A transcoder architecture that provides the lowest possible complexity with a small error, eg,
for converting an MPEG-2 bitstream into an MPEG-4 bitstream. The transcoder reads header …

In this paper, a systematic method for developing a binary version of a given transform by
using the Walsh-Hadamard transform (WHT) is proposed. The resulting transform …

Methods and apparatus for performing 2: 1 downscaling on video data are provided. At least
one input matrix of NXN (eg, N= 16) Discrete Cosine Transform (DCT) coefficients is formed …

Hierarchical multiresolution analysis is an important tool for the analysis of signals. Since
this multiresolution representation provides a pyramid like framework for representing …

We propose an efficient method for separable symmetric linear filtering in the discrete cosine
transform (DCT) domain. First, separable two-dimensional (2-D) linear filtering is …

Tools for the interpretation of significant events from video and video clip adaptation can
effectively support automatic extraction and distribution of relevant content from video …

We derive a modified version of the cubic convolution scaler to enlarge or reduce the size of
digital images with arbitrary ratio. To enhance the edge information of the scaled image and …

This paper proposes a fast and efficient transcoding algorithm from MPEG-2 video to MPEG-
1 video where spatial resolution reduction is involved. We use quantization parameters …

Disclosed is a method comprising:(a) receiving a layer 0 bitstream, the layer 0 bitstream
including coding informa tion for the layer 0 bitstream;(b) receiving a layer 1 bitstream, the …

This paper proposes to employ the discrete cosine transform (DCT) to perform the empirical
mode decomposition (EMD) based hierarchical multiresolution analysis. This can simplify …