In this paper, an algorithm for multiple watermarking based on discrete wavelet transforms
(DWT), discrete cosine transform (DCT) and singular value decomposition (SVD) has been …

This paper presents a new technique for color enhancement in the compressed domain. The
proposed technique is simple but more effective than some of the existing techniques …

Blocking artifacts continue to be among the most serious defects that occur in images and
video streams compressed to low bit rates using block discrete cosine transform (DCT) …

One of the major drawbacks of the block-based DCT compression methods is that they may
result in visible artifacts at block boundaries due to coarse quantization of the coefficients …

A method for DCT-domain blind measurement of blocking artifacts is proposed. By
constituting a new block across any two adjacent blocks, the blocking artifact is modeled as …

Image compression is a very important issue for several applications in the area of
multimedia communications, the objective being reduction of storage and transmission …

We propose an effective deblocking scheme with extremely low computational complexity.
The algorithm involves three parts: local ac coefficient regularization (ACR) of shifted blocks …

Transform coding using the discrete cosine transform is one of the most popular techniques
for image and video compression. However, at low bit rates, the coded images suffer from …

The block-based discrete cosine transform (BDCT) is often used in image and video coding.
It may introduce block artifacts at low data rates that manifest themselves as an annoying …

The reconstructed images from highly compressed data have noticeable image
degradations, such as blocking artifacts near the block boundaries. Post-processing …