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In this paper, we present a high-capacity watermarking scheme for color images by using the idea of L2-Norm centroid. Based on spatial domain, the proposed scheme can effectively embed a secret watermark in a host image. Simulations demonstrate that the marked images generated by the proposed watermarking scheme are tolerant of versatile attacks such as color reduction, compression, cropping, blurring,...
In this paper, we propose a lossless data hiding based on smart boundary adjustment approach. More specifically, by preserving either the minimum or the maximum pixel values of the blocks, data bits can be effectively embedded into the blocks without any occurrence of overflow and underflow. Experiments confirm that perceived quality is good and the payload is large while our peak signal-to-noise...
With the advance in the medical image from photographic ï¬lm (analogy) to digital ï¬le, how to avoid medical image modiï¬ed by malice and hide the patient's information into their medical image has become the promising research issue. It is difï¬cult to embed the information of patient to medical images because most pixels of this kind of images are close to black or white. In this paper, an effective...
In this paper, we propose a new loss less data hiding method by the adaptive coefficient-bias (ACB) algorithm. The proposed ACB algorithm involves two main steps: block-mean removal and pixel isolating. The block-mean removal first generates the difference blocks, which are obtained by subtracting each pixel of the host block from the predicted mean. Then, the pixel isolating minimizes distortion...
A simple and effective lossless data hiding algorithm is presented. Based on integer wavelet transform (IWT), a secret message is embedded in the three high subbands of IWT domain by the proposed coefficient-bias algorithm. More specifically, to provide a higher hidden space without severe distortion, only the coefficients of each block that located in a predetermined interval are utilized to hide...
This paper proposes an effective method for video object segmentation without background construction. In the proposed method, the coarse foreground extraction and fine foreground extraction are obtained using the motion information, edge information, and gradient-variation information which are first evaluated by two successive frames. Next, the video object is extracted using the horizontal/vertical...
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,...
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