Agora Lab, Inc.

Dts, Inc.

Zhonghou Zheng

Sheng Zhong

Wei Dai

Shie Qian

Zesen Zhuang

Qianzong Chen

Jiali Li

Jian Lou

Zhenyong Chen

A method includes maintaining a phase-out list that includes tiles of a current viewport of a wide-angle image that are predicted to no longer be in the viewport after a time duration d from a current time t. Tiles predicted to be viewed at a time that is later than the current time t are obtained. Those of the predicted tiles that are not in a receiver list are added to the receiver list. Tiles that form a current viewing area are rendered using the receiver list. Tiles of the receiver list and a phase-out list are associated with respective display times. Rendering the tiles includes decoding and displaying tiles of the receiver list having display times that are not larger than the current time t and stopping decoding and displaying tiles of the phase-out list associated with the display times that are not larger than the current time t.

Real-time wide-angle video communication system

A decoding method includes: decoding from the video bitstream a prediction status parameter indicative of whether SOP is enabled; if the SOP is enabled, determining a SOP type indicative of a specific operation for predicting a current picture of the video bitstream; and determining a predicted picture by applying the specific operation to at least one of a reference picture for the current picture and the current picture, in which the specific operation includes at least one of rotation and zoom. An encoding method includes: if SOP is enabled, determining SOP data indicative of a specific operation for predicting a current picture of a video sequence; determining a predicted picture by applying the specific operation to at least one of a reference picture for the current picture and the current picture, in which the specific operation includes at least one of rotation and zoom; and encoding the SOP data.

Specific operation prediction in video compression

An audio system is provided that employs time-frequency analysis and/or synthesis techniques for processing audio obtained from a microphone array. These time-frequency analysis/synthesis techniques can be more robust, provide better spatial resolution, and have less computational complexity than existing adaptive filter implementations. The time-frequency techniques can be implemented for dual microphone arrays or for microphone arrays having more than two microphones. Many different time-frequency techniques may be used in the audio system. As one example, the Gabor transform may be used to analyze time and frequency components of audio signals obtained from the microphone array.

Microphone array processing system

Growing community of inventors

Shanghai, China

Zhonghou Zheng