Design of a reading test for low-vision image warping

David S. Loshin; Janice Wensveen; Richard D. Juday; R. Shane Barton

doi:10.1117/12.150982

27 August 1993 Design of a reading test for low-vision image warping

David S. Loshin, Janice Wensveen, Richard D. Juday, R. Shane Barton

Proceedings Volume 1961, Visual Information Processing II; (1993) https://doi.org/10.1117/12.150982
Event: Optical Engineering and Photonics in Aerospace Sensing, 1993, Orlando, FL, United States

Abstract

NASA and the University of Houston College of Optometry are examining the efficacy of image warping as a possible prosthesis for at least two forms of low vision -- maculopathy and retinitis pigmentosa. Before incurring the expense of reducing the concept to practice, one would wish to have confidence that a worthwhile improvement in visual function would result. NASA's Programmable Remapper (PR) can warp an input image onto arbitrary geometric coordinate systems at full video rate, and it has recently been upgraded to accept computer- generated video text. We have integrated the Remapper with an SRI eye tracker to simulate visual malfunction in normal observers. A reading performance test has been developed to determine if the proposed warpings yield an increase in visual function; i.e., reading speed. We describe the preliminary experimental results of this reading test with a simulated central field defect with and without remapped images.

Citation Download Citation

David S. Loshin, Janice Wensveen, Richard D. Juday, and R. Shane Barton "Design of a reading test for low-vision image warping", Proc. SPIE 1961, Visual Information Processing II, (27 August 1993); https://doi.org/10.1117/12.150982

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