Imperceptible Watermarking Algorithm Using Block LSB Scheme for Color Images
ABSTRACT
It is well known that now a dayâ„¢s more and more people are publishing papers, books, videos and photographs on the internet. The numerous properties of digital media have made copyrights violations easy. The simple replication and transmission as well as file sharing are just some examples. To overcome that the proposed technique is imperceptible watermarking algorithm using spatial domain block LSB scheme for color image authentication. Watermark i ....etc

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Abstract
Color constancy is the skill by which it is possible to tell the color of an object even under a colored light. I inter-
pret the color of an object as its color under a fixed canonical light, rather than as a surface reflectance function.
This leads to an analysis that shows two distinct sets of circumstances under which color constancy is possible.
In this framework, color constancy requires estimating the illuminant under which the image was taken. The estimate
is then used to choose one of a set of linear maps, which is appli ....etc

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This paper presents a zero tree coding method for color images that uses no lists during encoding and decoding,permitting the omission of the lists requirement in Said and Pearlman's Set Partitioning In Hierarchical Trees (SPIHT) algorithm . Without the lists, the memory requirement in a VLSI implementation is reduced significantly. This coding algorithm is also developed to reduce the circuit complexity of an implementation. Our experimental results show only a minor reduction of PSNR values when compared with the PSNR values obtained by th ....etc

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Color Management with Mac OS X Tiger




Introduction

Color has the ability to communicate, to please, to excite, and to engage. Color makes
a difference—often a dramatic difference—in your photographs, your graphics, and
your layouts. Getting color right early in the workflow, and keeping it right to the end,
is increasingly critical in the fast-paced, deadline-driven digital world. Yet photographers
and designers are frequently dismayed when they print ....etc

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We have done a detailed analysis of the visual properties of the HSV (Hue, Saturation and Intensity Value) color space and Human visual system. Using the results of these analyses, we determine relative importance of hue and intensity based on the saturation of an image pixel with respect to rod and cone cells excitation of retina. We effectively apply this method to the generation of a color histogram and use it for content-based image retrieval applications. A web-based system has been developed for demonstrating our work ....etc

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