Patent
Camera parameter-assisted video encoding
Liang Liang,Szepo R. Hung,Ruben M. Velarde,Ying Xie Noyes,Haiyin Wang +4 more
- 05 May 2010
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TL;DR: In this paper, the authors describe techniques for improving functionalities of a back-end device, e.g., a video encoder, using parameters detected by a front-end devices, such as a video camera.
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Abstract: This disclosure describes techniques for improving functionalities of a back-end device, e.g., a video encoder, using parameters detected by a front-end device, e.g., a video camera. The techniques may involve detecting a scene change in a captured frame, based on one or more parameters of auto exposure (AE), auto white balance (AWB), and auto focus (AF) functions. If a scene change is detected in a captured frame, a video processing device, which may be a stand-alone device, or may be integrated into one of the front-end or back-end devices, provides an indication of the scene change. The video encoder interprets the signal as a trigger to encode the frame indicated as the frame where a scene change occurred as a reference I frame.
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Citations
Patent
Adaptive auto exposure adjustment
Douglas Scott Price,Xiaosong Zhou,Hsi-Jung Wu +2 more
- 25 Jul 2012
TL;DR: In this article, a camera with auto exposure control may capture and output frames of video and a pre-processor may estimate brightness of the frames of the video output from the camera, and when the rate of brightness change is lower than a predetermined threshold, the controller may reduce sensitivity of the auto-exposure control.
47
Patent
Control of video encoding based on image capture parameters
Cheolhong An,Liang Liang,Szepo Robert Hung +2 more
- 26 Oct 2010
TL;DR: In this article, the authors describe techniques for improving functionalities of a video encoder using parameters detected and estimated by a front-end device, e.g., a video camera.
44
Patent
System and method for providing and transmitting condensed streaming content
Hsin-Hua Lee,Hui-Ping Kuo,Jen-Yu Yu,Wen-Fang Cheng +3 more
- 10 Sep 2012
TL;DR: A stream condense unit coupled to a streaming server and a client player is provided in this paper, which includes a streaming data input unit, a stream content analysis unit and a frame timestamp adjust unit.
28
Patent
Encoding of video stream based on scene type
Rodolfo Vargas Guerrero
- 26 Jan 2012
TL;DR: In this article, an encoder for encoding a video stream or an image is described, where the encoder receives an input video stream and outputs an encoded video stream that can be decoded at a decoder to recover, at least approximately, an instance of the video stream.
21
Patent
Adaptive bit rate control based on scenes
Guerrero Rodolfo Vargas
- 26 Jan 2012
TL;DR: An encoder for encoding a video stream is described in this paper, where the encoder receives scene boundary information that indicates positions in the input video stream where scene transitions occur and target bit rate for each scene.
17
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