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PERFORMANCE ANALYSIS OF A BLOCK COMPLEXITY BASED DATA EMBEDDING (ABCDE) FOR COLOR IMAGES IN SPATIAL DOMAIN

The watermarking techniques for grayscale images can be easily extended to handle color images, for this purpose, watermark casting is done by generating three different watermark patterns SR, SG, SB, one for each RGB channel and modifying for each channel, the intensity of the pixels that belong to the corresponding sets AR, AG, AB. The watermark casting and detection procedures for color images are exactly the same as for the corresponding procedures for grayscale images. Instead of marking the three R, G, B components we can choose to mark the luminance and the chrominance components of the image. In this paper A Block Complexity based Data Embedding (ABCDE) watermarking technique, for color images in Spatial Domain, is considered for implementation and the performance analysis is done on the basis of different performance measures for various types and formats of images.