A Matched Filter For The Visual Perception Of A Dynamic Display

Vanregemorter J.; Deconinck F.

doi:10.1117/12.947235

11 June 1985 A Matched Filter For The Visual Perception Of A Dynamic Display

Vanregemorter J., Deconinck F.

Proceedings Volume 0535, Application of Optical Instrumentation in Medicine XIII; (1985) https://doi.org/10.1117/12.947235
Event: 1985 Medical Imaging Conferences, 1985, California, United States

Abstract

The sensitivity of the human visual system to light intensity is time-frequency dependent, hence the perception of temporal changes in intensity depends on their frequency content. This can have great influence on the perceived signal to noise ratio of a dynamic image display. Our purpose was to develop a filter which would reduce noise frequencies to which we are more sensitive without affecting the useful information in the series. We developed a linear filter which creates a new series of images by adding three subsequent images multiplied by factors a , and a respectively. The optimal ratio 0/a for the reduction of the disturbing frequencies of noise depends on the speed of projection of the series. Because the optimisation is matched with the time properties of the human visual system, the effect of the filter can only be fully appreciated when the filtered series is presented on a movie display. The resulting effect is psychophysical and differs from observer to observer because of differences in individual visual systems.

Citation Download Citation

Vanregemorter J. and Deconinck F. "A Matched Filter For The Visual Perception Of A Dynamic Display", Proc. SPIE 0535, Application of Optical Instrumentation in Medicine XIII, (11 June 1985); https://doi.org/10.1117/12.947235

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