Abstract: A system and method are disclosed that provide a single layer bit stream syntax with advanced DCT data partitioning designed to combat bit error and packet losses during transmission. The bit stream syntax may be used as a single layer bit stream or may be used to de-multiplex video packets into base and enhancement layers in order to allow unequal error protection. One advantage of this syntax is that the de-multiplexing and merging of received video packets is made simple while allowing for flexible bit allocation for the base and enhancement layers.

Abstract: A method and system of partitioning and packetizing video data in an H.26L environment. An H.26L coding system is disclosed, comprising: a video coding layer (VCL) having a first partition mode and a second partition mode for partitioning video data, wherein the second partition mode separately partitions low and high frequency DCT coefficients; and a network adaptation layer (NAL) for packetizing data into a first and second packet, wherein the first packet is configured to contain all low frequency DCT coefficients and the second packet is configured to contain all high frequency DCT coefficients when the second partition mode is implemented by the VCL.

Abstract: 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.

Abstract: 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: 1 Γ ⁡ ( α , t * ) = 2 ⁢ ( 1 1 - ρ 2 ⁢ ⅇ t * - 1 ) , where ⁢ ⁢ Γ ⁡ ( α , β ) = ( ⅇ α - 1 ) ⁢ exp ⁢ { - α ⁡ [ d ⁡ ( α - δ ⁡ ( α ) ) - d ⁡ ( - β ) d ⁡ ( α -

Abstract: A scalable decoder system having a decoder reconstruction system, wherein the decoder reconstruction system comprises: an estimation algorithm 1 x ~ i , n e = a i , n + E Z ⁢ { d i , n ⁡ ( ρ ; x ~ i , n - 1 e + Z ) }

Abstract: An apparatus (220) and a method for partitioning data to improve error resilience for subband-encoded image data. Specifically, one or more segment markers (symbols) are entropy encoded along with the bitstream (payload) into a packet.

Abstract: To avoid generating visible artifacts in the image, such as those generated when mildly defective areas are not identified, a system and method for identifying and correcting defects in a digital image including adjusting the pixel values of pixels surrounding the defective pixels are disclosed. The method for correcting defects in a input digital image comprises the steps of identifying the defects to form at least one defect map, generating a region of interest for each defect map, correcting the values of the pixels in each defect map, and adjusting the values of the pixels in each region of interest.