Effect of Laplacian of Gaussian Filter on Watermark Retrieval in Spatial domain Watermarking

摘要: Laplacian of Gaussian filter (LOG) is an enhancement with less sensitivity to noise that used for sharpening image. The watermark added as a the host image in watermarking. principal objective this paper enumerate beneficial effects LOG on retrieval spatial domain This applied before extraction algorithm watermarked which might be attacked. distinction between and original increased by filter. Thus, probability detection augmented it. Several processing attacks done evaluate effect correlation based recovery statistically significant. rate addition blurring significant compare similar method. However, improvement also better other common attacks.