Digital Watermarking Based on Adaptive Threshold and Weighting Factor Decision Method

적응적 임계치와 가중치 결정 방법에 기반한 디지털 워터마킹

In this paper, we propose new watermarking technique using weighting factor decision method in the watermark embedding step and adaptive threshold decision method in the watermark extracting step. In our method, we are determined weighting factor in simple by calculating distance between pixel coefficient and neighborhood pixel coefficients and threshold is adaptively determined by searching the minimized extract error value using histogram of difference value.