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In this paper, we propose a watermarking scheme with high perceived quality for color images by using the Euclidean distance of radius-weighted mean (RWM) and centroid. Based on spatial domain, the proposed watermarking scheme can effectively embed a secret message in host images. Simulations demonstrate that the marked images generated by the proposed watermarking scheme are tolerant of versatile...
This paper proposes a robust video watermarking for H.264/AVC using block polarity and AC correlation schemes. In the proposed method, the intra frames are used for watermarking embedding and protection. Block polarity is obtained using the nonzero quantized DC coefficient in each integer DCT block. Then, the selective block polarity of DCT block is used to perform the Intra prediction modes for luminance...
A DCT-based digital watermarking by using quotient-embedding scheme with smart arrangement technique is proposed. To increase the hidden capacity while maintaining the robustness of the proposed method, input data are first bundled to a set of 4-octet with a smart arrangement and then embedded in the predetermined low- and middle-frequency coefficients of a DCT block. Simulations show that the mixed...
A simple digital watermarking based on integer wavelet transform (IWT) is proposed. Instead of hiding data bits directly to the blocks, we employ adaptive bit-labeling scheme to a block so that it can be used to carry a data bit 0 or 1. Simulations show that the proposed method robustness against manipulations such as JPEG2000, JPEG, cropping, (color) quantization, noise additions, low-pass filtering,...
A simple watermarking scheme based on the discrete cosine transform (DCT) is proposed. To increase the hidden capacity while maintaining the robustness of the proposed method, the authors use quotient-embedding algorithm to hide the secret message in the selected low-frequency coefficients of a DCT block. Simulations show that the stego-images generated by the proposed method do robustness against...
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