Description: The efficiency of perceptual coding in compressing color
images relies on the estimation of perceptual redundancy.
In this paper, a color image coder is proposed for perceptually
lossless image compression which shapes the coding
error as a part of perceptual redundancy. The perceptual
redundancy inherent in each pixel of a color image is
estimated in terms of a triple of values, one for each color
channel, as a detection threshold for distortion. Platform: |
Size: 266240 |
Author:SKP |
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Description: In this paper we propose a watermarking system that
uses the biorthogonal discrete wavelet transform, DWT and the
message is encoded before embedding. The proposed
watermarking method is very simple, implying four steps: turbo
coding of the watermark message, embedding the turbo coded
watermark into the host image using a perceptual mask,
extraction of the turbo coded watermark from the watermarked,
possibly corrupted image, and turbo decoding of the watermark.
The goal of this paper is the association of the DWT and duobinary turbo codes. Some simulation examples prove the
performance of the proposed watermarking method- In this paper we propose a watermarking system that
uses the biorthogonal discrete wavelet transform, DWT and the
message is encoded before embedding. The proposed
watermarking method is very simple, implying four steps: turbo
coding of the watermark message, embedding the turbo coded
watermark into the host image using a perceptual mask,
extraction of the turbo coded watermark from the watermarked,
possibly corrupted image, and turbo decoding of the watermark.
The goal of this paper is the association of the DWT and duobinary turbo codes. Some simulation examples prove the
performance of the proposed watermarking method Platform: |
Size: 314368 |
Author:atefe |
Hits:
Search - Perceptual Image Coding