Noise Limited Performance Of The Visual System.

Peter Zuidema; Jan J. Koenderink; Armand M.M . Lelkens; Andrea J. v . Doorn

doi:10.1117/12.934620

1 November 1982 Noise Limited Performance Of The Visual System.

Peter Zuidema, Jan J. Koenderink, Armand M.M . Lelkens, Andrea J. v . Doorn

Proceedings Volume 0375, Medical Imaging and Image Interpretation; (1982) https://doi.org/10.1117/12.934620
Event: 1st International Symposium on Medical Imaging and Image Interpretation, 1982, Berlin, Germany

Abstract

We present results of recent experiments concerning the processing of signals in the visual system under conditions limited by both natural (Poissonean) and artificial white noise. The results for natural noise limited conditions show that at any location in the visual field sampling apertures of different size are simultane-ously present. The dominant aperture size decreases with increasing irradiance. In the temporal domain it appeared that presentation of the signals over a longer period than 1 sec. did not improve the performance anymore. In the second part results of experiments with static and moving artificial noise are presented. It appears that the visual system is capable of processing almost all of the information in the image in order to set its threshold limited by noise. Detection of coherent movement of details within dynamic white noise can be performed with a signal to noise ratio of 1%. Models which describe these phenomena are discussed and their possible impact on image processing is suggested.

Citation Download Citation

Peter Zuidema, Jan J. Koenderink, Armand M.M . Lelkens, and Andrea J. v . Doorn "Noise Limited Performance Of The Visual System.", Proc. SPIE 0375, Medical Imaging and Image Interpretation, (1 November 1982); https://doi.org/10.1117/12.934620

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