Image analysis – Image compression or coding – Pyramid – hierarchy – or tree structure
Reexamination Certificate
2007-07-03
2007-07-03
Bella, Matthew C. (Department: 2624)
Image analysis
Image compression or coding
Pyramid, hierarchy, or tree structure
C382S166000, C382S245000, C382S246000, C375S240190
Reexamination Certificate
active
10620873
ABSTRACT:
The present invention teaches a method of compressing still images in a multi-purpose compression system. The current invention teaches preprocessing of the images to a YUV 4:2:0 format and decomposing the images using two-dimensional Discrete Wavelet Transformation. The current invention teaches that filters may be selected based on image dimensions. After the image is decomposed, the frequency coefficients are quantized and the data is entropy encoded. The image is restored by reversing the compression process.
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Akimoto Hiroshi
Matulyak Igor V.
Moroz Volodymyr V.
Akimoto Hiroshi
Bella Matthew C.
Garrison David L.
Garrison & Associates PS
Matulyak Igor V.
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