Abstract
This paper presents an efficient implementation on a conventional computer architecture of some early visual processing that occurs in the eye. A retinal spatiotemporal recursive filter, based on an extended version of Mead's model, has been implemented by means of an original algorithm, much faster than FFT (18 times for a 256 × 256 image). Various realistic aspects have been added, particularly non-homogeneous filtering by the crystalline lens, photoreceptor coupling, chromatic sampling and digital filtering with an irregular spatial sampling. The integration of these unconventional components of early visual organisation into a single coherent system leads to the development of clever digital realisations: among the many possibilities of this simulation tool, three of them are illustrated, concerning space-variant and colour processing. The program, written in the C language, allows synthesis, filtering and the display of colour images with moving objects.
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© 1993 Springer-Verlag Berlin Heidelberg
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Beaudot, W., Palagi, P., Hérault, J. (1993). Realistic simulation tool for early visual processing including space, time and colour data. In: Mira, J., Cabestany, J., Prieto, A. (eds) New Trends in Neural Computation. IWANN 1993. Lecture Notes in Computer Science, vol 686. Springer, Berlin, Heidelberg. https://doi.org/10.1007/3-540-56798-4_175
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DOI: https://doi.org/10.1007/3-540-56798-4_175
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