The family of lapped orthogonal transforms is extended to include basis functions of arbitrary
length. Within this new family, the extended lapped transform (ELT) is introduced, as a …

We present a theory for the optimal bit allocation among quadtree (QT) segmentation,
displacement vector field (DVF), and displaced frame difference (DFD). The theory is …

The general factorization of a linear-phase paraunitary filter bank (LPPUFB) is revisited.
From this new perspective, a class of lapped orthogonal transforms with extended overlap …

With ever-increasing volumes of scientific data produced by high-performance computing
applications, significantly reducing data size is critical because of limited capacity of storage …

In this paper, two analytical methods for evaluating the coding efficiency of subband coding
are proposed, and optimization of filter coefficients of the perfect reconstruction FIR filter …

One of the most intriguing problems in video processing is the removal of the redundancy or
the compression of a video signal. There are a large number of applications which depend …

Quadrature mirror filter (QMF) banks are essential building blocks of a subband/transform
coder. Generally, one wants the filter bank to have the perfect reconstruction (PR) property1 …

DCT based image compression using blocks of size 32x32 is considered. An effective
method of bit-plane coding of quantized DCT coefficients is proposed. Parameters of post …

The scientists and engineers of today are relentless in their continuing study and analysis of
the world about us from the microcosm to the macrocosm. A central purpose of this study is …

We propose a novel postprocessing technique, based on the theory of projections onto
convex sets (POCS), to reduce the blocking artifacts in transform coded images. It is …