The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 19, 2002
Filed:
Feb. 14, 1995
Image processing method and image processing apparatus for executing gradation conversion of a pixel
Applicant:
Inventors:
Assignee:
Fujitsu Limited, Kawasaki, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04N 5/31 ; H04N 7/01 ;
U.S. Cl.
CPC ...
H04N 5/31 ; H04N 7/01 ;
Abstract
An image processing method for converting the pixel value of a pixel of interest in a displayed image, wherein pixel values of the pixel of interest and pixels surrounding the same are compared with a predetermined threshold value while a conversion characteristic most suitable for the pixel of interest is selected on the basis of the result of comparison indicating the magnitude relationship, and the pixel value of the pixel of interest is changed according to the most suitable conversion characteristic that is selected. The threshold may have different values for different pixels, may have the same value over one scan line, or may be constant for all pixels.