Apparatus for reducing quantization artifacts in an interframe h

Details Apparatus for reducing quantization artifacts in an interframe h Apparatus for reducing quantization artifacts in an interframe h

1991-08-08

1993-10-05

Oberley, Alvin L.

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

358136, 358105, H04N 712

Patent

active

052510280

ABSTRACT:
Apparatus for reducing halos at moving edges adjacent flat areas in successive images produced by a system using differential pulse code modulation with motion compensation in which the output of a DCT is quantized by reducing the size of the quantization steps in those areas of the image which are indicated as containing such moving edges adjacent flat areas.

REFERENCES:
patent: 4833535 (1989-05-01), Ozeki et al.
patent: 4972260 (1990-11-01), Fujikawa et al.
patent: 5025482 (1992-06-01), Maurakami et al.
patent: 5111294 (1992-05-01), Asai et al.
patent: 5113256 (1992-05-01), Citta et al.
"MPEG Video Simulation Model Three (SM3)," Simulation Model Editorial Group, Jul. 25, 1990.
"Advanced Digital Television Description" by The Advanced Television Research Consortium: David Sarnoff Research Center, NBC, North American Philips, and Thomson Consumer Research, Feb. 27, 1991.
"On Comparing Motion-Interpolation Structures for Video Coding," A. Puri and R. Aravind: Visual Communications and Image Processing '90 SPIE vol. 1360, pp. 1560-1571.
"Video Coding with Motion-Compensated Interpolation for CD-ROM Applications," A. Puri, R. Aravind, B. G. Haskell, and R. Leonardi, Signal Processing: Image Communication 2 (1990), pp. 127-144.
"Moving Picture Coding System for Digital Storage Media Using Hybrid Coating," Atsushi Narata et al., Signal Processing & Image Communication 2 (1990) pp. 109-116.

Affiliated with

Also associated with

Rating

Apparatus for reducing quantization artifacts in an interframe h does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Apparatus for reducing quantization artifacts in an interframe h, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Apparatus for reducing quantization artifacts in an interframe h will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1008542