"Simulation par ordinateur." . . "Velocity." . . "vision 3D." . . "Perception visuelle du mouvement Informatique." . . "Perception visuelle du mouvement - Informatique." . "Perception visuelle du mouvement." . . "Computação aplicada." . . "Neurophysiologie." . . "Ambiguity." . . . . "image 2D." . . "Bionics." . . "Contours." . . "Visionics." . . "Visuelle Wahrnehmung." . . "MASSACHUSETTS INST OF TECH CAMBRIDGE ARTIFICIAL INTELLIGENCE LAB." . . "Motion." . . "Bewegungssehen." . . "Pattern recognition." . . "perception visuelle." . . "Image processing." . . "mouvement - mesure simulation par ordinateur vision (physiologie)" . . . . . . . . . . "The analysis of visual motion divides naturally into two stages: the first is the measurement of motion, for example, the assignment of direction and magnitude of velocity to elements in the image, on the basis of the changing intensity pattern; the second is the use of motion measurements, for example, to separate the scene into distinct objects, and infer their three-dimensional structure. In this paper, we present a computational study of the measurement of motion. Similar to other visual processes, the motion of elements is not determined uniquely by information in the changing image; additional constraint is required to compute a unique velocity filed. Given this global ambiguity of motion. Local measurements from the changing image, such as those provided by directionally-selective simple cells in primate visual cortex, cannot possibly specify a unique local velocity vector, and in fact, specify only one component of velocity. Computation of the full two-dimensional velocity field requires the integration of local motion measurements, either over an area, or along contours in the image. We will examine possible algorithms for computing motion, based on a range of additional constraints. Finally, we will present implications for the biological computation of motion."@en . . . . . . . . . . "The measurement of visual motion"@en . "The measurement of visual motion" . . . . . . . . . . . . . . . . . . . . . . . . "Thèses et écrits académiques" . . . . . . . . . . . . "The Measurement of Visual Motion"@en . . . "Optical images." . . "simulation." . . "Computersimulation." . . "Optics." . . "Bewegungsmessung." . . "analyse mouvement." . .