Microsoft Technology Licensing, LLC

Chinese Academy of Sciences

Ford Global Technolgoies, LLC

Baidu Online Network Technology (beijing) Co., Ltd.

Beijing Institute of Technology

Microsoft Corporation

Suzhou Sunmum Technology Co., Ltd.

Syntek International Holding Ltd.

Chongqing Ronghai Medical Ultrasoud Industry Ltd.

Feng Wu

Shipeng Li

Jizheng Xu

Xiaoyan Sun

Jian Li

Yan Lu

Ya-Qin Zhang

Zhiwei Xiong

Alexandros Tourapis

Chong Luo

Gary Joseph Sullivan

Ruiqin Xiong

Lei Wang

Rong Yan

Hui Liu

Wen Sun

Beidou Xi

Yali Zhang

Ji-Zheng Xu

Yangyang Wang

Jinsheng Wang

Tongtong Li

Wenbing Tan

Alexandros Michael Tourapis

Lihua Zhu

Dong Hui Liu

B Anil Kumar

Sridhar Sankuratri

Hao Cui

Chang Wen Chen

Wei Pu

Chih-Lung Lin

Qian Zhang

Lin Luo

You Zhou

Huifeng Shen

Bin Li

Bing Zeng

Yueyi Zhang

Heung-Yeung Shum

Mei Guo

Ming Chang

Yalei Zhang

Richard Junqiang Qian

Xiulian Peng

Renjie Chen

Yonghua Zhang

Andrew C Flavell

Pengyu Cong

Wenpeng Ding

Hao Xu

Jian Wang

Yu Wang

Lin Ma

Hai Feng Wang

Bin Xu

Qi Liu

Lili Wang

Jun Li

Hao Wu

Xian-Sheng Hua

John Allen Tardif

Ning Li

Kun Tan

Dongdong Zhang

Qi Chen

Guobin Shen

Xun Guo

Xiao Guang Yang

Fei Liang

Nan Chen

Xiangyang Ji

Theodore James Miller

Cuiling Lan

Yi Liu

Shi Chen

Wenjun Zeng

Michael Suiping Chen

Bo Qin

Matt Bronder

Jingjing Fu

Guangping Gao

Zheng Ni

Chunbo Zhu

Zhe Yang

Tiantian Sun

Kan Lu

Li Song

Wenxian Yang

Yuwen He

Chongjun Jiang

Feixiang Guo

Yusheng Ye

YuHong Xu

Yinyin Jin

Goubin Shen

Siyuan Yan

Kai Bai

Chuan Wu

Innovations in the area of prediction of block vector ('By') values improve encoding or decoding of blocks using intra block copy (“BC”) prediction. For example, some of the innovations relate to use of a default BV predictor with a non-zero value. Other innovations relate to use of a selected one of multiple BV predictor candidates for a current block. Still other innovations relate to use of a skip mode in which a current intra-BC-predicted block uses a predicted BV value.

Block vector prediction in video and image coding/decoding

Innovations in adaptive encoding and decoding for units of a video sequence can improve coding efficiency. For example, some of the innovations relate to encoding/decoding that includes adaptive switching of color spaces between units within a video sequence. Other innovations relate encoding/decoding that includes adaptive switching of color sampling rates between units within a video sequence. Still other innovations relate encoding/decoding that includes adaptive switching of bit depths between units within a video sequence.

Adaptive switching of color spaces, color sampling rates and/or bit depths

Disclosed herein are exemplary embodiments of methods, apparatus, and systems for performing content-adaptive deblocking to improve the visual quality of video images compressed using block-based motion-predictive video coding. For instance, in certain embodiments of the disclosed technology, edge information is obtained using global orientation energy edge detection ('OEED') techniques on an initially deblocked image. OEED detection can provide a robust partition of local directional features (“LDFs”). For a local directional feature detected in the partition, a directional deblocking filter having an orientation corresponding to the orientation of the LDF can be used. The selected filter can have a filter orientation and activation thresholds that better preserve image details while reducing blocking artifacts. In certain embodiments, for a consecutive non-LDF region, extra smoothing can be imposed to suppress the visually severe blocking artifacts.

Content adaptive deblocking during video encoding and decoding

Innovations in adaptive encoding for units of a video sequence can improve coding efficiency. For example, some of the innovations relate to encoding that includes adaptive switching of color spaces between units within a video sequence. Other innovations relate encoding that includes adaptive switching of color sampling rates between units within a video sequence. Still other innovations relate encoding that includes adaptive switching of bit depths between units within a video sequence.

Encoding strategies for adaptive switching of color spaces, color sampling rates and/or bit depths

Innovations in the use of base color index map ('BCIM') mode dining encoding and/or decoding simplify implementation by reducing the number of modifications made to support BCIM mode and/or improve coding efficiency of BCIM mode. For example, some of the innovations involve reuse of a syntax structure that is adapted for transform coefficients to instead signal data for elements of an index map in BCIM mode. Other innovations relate to mapping of index values in BCIM mode or prediction of elements of an index map in BCIM mode. Still other innovations relate to handling of exception values in BCIM mode.

Features of base color index map mode for video and image coding and decoding

Innovations in the area of prediction of block vector ('BV') values improve encoding or decoding of blocks using intra block copy (“BC”) prediction. For example, some of the innovations relate to use of a default BV predictor with a non-zero value. Other innovations relate to use of a selected one of multiple BV predictor candidates for a current block. Still other innovations relate to use of a skip mode in which a current intra-BC-predicted block uses a predicted BV value.

Disclosed herein are exemplary embodiments of innovations in the area of encoding pictures or portions of pictures (e.g., slices, coding tree units, or coding units) and determining whether and how certain filtering operation should be performed and flagged for performance by the decoder in the bitstream. In particular examples, various implementations for setting the sample adaptive offset (SAO) syntax elements in the H.265/HEVC standard are disclosed. Although these examples concern the H.265/HEVC standard and its SAO filter, the disclosed technology is more widely applicable to other video codecs that involve filtering operations (particularly multi-stage filtering operations) as part of their encoding and decoding processes.

Encoder-side decisions for sample adaptive offset filtering

Disclosed herein are exemplary embodiments of methods, apparatus, and systems for performing content-adaptive deblocking to improve the visual quality of video images compressed using block-based motion-predictive video coding. For instance, in certain embodiments of the disclosed technology, edge information is obtained using global orientation energy edge detection ('OEED') techniques on an initially deblocked image. OEED detection can provide a robust partition of local directional features ('LDFs'). For a local directional feature detected in the partition, a directional deblocking filter having an orientation corresponding to the orientation of the LDF can be used. The selected filter can have a filter orientation and activation thresholds that better preserve image details while reducing blocking artifacts. In certain embodiments, for a consecutive non-LDF region, extra smoothing can be imposed to suppress the visually severe blocking artifacts.

The present disclosure relates to an ionic liquid-based quasi-solid-state electrolyte in a lithium battery and a preparation method thereof. The quasi-solid-state electrolyte is of a porous network structure, which is obtained by a condensation reaction of a lithium salt, ionic liquid, a silane coupling agent and a catalyst, and has a high ionic conductivity. The quasi-solid-state electrolyte can stabilize a stripping/deposition process of lithium metal and inhibit growth of lithium dendrites, and shows a low overpotential and long-term cycle stability in a constant current polarization process. The interface impedance of a lithium metal sheet and the quasi-solid-state electrolyte is low, and is hardly increased with the age of the battery.

Quasi-solid-state electrolyte based on ionic liquid for use in lithium battery and preparation method thereof

Several improvements for use with Bidirectionally Predictive (B) pictures within a video sequence are provided. In certain improvements Direct Mode encoding and/or Motion Vector Prediction are enhanced using spatial prediction techniques. In other improvements Motion Vector prediction includes temporal distance and subblock information, for example, for more accurate prediction. Such improvements and other presented herein significantly improve the performance of any applicable video coding system/logic.

Spatiotemporal prediction for bidirectionally predictive (B) pictures and motion vector prediction for multi-picture reference motion compensation

Innovations in the area of prediction of block vector ('BV') values improve encoding or decoding of blocks using intra block copy ('BC') prediction. For example, some of the innovations relate to use of a default BV predictor with a non-zero value. Other innovations relate to use of a selected one of multiple BV predictor candidates for a current block. Still other innovations relate to use of a skip mode in which a current intra-BC-predicted block uses a predicted BV value.

Growing community of inventors

Beijing, China

Feng Wu