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This paper presents a permutation-diffusion architecture based symmetric color image encryption scheme. In the permutation stage, the three color components of a color image are shuffled separately by using Arnold cat map, so as to eliminate the strong correlation among adjacent pixels. Then in the diffusion stage, the shuffled R, G, B components are masked by three pseudo-randomness key streams quantified...
This letter proposes a novel approach using vector roads to aid in generating seams for aerial image mosaicking. A representative seam of two adjacent images is extracted as follows. First, the vector roads in the overlapping area of adjacent images are overlaid with the straight skeleton of the overlapping area to build a weighted graph . Dijkstra's algorithm is then applied to find the lowest...
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