of a digital image wherein, for the transformation and inverse transformation, a determination is made as to whether all input data values are 0, and an unnecessary transform process is skipped if all the input data values are determined to be 0, thereby reducing power consumption resulting from the unnecessary transform process. The present method and apparatus can very simply be implemented and minimize power consumption. Therefore, the present invention is significantly effective in implementing a low-power video codec essential to mobile communication terminals.
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