Image analysis – Image compression or coding
Reexamination Certificate
2006-12-27
2010-12-07
Ishrat, Sherali (Department: 2624)
Image analysis
Image compression or coding
Reexamination Certificate
active
07848580
ABSTRACT:
The present image encoding method and the like represents a pixel block prior to performing spatial frequency transformation in processing such as JPEG or the like as a matrix, calculates sum data sc (i) of pixel values in a column i in the matrix and sum data sr (j) of pixel values in a row j in the matrix, calculates nc (i) and nr (j) such that the sc (i) and sc (j) are arrayed in descending order respectively, and when a predetermined condition that permutation is considered reasonable is satisfied, performs permutation of the matrix, generates header information Ph (n) including the nc (i) and nr (j) necessary for subjecting the matrix to permutation in the original state, and adds this to the header of a compressed image file such as JPEG or the like.
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Horie Ken'ichi
Sakata Seiichiro
Ishrat Sherali
Olympus Corporation
Volpe and Koenig P.C.
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