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Controllo dell'Ambiente mediante Filtraggio Spaziale Adattativo applicato alla Differenza di Immagini
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Steganography Effects in various formats of Images. A preliminary study
No full textIn this paper the effects of steganography in different image formats (BMP, GIF, JPEG and DWT-coded) are studied. With respect to these formats, we try to give an answer to the following questions: “how many bits of noise (i.e. the textual secret message) can be injected without perceptually deteriorating the quality of the image?” and “how and where to inject these bits in order to achieve the best trade-off in terms of length of the textual message and preserved quality of the image?”
Identification of bank robbers by means of videotape recorded morphometric images: esperience gained with 162 cases
No full textOn human face identification methods
No full textHuman face identification often requires an approach based on several computer vision methods, able to solve step-by-step the problem of the comparison of subjects captured in bidimensional recorded images. These methods consist of identifying and measuring facial features, generally anthropometric face structures. After presentation of the problem and the basic comparison techniques, some methods to evaluate the identification indices are shown, with the respective considerations about their discrimination capacity
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