Television – Special applications – Aid for the blind
Patent
1996-07-24
2000-12-12
Lee, Young
Television
Special applications
Aid for the blind
H04N 947
Patent
active
06160576&
ABSTRACT:
An image processing device compensates an original image for helping deteriorated human vision characteristics and displays the compensated image. Declines in a spectral sensitivity characteristic is compensated for by multiplying a brightness value of the original image by an inverse characteristic 1/A of a relative spectral sensitivity characteristic A in reference to a predetermined spectral sensitivity characteristic of a standard person. The first compensated image q(x,y) for defocus, or declines in accommodation characteristic, is obtained by a convolution integral of an original input image f(x,y) and a function j(x,y). The second compensated image m(x,y) for declines in sensitivity to cut-off frequency is obtained by a convolution integral of an original input image q(x,y) and the function p(x,y). The j and the p vary utilizing a radius of a blurred image and the cut-off frequency as a parameter, respectively. The image processing device enables an observer to recognize the original image as it is or as observed by the standard person, regardless of age or individual variations.
REFERENCES:
patent: 4494838 (1985-01-01), Wallquist et al.
Clinical Vision Sciences, vol. 3, No. 2, pp. 125-135, 1988, Teri B. Lawton, "Improved Word Recognition for Observers with Age-Related Maculopathies Using Compensation Filters".
Intelligent Robots and Computer Vision IX: Neural, Biological and 3-D Methods, vol. 1382, pp. 49-59, 1990, Eli Peli, "New Perspectives On Image Enhancement for the Visually Impaired".
1994 SID International Symposium Digest of Technical Papers, vol. 25, pp. 36-39, Jun. 14-16, 1994, E. Peli, et al., "Video Enhancement for the Visually Impaired".
Virtual Reality World, vol. 2, No. 3, pp. 63-65, May/Jun. 1994, Dr. Ronald Siwoff, "DEI: Digitally Enhanced Imager".
Nissan Technological Report, vol. 33, pp. 72-78, Jun. 1993, Masami Funakawa, "Simulating the Vision of Older Drivers".
Investigative Opthalmology & Visual Science, vol. 32, No. 8, pp. 2337-2350, Jul. 1991, R. Goldstein, et al., "Image Enhancement for the Visually Impaired".
Television, vol. 27, No. 4, pp. 235-242, 1973, H. Sakata, et al., "Frequency Response Correction of Television Signal by Using Spatial Frequency Technique".
Higuchi Kazunori
Nakano Tomoaki
Yamamoto Shin
Kabushiki Kaisha Toyota Chuo Kenkyusho
Lee Young
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