Patent
High frequency emphasis in decoding of encoded signals
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TLDR
In this paper, a decoder adapted to generate an intermediate decoded version of a video frame from an encoded version of the video frame, determine either an amount of high frequency basis functions or coefficients below a quantization threshold for at least one block of the frame, and generate a final decoding version of video frame based at least in part on the intermediate decoding version and the determined amount(s) for the one or more blocks.Abstract:
A decoder adapted to generate an intermediate decoded version of a video frame from an encoded version of the video frame, determine either an amount of high frequency basis functions or coefficients below a quantization threshold for at least one block of the video frame, and generate a final decoded version of the video frame based at least in part on the intermediate decoded version of the video frame and the determined amount(s) for the one or more blocks of the video frame, is disclosed. In various embodiments, the decoder may be incorporated as a part of a video system.read more
Citations
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References
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TL;DR: In this paper, a method and system of encoding and decoding digital video content is proposed, which comprises a stream of pictures which can each be intra, predicted, or bi-predicted pictures.
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Adaptive quantization compatible with the JPEG baseline sequential mode
TL;DR: In this paper, pixel blocks of an input image are type classified based on an analysis of pixel values for each respective pixel block, and a quantization modification process thresholds and/or quantizes the resulting DCT coefficients based on the type classification of the respective pixel blocks.
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Apparatus for concealing errors in a digital video processing system
Huifang Sun,Joel Walter Zdepski +1 more
TL;DR: In this article, a decoder/decompressor system is used to decode and decompress the transmitted video data according to a predetermined sequence and applies the decompressed video data to a memory for subsequent display or recording.
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Method and apparatus for concealing errors in a digital television
TL;DR: In this article, a method and apparatus for concealing errors occurring during the transmission and reception of digital television signals is presented. But the method is not suitable for the case of video streaming.
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Method and apparatus for improved video decompression by selection of IDCT method based on image characteristics
TL;DR: In this paper, a video decoding system examines a block of DCT coefficients prior to computation of an inverse discrete cosine transform (IDCT) to determine the number of nonzero coefficients.