The Project VISION: New Generation Video Communications has motivated the research work presented in this paper. However the calibration of the intrinsic and extrinsic parameters of a vision system, which is fundamental for Computer Vision algorithms, are required to extract three-dimensional information from an image, or a sequence of images, or a system that must establish the relation between two or more cameras. For many applications, these precautionary measures are sufficient. In regard to the positioning of the camera, this is performed so that the space within which the objects are located is perceived in the best possible way. Lenses with sufficient quality should be used so that the objects are not deformed in the image. The focal length, f, allows the elements that are being searched for, to be seen in the image with an adequate size for analysis. When a Computer Vision system is designed, a series of parameters must always be considered, which are decisive to the best possible appearance of objects in images with respect to posterior analysis algorithms.
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