ISAAC-I: A Color-Sensing Robot

Homer B. Tilton

doi:10.1117/12.956893

22 December 1978 ISAAC-I: A Color-Sensing Robot

Homer B. Tilton

Proceedings Volume 0162, Visual Simulation and Image Realism I; (1978) https://doi.org/10.1117/12.956893
Event: 22nd Annual Technical Symposium, 1978, San Diego, United States

Abstract

The design of present-day color-sensing devices (such as color TV cameras) is generally based on Young's 1801 trichromatic theory as quantified in the CIE system of color mixture. But the actual makeup of the human color-vision mechanism remains unknown to this day. Indeed - contrary to what the trichromatic theory hypothesizes - it now seems likely that the human color-vision system operates on a brightness-hue-saturation basis instead of a red-green-blue basis. For example, there exists significant evidence that neural hue signals originate in the retina from direct rod-cone interaction. ISAAC-I is a simple opto-electronic device which models a possible neural mechanism for generating such retinal hue signals. The model produces a pulse train simulating the neural signal. The frequency of this pulse train varies with changes in stimulus wavelength in a manner similar to the way retinal hue signals are believed to vary. Thus these signals represent primitive hue information extracted from the stimulus. A demonstration is given (during the course of this presentation) of ISAAC-I in action. Different colored stimuli are presented to ISAAC and the audience. ISAAC's resulting "neural" signal is presented aurally to the audience via the PA system.

Citation Download Citation

Homer B. Tilton "ISAAC-I: A Color-Sensing Robot", Proc. SPIE 0162, Visual Simulation and Image Realism I, (22 December 1978); https://doi.org/10.1117/12.956893

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