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Over the past two decades or so, a great deal of research has been devoted to the problem of filtering and blocking adult image contents from Web indexes and browsers. In this work, we present a system to automatically detect human nudes in color images. The operation principle of the proposed system is as follows: First, skin-colored pixels in a given image are identified and marked using our proposed skin detection algorithm. Then, the skin regions are fed into a specialized geometrical analyzer which attempts to find human figures based on geometrical constraints on human body structure....

The need is always found for effective substitution of chemical and synthetic food preservatives with effective and powerful alternatives from natural origins. Chitosan is an amazing biopolymer with a very wide range of applications. Chitosan could be produced microbiologically from the fungal cell walls. The nature, occurrence, antimicrobial activity and other potential applications of chitosan are illustrated in this book. Successful production of chitosan from Aspergillus brasiliensis mycelia, using agricultural waste as a substrate, is pointed out in this study. The application of...