Hsi Long Wu

US Patent:

8111752, Feb 7, 2012

Filed:

Apr 28, 2005

Appl. No.:

11/119428

Inventors:

Roger Kumar - San Francisco CA, US
Thomas Pun - San Jose CA, US
Hsi Jung Wu - Sunnyvale CA, US

Assignee:

Apple Inc. - Cupertino CA

International Classification:

H04N 7/12

US Classification:

37524016

Abstract:

A method for encoding a first set of pixels in a first image in a sequence of images is described. From a set of encoding modes, the method selects a first mode for encoding the first set of pixels. The method then determines whether encoding the first set of pixels in the first mode satisfies a set of quality criteria. The method foregoes encoding the first set of pixels in a second mode from the set of encoding modes, when the first mode encoding satisfies the set of quality criteria. The method also provides a video encoding method that examines several different methods for encoding a set of pixels in a first image. From a list of possible encoding modes, the method eliminates a set of encoding modes that are not likely to provide a suitable encoding solution. The method then examines different encoding solutions based on the remaining encoding modes in the list.

US Patent:

20050286777, Dec 29, 2005

Filed:

Apr 28, 2005

Appl. No.:

11/119414

Inventors:

Roger Kumar - San Francisco CA, US
Thomas Pun - San Jose CA, US
Hsi Wu - Sunnyvale CA, US
Christian Duvivier - Redwood City CA, US

International Classification:

G06K009/36

US Classification:

382232000, 382236000

Abstract:

Some embodiments provide a method for encoding a first set of pixels in a first image by reference to a second image in a video sequence. In a first search window within a second image, the method searches to identify a first particular portion in the second image that best matches the first set of pixels in the first image. In the first search window within the second image, the method identifies a first location corresponding to the first particular portion. In a second search window within the second image, the method then searches to identify a second particular portion in the second image that best matches the first set of pixels in the first image, where the second search window is defined about the first location.

US Patent:

20120155541, Jun 21, 2012

Filed:

Dec 21, 2011

Appl. No.:

13/333635

Inventors:

Roger Kumar - San Francisco CA, US
Thomas Pun - San Jose CA, US
Hsi Jung Wu - Sunnyvale CA, US

International Classification:

H04N 7/12
H04N 7/26

US Classification:

37524016, 375E07104, 375E07105

Abstract:

A method for encoding a first set of pixels in a first image in a sequence of images. From a set of encoding modes, the method selects a first mode for encoding the first set of pixels. The method then determines whether encoding the first set of pixels in the first mode satisfies a set of quality criteria. The method foregoes encoding the first set of pixels in a second mode from the set of encoding modes, when the first mode encoding satisfies the set of quality criteria. Some embodiments provide a video encoding method that examines different methods for encoding a set of pixels in a first image. From a list of possible encoding modes, the method eliminates a set of encoding modes that are not likely to provide a suitable encoding solution. The method then examines different encoding solutions based on the remaining encoding modes in the list.

US Patent:

20130297875, Nov 7, 2013

Filed:

Apr 1, 2013

Appl. No.:

13/854879

Inventors:

Roger Kumar - San Francisco CA, US
Thomas Pun - San Jose CA, US
Hsi Jung Wu - Sunnyvale CA, US
Christian Duvivier - Redwood City CA, US

International Classification:

G06F 12/08

US Classification:

711119

Abstract:

Some embodiments provide a method for encoding a first set of pixels in a first image by reference to a second image in a video sequence. In a first search window within a second image, the method searches to identify a first particular portion in the second image that best matches the first set of pixels in the first image. In the first search window within the second image, the method identifies a first location corresponding to the first particular portion. In a second search window within the second image, the method then searches to identify a second particular portion in the second image that best matches the first set of pixels in the first image, where the second search window is defined about the first location.