Multiple description coding (MDC) with side information (SI) at the receiver is particularly relevant for robust transmission in sensor networks where correlated data is being transmitted to a common receiver, as well as for robust video compression. The rate-distortion region for this problem has been established in (Vaishampayan 1993). Here, we focus on the design of a practical MDC scheme wi...

Watermarking in the Joint Photographic Experts Group (JPEG)2000 coding pipeline is investigated in this paper. A joint quantization and watermarking method based on trellis-coded quantization (TCQ) is proposed to reliably embed data during the quantization stage of the JPEG2000 part 2 codec. The central contribution of this work is the use of a single quantization module to jointly perform quan...

In this paper, a subband coding system which dynamically adapts to the local orientation of image features is investigated. In particular, the re-orientation scheme proposed in [1] is used in conjunction with a separable octave-band subband decomposition. This is then followed by e cient coding techniques such embedded zerotrees, trellis coded quantization, and stackrun coding. The coded images...

This paper presents a multiresolution adaptive vector quantization and perceptual based multiview image coding scheme. It decorrelates the input views into a number of subbands using a lifting based wavelet transform. The coefficients in the same subbands of different views are divided into vectors and then joined together. The resulting vectors are then vector quantized using an adaptive vecto...

The robustness property can be added to DSC system at the expense of reducing performance, i.e., increasing the sumrate. The aim of designing robust DSC schemes is to trade off between system robustness and compression efficiency. In this paper, after deriving an inner bound on the rate–distortion region for the quadratic Gaussian MDC based RDSC system with two encoders, the structure of the RD...

In this paper a new frequency domain approach suitable for low-delay wideband speech coding is proposed. Working in the context of residual speech coders, the proposed technique performs a decomposihon of the D I T of the target vector, (the input speech after the subtraction of the zero input response signal), as the product of the DFT of the impulse response of the LPC synthesis filter and a ...

This paper presents a Lossy image compression technique which is combination of discrete wavelet transform (DWT), Thresholding, Vector Quantization (VQ) and Huffman coding. Proposed method is as follows, First, DWT is performed on the original image then Globle Thresholding technique is applied and resulting coefficients are then vector quantized. VQ indices are Huffman coded to increase the co...

Trellis coded quantization, both scalar and vector, improves upon traditional trellis encoded systems by labelling the trellis branches with entire subsets rather than with individual reproduction levels. Trellis Coded Vector Quantization (TCVQ) was introduced as an effective low-complexity source coding technique which achieves rate-distortion performance superior to many conventional optimal ...

In order to improve the picture quality, the region of interest within video sequence should be handled differently to regions which are of less interest. Generally the region of interest is coded with smaller quantization step-size to give higher picture quality, compared with the remainder of the image. However the abrupt change picture quality variation on the boundary of regions of interest...