Patent №
US 5,086,484
Granted
1992-02-04
Filed 1989
Owner
CANON KABUSHIKI KAISHA
Lab
—
AI components
1
vision
Assignment
Recorded
Dataset
AIPD
2023_r1 edition
Application
07396339
An image processing apparatus of this invention is arranged so that a threshold for use in binarization is switched between two types in accordance with whether or not a portion in which input pixel data is located is positioned in the vicinity of an edge portion of an image. One type is a threshold which varies in the width of variation corresponding to the density of the input pixel, while the other type is a fixed threshold. If an objective pixel is located in the vicinity of an edge portion of an image, binarization is carried out with the fixed threshold, while if the objective pixel is located in a non-edge portion, the variable threshold is used.
AI classification
Ownership
CANON KABUSHIKI KAISHA
assignment · 51180005
Assignors
KATAYAMA, AKIHIRO, OOSAWA, HIDEFUMI
On an employer assignment, the assignors are typically the inventors.