Mediatek Corporation

Hfi Innovation Inc.

Chi-Ling Wu

Yu-Pao Tsai

Yu-Wen Huang

Shaw-Min Lei

Chih-Ming Fu

Chia-Ping Chen

Ching-Yeh Chen

Jian-Liang Lin

Yi-Wen Chen

Yu-Ting Chen

Shih-Ta Hsiang

Yu-Lin Chang

A method and apparatus for texture image compression in a 3D video coding system are disclosed. Embodiments according to the present invention derive depth information related to a depth map associated with a texture image and then process the texture image based on the depth information derived. The invention can be applied to the encoder side as well as the decoder side. The encoding order or decoding order for the depth maps and the texture images can be based on block-wise interleaving or picture-wise interleaving. One aspect of the present invent is related to partitioning of the texture image based on depth information of the depth map. Another aspect of the present invention is related to motion vector or motion vector predictor processing based on the depth information.

Method and apparatus of texture image compress in 3D video coding

A method and apparatus for deriving a motion vector predictor (MVP) are disclosed. The MVP is selected from spatial MVP and temporalone or more MVP candidates. The method determines a value of a flag in a video bitstream, where the flag is utilized for selectively disabling use of one or more temporal MVP candidates for motion vector prediction. The method selects, based on an index derived from the video bitstream, the MVP from one or more non-temporal MVP candidates responsive to the flag indicating that said one or more temporal MVP candidates are not to be utilized for motion vector prediction. Further, the method provides the MVP for the current block.

Method and apparatus for parsing error robustness of temporal motion vector prediction

The invention provides an input-output calibration method performed by a processing unit connected to an output device and an input device. The output and the input device correspond to an output and an input device coordinate systems, respectively. The processing unit uses the input device to derive a plurality of lines in the input device coordinate system for M calibration points by sensing a viewer specifying the M calibration points' positions, the plurality of lines are between the M calibration points and the viewer's the predetermined object's different positions, M is a positive integer equal to or larger than three. The processing unit derives the M calibration points' coordinates in the input device coordinate system according to the plurality of lines and uses the M calibration points' coordinates in the output and the input device coordinate systems to derive the relationship between the output and the input device coordinate systems.

Methods for input-output calibration and image rendering

A method and apparatus for deriving a motion vector predictor (MVP) are disclosed. The MVP is selected from spatial MVP and temporal MVP candidates. The method uses a flag to indicate whether temporal MVP candidates are disabled. If the flag indicates that the temporal MVP candidates are disabled, the MVP is derived from the spatial MVP candidates only. Otherwise, the MVP is derived from the spatial and temporal MVP candidates. The method may further skip spatial redundant MVP removal by comparing MV values. Furthermore, the parsing error robustness scheme determines a forced temporal MVP when a temporal MVP is not available and the temporal MVP candidates are allowed as indicated by the flag. The flag may be incorporated in sequence, picture, slice level, or a combination of these levels.

One of the embodiments of the invention provides an input-output calibration method performed by a processing unit connected to an output device and an input device. The output device and the input device correspond to an output device coordinate system and an input device coordinate system, respectively. The processing unit first derives M calibration points' coordinates in the input device coordinate system by using the input device to sense a viewer specifying the M calibration points' positions, wherein M is a positive integer. Then, the processing unit uses the M calibration points' coordinates in the output device coordinate system and coordinates in the input device coordinate system to derive the relationship between the output device coordinate system and the input device coordinate system.

Growing community of inventors

Taipei, Taiwan

Chi-Ling Wu