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:
Jan. 31, 1989
Filed:
Nov. 21, 1986
Applicant:
Inventor:
Takehiro Ema, Ootawara, JP;
Assignee:
Kabushiki Kaisha Toshiba, Kawasaki, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
A61B / ; G01N / ; G06F / ;
U.S. Cl.
CPC ...
36441323 ; 378 99 ; 358111 ; 382-6 ; 382 54 ;
Abstract
An X-ray image-processing apparatus includes a subtraction circuit for performing subtraction between a mask image and a contrast image, and a grayscale-transforming circuit for transforming the grayscales of the mask image, based upon the grayscales of the contrast image, so as to reduce the difference in the grayscales between these images. This grayscale transformation is performed before the subtraction processing.