Blocking-effect eliminating circuit for use in image signal code

Details Blocking-effect eliminating circuit for use in image signal code Blocking-effect eliminating circuit for use in image signal code

1996-04-24

1998-03-24

Rogers, Scott A.

Image analysis

Image enhancement or restoration

Image filter

382264, 382268, 382250, 382275, 358433, 358463, G06T 500, G06T 900, H04N 1409, H04N 1415

Patent

active

057321590

ABSTRACT:
A blocking-effect eliminating circuit in an image coder/decoder employs a weighted value according to the location of each pixel and the quantization step size in a block constituting an input image, to thereby reduce the blocking effect generated in a received image and enhance image quality.

REFERENCES:
patent: 5359676 (1994-10-01), Fan
patent: 5379122 (1995-01-01), Eschbach
A. Zakhor, "Iterative Procedures for Reduction of Blocking Effects in Transform Image Coding," IEEE Transactions on Circuits and Systems For Video Technology, vol. 2, No. 1, Mar. 1992, pp. 91-95.
Y. Nakajima, "Postprocessing Algorithms for Noise Reduction of MPEG Coded Video," The Institute of Electronics Information and Communications Engineers, Technical Report, IE94-7, pp. 45-51.

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