Patent №
US 4,722,008
Granted
1988-01-26
Filed 1986
Owner
NIPPON TELEGRAPH & TELEPHONE CORPORATION
Lab
—
AI components
1
vision
Assignment
Recorded
Dataset
AIPD
2023_r1 edition
Application
06817046
A halftone picture processing apparatus has devices for dividing and storing an image signal in the form of blocks each of which consists of a plurality of pixels, for setting at least one path for accessing the pixels in each block, calculating the number of changes in image signals which satisfies predetermined conditions, the changes occurring between succeeding pixels in each block along the path, and detecting a halftone region in accordance with the number of changes in image signals.
AI classification
Ownership
NIPPON TELEGRAPH & TELEPHONE CORPORATION
assignment · 45030081
Assignors
IBARAKI, HISASHI, KOBAYASHI, MAKOTO, OCHI, HIROSHI
On an employer assignment, the assignors are typically the inventors.