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Visual cryptography is process to hide information of digital images which has become an active area of research during the last decades. Because of intrinsic features of images (i.e. bulk data capacity, high redundancy etc) encryption of images is different from that of texts and it is generally difficult to handle by traditional methods. Present study proposes a novel symmetric image encryption...
This article proposes a color image quantization algorithm based on Gaussian Particle Swarm Optimization (GPSO). PSO is a population-based optimization algorithm modeled after the simulation of social behavior of swarms to find near-optimal solutions. The algorithm randomly initializes each particle in the swarm to contain K centroids (i.e. color triplets). The K-means clustering algorithm is then...
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