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With the evolution of internet and multimedia digital watermarking is gaining momentum. In day to day life for unwanted messages few people are affected .So watermarking is essential in every part of multimedia. In the paper we are proposing a new method of watermarking based on optimization technique. Performance improvement is got from biogeography algorithm. Threshold values and embedding strength forms the important parameters for improving the visual quality of watermarked images. Independent watermark is constructed and distributed separately based on biogeography algorithm.

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