Block distortion corrector and image signal expander

Details Block distortion corrector and image signal expander Block distortion corrector and image signal expander

1996-03-08

1999-09-07

Lee, Thomas D.

Image analysis

Image enhancement or restoration

Edge or contour enhancement

382275, 382233, G06K 936, G06K 940

Patent

active

059499176

ABSTRACT:
A block distortion corrector for providing to recovery image data a block distortion correcting process in which a distortion of recovery image data between neighboring image blocks is corrected, the recovery image data being recovered by an expanding process from image data which are compressed and transmitted in units of image blocks corresponding to the prescribed number of pixels, includes an edge detector for detecting whether or not there exits an edge due to the distortion of the image data at a boundary to the neighboring image block by comparing with a reference value a signal level difference between image data of a to-be-processed pixel located at a boundary of neighboring image block and image data of a pixel which is located in an image block different from the image block of the to-be-processed pixel and is in the vicinity of the to-be-processed pixal. The block distortion correcting process is provided to the image data of the to-be-processed pixel located at the boundary to the neighboring image block only when the signal level difference is less than the reference value.

REFERENCES:
patent: 5247363 (1993-09-01), Sun et al.
patent: 5337088 (1994-08-01), Honjo
patent: 5359676 (1994-10-01), Fan
patent: 5444800 (1995-08-01), Kim

Affiliated with

Also associated with

Rating

Block distortion corrector and image signal expander does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Block distortion corrector and image signal expander, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Block distortion corrector and image signal expander will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1812673