Image signal decoder

Details Image signal decoder Image signal decoder

1996-11-22

1999-05-25

Chang, Jon

Image analysis

Image compression or coding

Including details of decompression

G06K 936

Patent

active

059076364

ABSTRACT:
An image signal decoder including a DC component correction processing section which inputs inverse transformed DC data X as direct current components of IDCT signals and produces DC component correction data Yn for correcting the inverse transformed DC data X of a target block in process using stored DC components RD corresponding to adjacent blocks of a target block image, resulting in reducing block distortion noises of an decoded image of compressed codes to improve image quality on visual evaluation and to make a large capacity image memory for storing the decoded image disused.

REFERENCES:
patent: 5046121 (1991-09-01), Yonekawa et al.
patent: 5495538 (1996-02-01), Fan
patent: 5625714 (1997-04-01), Fukuda

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