Cheng-Han Yang

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The increasing popularity of the internet means that digital multimedia are transmitted more rapidly and easily. And people are very aware for media ownership. However, digital watermarking is an efficient and promising means to protect intellectual properties. Based on the intellectual property attention in the information era, how to protect the personal(More)
In this paper, we propose an adaptive video watermarking algorithm based on a pseudo 3D DCT to insert the high transparency and slight distortion messages to resist the attacks. The watermark is mainly inserted into the uncompressed domain by adjusting the correlation between DCT coefficients of the selected blocks, and the watermark extraction is blind,(More)
In this paper, we propose an effective video embedded watermarking technique based on DCT domain with high transparency and slight distortion. The watermark is mainly embedded into the uncompressed domain by adjusting the correlation between DCT coefficients of the selected blocks, and it can be detected without the original video data. The system contains(More)
In this paper, we propose an effective watermarking algorithm based on a pseudo 3D DCT and quantization index modulation for vide against the attacks. The watermark is principally inserted into the uncompressed domain by adjusting the correlation between DCT coefficients of the selected blocks, and the extraction of watermark is blind. This approach(More)
In this study, Rubisco-based engineered Escherichia coli, containing two heterologous enzymes of ribulose-1,5-bisphosphate carboxylase/oxygenase (Rubisco) and phosphoribulokinase (PrkA), has been shown to be capable of the in situ recycling of carbon dioxide (CO2) during glycolysis. Two alternative approaches have been proposed to further enhance the carbon(More)
The detection and correction of erroneous Chi-nese characters is an important problem in many applications. This paper proposed an automatic method for correcting erroneous Chi-nese characters. The method is divided into two parts, which separately handle two types of erroneous character: the occurrence of an erroneous character in a word length of one, and(More)
Emergence is the visual phenomenon by which humans recognize the objects in a seemingly noisy image through aggregating information from meaningless pieces and perceiving a whole that is meaningful. Such an unique mental skill renders emergence an effective scheme to tell humans and machines apart. Images that are detectable by human but difficult for an(More)