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. 18, 2014
Filed:
Sep. 30, 2011
Richard E. Crandall, Portland, OR (US);
Rudolph Van Der Merwe, Portland, OR (US);
Douglas P. Mitchell, Lake Forest Park, WA (US);
Ian Hendry, Santa Clara, CA (US);
Bertrand Serlet, Palo Alto, CA (US);
Richard E. Crandall, Portland, OR (US);
Rudolph van der Merwe, Portland, OR (US);
Douglas P. Mitchell, Lake Forest Park, WA (US);
Ian Hendry, Santa Clara, CA (US);
Bertrand Serlet, Palo Alto, CA (US);
Apple Inc., Cupertino, CA (US);
Abstract
Psychovisual image compression techniques are disclosed that compress pixel data by a fixed compression ratio with little or no perceptual loss of detail. In some implementations, a psychovisual compression process is selected among several psychovisual compression processes based on characteristics of the pixel data. Compression is achieved during encoding by discarding psychovisually unnecessary bits from the pixel data. The psychovisual compression processes can be implemented in hardware and operate on scan lines of pixels captured by the image sensor. The psychovisual compression techniques can be used with image compression techniques to compress further the pixel data.