Koninklijke Philips Corporation N.v.

Jong Chul Ye

Yingwei Chen

A system and method are disclosed that provide an advanced design of coded video packets using a resynchronization maker for video transmission applications. The resynchronization marker has a fixed ranged bit length within each video object plane or video frame and is cyclically updated video frame by video frame. This coded video packet structure allows decoders to automatically find the video object plane boundary without additional bit stream overhead. This has a particular advantage when a video object plane header is lost during transmission.

Cyclic resynchronization marker for error tolerate video coding

A video coding system and method for coding an input frame in which the evolution of discrete cosine transform (DCT) coefficients is modeled as a Laplace-Markov process, the system comprising: a base layer processing system for generating a base layer reconstruction; an enhancement layer processing system for generating an enhancement layer reconstruction; and an entropy constrained scalar quantizer (ECSQ) system for descritizing a prediction residual between the input frame and an estimation theoretic (ET) prediction output; wherein the ECSQ system utilizes an ECSQ that comprises a uniform threshold quantizer with a deadzone size defined by the equation: 

Entropy constrained scalar quantizer for a Laplace-Markov source

A system and method are disclosed that provide a simple and efficient layered video coding technique using a backward adaptive rate-distortion optimized data partitioning (RD-DP) of DCT coefficients. The video coding system may include an rate-distortion optimized data partitioning encoder and decoder. The RD-DP encoder adapts the partition point block-by-block which greatly improves the coding efficiency of the base layer bit stream without explicit transmission thereby saving the bandwidth significantly. The RD-DP decoder can also find the partition location in backward-fashion from the decoded data.

System and method for rate-distortion optimized data partitioning for video coding using backward adaptation

A scalable decoder system having a decoder reconstruction system, wherein the decoder reconstruction system comprises: an estimation algorithmfor estimating a lost discrete cosine transform (DCT) coefficient, which incorporates the quantization noise of previous enhancement layer data into the expectation, wherein the estimation algorithm includes a density distribution dependent on at least one unknown parameter {circumflex over (&#x3b1;)}; and a parameter estimation algorithm for estimating {circumflex over (&#x3b1;)}according to the equation:wherein bdenotes each of a set of quantizer decision levels l, and {circumflex over (P)}is the sum of a set of a normalized frequency of occurrences of data quantized to each quantizer decision level 1,2, . . . , l.

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Croton-on-Hudson, NY, United States of America

Jong Chul Ye