Cheng C Chang

US Patent:

20120201462, Aug 9, 2012

Filed:

Oct 29, 2009

Appl. No.:

13/259521

Inventors:

Cheng Chang - New York NY, US
Erik Ordentlich - San Jose CA, US
Krishnamurthy Viswanathan - Mountain View CA, US
Marcelo Weinberger - San Jose CA, US

International Classification:

G06K 9/46
G06K 9/36

US Classification:

382190, 382248

Abstract:

A joint image compression system () and method () compress a target image and a reference image under a selected transform to produce a compressed difference image. The joint image compression system includes a computer readable media () and a computer program () stored on the computer readable media. The computer program includes instructions that implement selecting () a transform from among a plurality of transforms that includes a subset determined projective (SDP) transform, where the selected transform minimizes a cumulative mapping error (CME) for corresponding feature points in each of a target image () and a reference image (). The instructions further implement applying () the selected transform to one of the target image and the reference image; forming () a difference image under the selected transform and compressing () the difference image to produce a compressed difference image.