Image analysis – Image compression or coding – Including details of decompression
Patent
1994-05-06
1997-04-29
Couso, Jose L.
Image analysis
Image compression or coding
Including details of decompression
382239, 382251, G06K 936
Patent
active
056257147
ABSTRACT:
An image signal decoding device divides image data into blocks and performs orthogonal transform on image data of each of block to thereby decode coded image data. An inverse orthogonal transform circuit performs inverse orthogonal transform on the coded image data. A detecting circuit detects the band of each of the blocks of the coded image data. A distortion removing circuit changes the distortion removal characteristics according to the band detected by the detecting circuit to remove distortion of image data subjected to the inverse orthogonal transform by the inverse orthogonal transform circuit.
REFERENCES:
patent: 4754492 (1988-06-01), Malvar
patent: 4941043 (1990-07-01), Jass
patent: 4951157 (1990-08-01), Koh et al.
patent: 5093872 (1992-03-01), Tutt
patent: 5210623 (1993-05-01), Weldy
patent: 5229864 (1993-07-01), Moronaga et al.
patent: 5311310 (1994-05-01), Jozawa et al.
patent: 5351083 (1994-09-01), Tsukagoshi
patent: 5384849 (1995-01-01), Jeong
Malvar et al, "The LOT: Transform Coding Without Blocking Effects." IEEE Transactions on Acoustics, Speech, and Signal Processing, vol. 37, No. 4, Apr. 1989.
Bella Matthew C.
Couso Jose L.
Olympus Optical Co,. Ltd.
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