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The project has recently expanded to investigate the inverse endeavor; that is, the incorporation of camera models, eye models, and actual patient eye data for the accurate rendering of compu ter graphics imagery. Our goal is to incorporate accurate optics into the rendering process using into the rendering process using physical and physiological models, physical and physiological models, including data about the actual eye of an individual.
We are investigating camera models and eye models as well as the use of corneal topographic data obtained from videokeratography. To this end, we are exploring two independent approaches. In the first approach, we convolve an image with a point spread function (PSF),using high dynamic range (HDR) source images to achieve a much more realistic esti mate of glare and loss of contrast. The second approach traces rays from a retina or film plane through a system of lenses and into a three-dimensional scene. Both of these approaches can be used for camera models, eye models, and actual corneal topographic data. When using an eye model or actual corneal data in the second approach, we incorporate an accurate distribution of photo-receptors, with the density of sampling decreasing away from the foveal region of the retina. We present initial results from both of these approaches.