Image analysis – Image compression or coding – Transform coding
Reexamination Certificate
2008-10-01
2011-11-22
Sherali, Ishrat I (Department: 2624)
Image analysis
Image compression or coding
Transform coding
Reexamination Certificate
active
08064711
ABSTRACT:
A method of compressing image signals, to provide more efficient compression than a discrete cosine transform (DCT) while having the least amount of overhead information is provided. A partial exchange between a row and a column of a transform matrix is performed by applying several values to a parameter, which shows an extent of partial exchange between rows and columns of the transform matrix. When a value of the used angle parameter is stored or transmitted, an overhead increases. Processes generating a random sequence of the angle parameter, generating a compression coefficient matrix regarding each angle parameter of the generated random sequence, and calculating a compression rate are repeated to obtain an angle parameter with the highest compression rate. The angle parameter having the highest compression rate is not stored or transmitted, but a number in the random sequence of the corresponding angle parameter is obtained, and stored or transmitted.
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Alshin Alexander
Alshina Elena
Koroteev Maxim
Nesterova Ekaterina
Seregin Vadim
Samsung Electronics Co,. Ltd.
Sherali Ishrat I
Sughrue & Mion, PLLC
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