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Data Hiding in Computer-Generated Stained Glass Images and Its Applications to Information Protection

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Fig. 1 Computer-generated oil-painting images. (a) The source painting.
Fig. 2 Art images generated by computers. (a) A painting in Sistine Chapel by Michelangelo
Fig. 6 Image preprocessing before region growing. (a) A source image, (b) a quantized image of (a)
Fig. 7 Structure and expansion of the glass region tree. (a) A tree of a glass region; (b)–(f) Examples for illustrating details of Steps 2 and 3 in Algorithm 1
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