Image analysis – Image compression or coding – Including details of decompression
Reexamination Certificate
2006-08-08
2006-08-08
Do, Anh Hong (Department: 2624)
Image analysis
Image compression or coding
Including details of decompression
C382S245000, C382S246000, C382S240000
Reexamination Certificate
active
07088866
ABSTRACT:
The method generates a compressed digital image from a original image. The compressed digital image allows random access to portions of the compressed image at a number of resolutions. The original image is first transformed (103) by a multi-level DWT to form a non redundant multiple resolution frequency domain representation of the image. The representation comprises a DC subband and a plurality of high frequency subbands arranged as levels, where each level represents a frequency contribution between adjacent resolutions and where each subband comprises a plurality of tiles. The DC subband is then entropy encoded (104) into the bitstream. The high frequency subbands are next entropy encoded (108,109, and110) into the bitstream in level order (105,113,114) and tile order (107,111).
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Canon Kabushiki Kaisha
Do Anh Hong
Fitzpatrick ,Cella, Harper & Scinto
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