Lihua Zhu

8619871, Dec 31, 2013

Apr 7, 2008

12/450868

Lihua Zhu - San Jose CA, US
Jiancong Luo - Plainsboro NJ, US
Peng Yin - Ithaca NY, US
Jiheng Yang - Beijing, CN

Thomson Licensing - Issy-les-Moulineaux

H04N 7/12
H04N 11/02
H04N 11/04

37524025, 37524026

In an implementation, a supplemental sequence parameter set (“SPS”) structure is provided that has its own network abstraction layer (“NAL”) unit type and allows transmission of layer-dependent parameters for non-base layers in an SVC environment. The supplemental SPS structure also may be used for view information in an MVC environment. In a general aspect, a structure is provided that includes (1) information () from an SPS NAL unit, the information describing a parameter for use in decoding a first-layer encoding of a sequence of images, and (2) information () from a supplemental SPS NAL unit having a different structure than the SPS NAL unit, and the information from the supplemental SPS NAL unit describing a parameter for use in decoding a second-layer encoding of the sequence of images. Associated methods and apparatuses are provided on the encoder and decoder sides, as well as for the signal.

20100091837, Apr 15, 2010

Dec 21, 2007

12/448510

Lihua Zhu - San Jose CA, US
Jiancong Luo - West windsor NJ, US
Peng Yin - Ithaca NY, US
Cristina Gomila - Princeton NY, US

THOMSON LICENSING - Boulogne-Billancourt

H04N 7/26

37524001, 375E07078

The present principles relate to a hypothetical reference decoder (HRD) for a Scalable Video Coding extension for a compression algorithm. One such implementation proposes to modify the H.264/AVC HRD for use with the SVC of AVC. That implementation defines HRD constraints for each interoperability point of SVC. One implementation in particular is described, but other implementations are possible and are contemplated by the present principles. The changes for spatial, temporal, and SNR scalability are shown. There are also changes to the related HRD parameters followed that are shown. The several mentioned implementations provide rules for an HRD for SVC. At least one implementation proposes the SVC-HRD rules as modifications to the AVC-HRD rules. A user may use the proposed SVC-HRD rules to build an SVC-HRD and test a bitstream for SVC compliance.

20110188749, Aug 4, 2011

Mar 26, 2010

12/748058

Lihua ZHU - Mountain View CA, US
Haihua Wu - Mountain View CA, US
Chung-Tao Chu - Mountain View CA, US
Richard Hua - Mountain View CA, US

G06K 9/40
G06T 5/00

382167, 382263, 382264, 382266

An image processing method for boundary resolution enhancement is disclosed. Firstly, an image is transferred into an image layer. Noise of the image layer is removed by a bilateral filter and crisp edges are retained at the same time. Moreover, the image layer is interpolated by an interpolation filter for resolution enhancement. The image processing method of the present invention can lower the image blur degree substantially, enhance the image resolution and be widely implemented in all sorts of image/video processing hardware devices.

20220394287, Dec 8, 2022

Aug 18, 2022

17/890425

- Redmond WA, US
Lihua Zhu - Mountain View CA, US

Microsoft Technology Licensing, LLC - Redmond WA

H04N 19/46
H04N 21/234
H04N 21/44
H04N 19/70

Innovations in syntax and semantics of coded picture buffer removal delay (“CPBRD”) values potentially simplify splicing operations. For example, a video encoder sets a CPBRD value for a current picture that indicates an increment value relative to a nominal coded picture buffer removal time of a preceding picture in decoding order, regardless of whether the preceding picture has a buffering period SEI message. The encoder can signal the CPBRD value according to a single-value approach in which a flag indicates how to interpret the CPBRD value, according to a two-value approach in which another CPBRD value (having a different interpretation) is also signaled, or according to a two-value approach that uses a flag and a delta value. A corresponding video decoder receives and parses the CPBRD value for the current picture. A splicing tool can perform simple concatenation operations to splice bitstreams using the CPBRD value for the current picture.

20230017536, Jan 19, 2023

Sep 16, 2022

17/946149

- Redmond WA, US
Lihua Zhu - Mountain View CA, US

Microsoft Technology Licensing, LLC - Redmond WA

H04N 19/46
H04N 21/234
H04N 21/44
H04N 19/70

Innovations in syntax and semantics of coded picture buffer removal delay (“CPBRD”) values potentially simplify splicing operations. For example, a video encoder sets a CPBRD value for a current picture that indicates an increment value relative to a nominal coded picture buffer removal time of a preceding picture in decoding order, regardless of whether the preceding picture has a buffering period SEI message. The encoder can signal the CPBRD value according to a single-value approach in which a flag indicates how to interpret the CPBRD value, according to a two-value approach in which another CPBRD value (having a different interpretation) is also signaled, or according to a two-value approach that uses a flag and a delta value. A corresponding video decoder receives and parses the CPBRD value for the current picture. A splicing tool can perform simple concatenation operations to splice bitstreams using the CPBRD value for the current picture.

20210314594, Oct 7, 2021

Jun 17, 2021

17/350510

- Redmond WA, US
Lihua Zhu - Mountain View CA, US

Microsoft Technology Licensing, LLC - Redmond WA

H04N 19/46
H04N 21/234
H04N 21/44
H04N 19/70

Innovations in syntax and semantics of coded picture buffer removal delay (“CPBRD”) values potentially simplify splicing operations. For example, a video encoder sets a CPBRD value for a current picture that indicates an increment value relative to a nominal coded picture buffer removal time of a preceding picture in decoding order, regardless of whether the preceding picture has a buffering period SEI message. The encoder can signal the CPBRD value according to a single-value approach in which a flag indicates how to interpret the CPBRD value, according to a two-value approach in which another CPBRD value (having a different interpretation) is also signaled, or according to a two-value approach that uses a flag and a delta value. A corresponding video decoder receives and parses the CPBRD value for the current picture. A splicing tool can perform simple concatenation operations to splice bitstreams using the CPBRD value for the current picture.

20210112260, Apr 15, 2021

Dec 22, 2020

17/130155

- Wilmington DE, US
Lihua Zhu - San Jose CA, US
Peng Yin - Ithaca NY, US

H04N 19/30
H04N 19/70

There are provided methods and apparatus for video usability information (VUI) for scalable video coding (SVC). An apparatus includes an encoder () for encoding video signal data into a bitstream. The encoder specifies video user information, excluding hypothetical reference decoder parameters, in the bitstream using a high level syntax element. The video user information corresponds to a set of interoperability points in the bitstream relating to scalable video coding ().

20200068210, Feb 27, 2020

Oct 31, 2019

16/670130

- Wilmington DE, US
Lihua Zhu - San Jose CA, US
Peng Yin - Ithaca NY, US

H04N 19/30
H04N 19/70

There are provided methods and apparatus for video usability information (VUI) for scalable video coding (SVC). An apparatus includes an encoder () for encoding video signal data into a bitstream. The encoder specifies video user information, excluding hypothetical reference decoder parameters, in the bitstream using a high level syntax element. The video user information corresponds to a set of interoperability points in the bitstream relating to scalable video coding ().