Patent №
US 6,944,347
Granted
2005-09-13
Filed 2002
Owner
KOREA ADVANCED INSTITUTE OF SCIENCE AND TECHNOLOGY
+1 more
Lab
—
AI components
1
vision
Assignment
Recorded
Dataset
AIPD
2023_r1 edition
Application
10143069
The present invention relates to the image compression and restoring method for binary images that can be used in binary image equipment including printers.In the present invention, an image is not compressed by each pixel but by cell that combines four pixels. And each cell is compressed in two steps. In the first step, the number of black pixels contained in the cell is compressed. And in the second step, using the number of pixels the information compressed in the previous step, the exact location of pixels that constitute the cell is compressed. By doing this, the compression rate can be increased. And even when the compressed bit rows are restored in the first step, image restoration is available with just a small degradation.
AI classification
Ownership
KOREA ADVANCED INSTITUTE OF SCIENCE AND TECHNOLOGY
assignment · 131780896
SAMSUNG ELECTRONICS CO., LTD.
assignment · 271410839
Assignors
LEE, CHUL SOO, PARK, HYUN WOOK
On an employer assignment, the assignors are typically the inventors.