주파수 영역을 이용한 비디오 워터마킹에 관한 연구 = A Study on the Video Watermarking in Frequency domain

다국어 초록 (Multilingual Abstract)

Wavelet transformation which has special qualties of frequency domain and spatial domain is used for watermarking. In this paper, we compare and analyze a technique for embedding the watermark of visually recognizable patterns into the frequency domain of the digital video. In Kwon's method, each video frame is decomposed into four-level by DWT which reveals the characteristics of the human eyes and watermark is embedded into DWT coefficients using HVS. we study for the embedding and extraction of watermark key using wavelet in the luminance signal in order to implement the copyright for image MPEG First, the original image is analyzed into frequency domain by discrete wavelet transform. The RSA public key of the coded target is RUN parameter of VLC. a digital video watermarking algorithm is analyze that uses HVS and DWT.