1
Tihao Chiang, Huifang Sun, Wilson Kwok, Max Chien, Ya Qin Zhang: Apparatus and method for optimizing the rate control in a coding system. Sarnoff Corporation, Sharp Corporation, William J Purke, December 12, 2000: US06160846 (157 worldwide citation)

A method and apparatus for selecting a quantizer scale for each macroblock to maintain the overall quality of the video image while optimizing the coding rate. A quantizer scale is selected for each macroblock such that target bit rate for the picture is achieved while an optimal quantization scale ...


2
Huifang Sun, Joel W Zdepski: Error concealment apparatus for HDTV receivers. RCA Thomson Licensing Corporation, Joseph S Tripoli, Eric P Herrmann, Ronald H Kurdyla, September 21, 1993: US05247363 (116 worldwide citation)

Image reproduction is improved in an MPEG-like television receiver by inclusion of post-processing adaptive error concealment. Compressed video signal is examined to determine blocks of video signal containing errors, and error tokens are generated for identifying corresponding blocks of decompresse ...


3
Paul DaGraca, Anthony Vetro, Ajay Divakaran, Huifang Sun: Networked surveillance and control system. Mitsubishi Electric Research Laboratories, Dirk Brinkman, November 11, 2003: US06646676 (115 worldwide citation)

A surveillance and control system includes a feature extraction unit to dynamically extract low-level features from a compressed digital video signal, a description encoder, coupled to the feature extraction unit, to encode the low-level features as content descriptors. An event detector is coupled ...


4
Huifang Sun, Joel W Zdepski, Kamil M Uz: Error concealment apparatus for MPEG-like video data. RCA Thomson Licensing Corporation, Joseph S Tripoli, Eric P Herrmann, Ronald H Kurdyla, August 15, 1995: US05442400 (113 worldwide citation)

A video signal compression system includes motion compensated predictive compression apparatus for compressing respective frames of video signal according to either intraframe processing or interframe processing on a block by block basis to generate blocks of compressed data and associated motion ve ...


5
Tihao Chiang, Max Chien, Wilson Kwok, Huifang Sun: Apparatus and method for selecting a coding mode in a block-based coding system. Sarnoff Corporation, William J Burke, February 20, 2001: US06192081 (109 worldwide citation)

An apparatus and concomitant method for selecting a macroblock coding mode based upon the quantization scale selected for the macroblock. The total number of bits needed to code each macroblock consists of two parts, bits needed for coding motion vectors and bits for coding the predictive residual. ...


6
Anthony Vetro, Ajay Divakaran, Huifang Sun: Adaptable bitstream video delivery system. Mitsubishi Electric Research Laboratories, Dirk Brinkman, December 3, 2002: US06490320 (106 worldwide citation)

In an apparatus for transcoding a compressed video, a generator simulates constraints of a network and constraints of a user device. A classifier is coupled to receive an input compressed video and the constraints. The classifier generates content information from features of the input compressed vi ...


7
Huifang Sun, Joel W Zdepski: Apparatus for concealing errors in a digital video processing system. RCA Thomson Licensing Corporation, Joseph S Tripoli, Eric P Herrmann, Ronald H Kurdyla, October 3, 1995: US05455629 (102 worldwide citation)

A digital video signal processing system includes apparatus for concealing errors which might occur in reproduced images due to image data lost during signal transmission. The system includes circuitry for detecting transmitted video data, generating error signals if errors are present in segments ( ...


8
Huifang Sun, Anthony Vetro: Adaptive video coding method. Mitsubishi Electric Information Technology Center America, Dirk Brinkman, October 19, 1999: US05969764 (101 worldwide citation)

A method adaptively encodes a sequence of frames including video objects to provide a compressed video signal. The encoding is via a buffer having a ariable input rate and a constant output rate. The encoding uses a discrete cosine transform to produce coefficients that are quantized to generate ima ...


9
Anthony Vetro, Huifang Sun, Tommy Poon: Three-layer scaleable decoder and method of decoding. Mitsubishi Electric Research Laboratories, Dirk Brinkman, February 11, 2003: US06519288 (64 worldwide citation)

The apparatus for decoding a digital signal includes a composite picture forming unit for forming a composite picture from a first digital video signal and a second digital video signal. The first digital video signal includes inter-coded picture data. A down-converter receives a third digital video ...


10
Jun Xin, Emin Martinian, Alexander Behrens, Anthony Vetro, Huifang Sun: Method and system for managing reference pictures in multiview videos. Mitsubishi Electric Research Laboratories, Dirk Brinkman, Gene Vinokur, February 10, 2009: US07489342 (63 worldwide citation)

A system and method manages multiview videos. A reference picture list is maintained for each current frame of multiple multiview videos. The reference picture list indexes temporal reference pictures, spatial reference pictures and synthesized reference pictures of the multiview videos. Then, each ...