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:
Jul. 19, 2016
Filed:
Feb. 05, 2008
Walid Ali, Sammamish, WA (US);
Shankar Regunathan, Bellevue, WA (US);
Guo-wei Shieh, Sammamish, WA (US);
Bruce Lin, Redmond, WA (US);
Bharath Siravara, Redmond, WA (US);
Ce Wang, Bellevue, WA (US);
Walid Ali, Sammamish, WA (US);
Shankar Regunathan, Bellevue, WA (US);
Guo-Wei Shieh, Sammamish, WA (US);
Bruce Lin, Redmond, WA (US);
Bharath Siravara, Redmond, WA (US);
Ce Wang, Bellevue, WA (US);
Microsoft Technology Licensing, LLC, Redmond, WA (US);
Abstract
Architecture for enhancing the compression (e.g., luma, chroma) of a video signal and improving the perceptual quality of the video compression schemes. The architecture operates to reshape the normal multimodal energy distribution of the input video signal to a new energy distribution. In the context of luma, the algorithm maps the black and white (or contrast) information of a picture to a new energy distribution. For example, the contrast can be enhanced in the middle range of the luma spectrum, thereby improving the contrast between a light foreground object and a dark background. At the same time, the algorithm reduces the bit-rate requirements at a particular quantization step size. The algorithm can be utilized also in post-processing to improve the quality of decoded video.