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. 06, 2026
Filed:
Jan. 10, 2023
Canon Kabushiki Kaisha, Tokyo, JP;
Yasuo Fukuda, Tokyo, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
A piecewise linear function for image tone conversion is easily corrected. An image processing apparatus first obtains a piecewise linear function for image tone conversion. Next, the image processing apparatus performs correction, in a case where the magnitude of the slope of the piecewise linear function in a processing target piece is larger than a predefined upper limit value, on the piecewise linear function so as to bring the magnitude of the slope of the piecewise linear function in the processing target piece to the upper limit value by changing the value of the end point of the processing target piece. The image processing apparatus performs the correction sequentially on a piece adjacent to the processing target piece.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile