منابع مشابه
Color-Vision and Color-Blindness
Special public attention was called to the subject in 1875 by an enquiry into the causes of a railway accident which had taken place in Sweden, from which it appears that colourblindness was the cause of the disaster. Our author having described colour-sensations, goes on to discuss the theories of colour-perception and colour-blindness, classifying the latter defect as total and partial. Total...
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In this chapter, we introduce the molecular structure of the genes encoding the human cone photopigments and their expression in photoreceptor cells. We also consider the consequences that alterations in those genes have on the spectral sensitivity of the photopigments, the cone photoreceptor mosaic, and the perceptual worlds of the color normal and color blind individuals who possess them. Thr...
متن کاملTraumatically acquired color vision defect.
A 24-year-old man acquired a color vision defect shortly after an accident in which he struck the back of his head. Results of the Farnsworth-Munsell 100-hue test showed that the patient had poor color discrimination in both eyes. His color matches on the Nagel anomaloscope suggested a red/green disturbance. Results from increment threshold testing demonstrated on absence of the blue mechanism....
متن کاملIllustrating Color Evolution and Color Blindness by the Decoding Model of Color Vision
A symmetrical model of color vision, the decoding model as a new version of zone model, was introduced. The model adopts new continuous-valued logic and works in a way very similar to the way a 3-8 decoder in a numerical circuit works. By the decoding model, Young and Helmholtz's tri-pigment theory and Hering's opponent theory are unified more naturally; opponent process, color evolution, and c...
متن کاملMachine Vision Algorithms on a Color Blindness Plate
This paper presents a new approach including passive and actrive processes to deal with the image segmentation and pattern recognition to a color blindness plate (CBP). The CBP is well-known satisfactory way of testing the degree of color blindness happened in the human visual system. The image of CBP is very complex. It includes not only the colors but also the disconnected size-varied dots. I...
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ژورنال
عنوان ژورنال: International Journal of Research -GRANTHAALAYAH
سال: 2014
ISSN: 2350-0530,2394-3629
DOI: 10.29121/granthaalayah.v2.i3se.2014.3619