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:
Oct. 03, 2023
Filed:
Jun. 10, 2021
Dolby Laboratories Licensing Corporation, San Francisco, CA (US);
Robert Wanat, Sunnyvale, CA (US);
Robin Atkins, Vancouver, CA;
Anustup Kumar Atanu Choudhury, Campbell, CA (US);
Scott Daly, Kalama, WA (US);
Jaclyn Anne Pytlarz, Santa Clara, CA (US);
Dolby Laboratories Licensing Corporation, San Francisco, CA (US);
Abstract
Methods and systems for generating an image quality metric are described. A reference and a test image are first converted to the ITP color space. After calculating difference images ΔI, ΔT, and ΔP, using the color channels of the two images, the difference images are convolved with low pass filters, one for the I channel and one for the chroma channels (I or P). The image quality metric is computed as a function of the sum of squares of filtered ΔI, ΔT, and ΔP values. The chroma low-pass filter is designed to maximize matching the image quality metric with subjective results.