H - Electricity – 04 – N
Patent
H - Electricity
04
N
H04N 7/50 (2006.01) G06T 9/00 (2006.01) H04N 7/26 (2006.01) H04N 7/30 (2006.01)
Patent
CA 2191907
The invention is an image transmitting method and system including receiving encoded images, decoding those images and post-processing the decoded images. The post-processing reduces visual artifacts, such as blocking artifacts and mosquito noise, through separate detection, mapping and smoothing operations while avoiding many of the complexities associated with existing techniques. In detecting blocking artifacts, the inventive method employs DCT-domain detection rather than edge detection in the pixel domain. Also, the interior of a detected block is updated based on the surrounding blocks without disturbing the surrounding blocks. In reducing mosquito noise, the inventive method smoothes the non-edge pixels within blocks containing edge pixels rather than smoothing the edge pixels. Also, distortion-induced false edge pixels are distinguished from true edge pixels and heavily smoothed. The post-processing method and system is generally applicable to Block DCT based compression systems, either intrinsically or extrinsically.
Apostolopoulos John G.
Jayant Nuggehally Sampath
Kirby Eades Gale Baker
Lucent Technologies Inc.
LandOfFree
Method and apparatus for post-processing images to reduce... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method and apparatus for post-processing images to reduce..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for post-processing images to reduce... will most certainly appreciate the feedback.
Profile ID: LFCA-PAI-O-1401446