Secure and robust digital watermarking on grey level images

G RoslineNesaKumari, B VijayaKumar… - International Journal of …, 2009 - earticle.net
A good watermarking technique embeds information into a carrier image with virtually
imperceptible modification of the image. The present paper found a novel fact that by
inserting the watermark using Least Significant Bit (LSB), the grey value of the image pixel
either remains same or increases or decreases to one. The present paper is focused on this
issue and found that such ambiguity of grey level values by LSB method comes between
successive even and odd grey level values only. The proposed method inserts hidden …
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