Retina image

The Tlastic Retina Image Enhancement Using Polymer Grid Triode Arrays... 

Iris-recognition systems scan the surface of the iris to compare pattern [33]. Retina-recognition systems scan the surface of the retina and compare nerve patterns, blood vessels, and similar features. To the best of our knowledge, automated methods of iris and retina image reconstruction, or synthesis, have not been developed yet except for an approach based on generation of iris layer patterns [8]. 

M. Z. C. Azemin, D. K. Kumar, T. Y. Wong, J. J. Wang, R. Kawasaki, P. Mitchell, and S. P. Arjunan, "Fusion of multiscale wavelet-based fractal analysis on retina image for stroke prediction," in 2010 Annual International Conference of the IEEE Engineering in Medicine and Biology Society (EMBC), Buenos Aires, 2010, pp. 4308-4311. 

Threshold contrast is illustrated in Fig. 10-2. / is the intensity of light received by the eye from the object, and / + A/ represents the intensity coming from the surroundings. The threshold contrast can be as low as 0.018-0.03 and the object can still be perceptible. Other factors, such as the physical size of the visual image on the retina of the eye and the brain s response to the color of the object, influence the perception of contrast. 

Sharifzadeh M, Zhao DY, Bernstein PS, and Gellermann W (2008), Resonance Raman Imaging of macular pigment distributions in the human retina, J. Opt. Soc. Am. A 25 947-957. 

We experience heat, visible light, UV and radio waves by the way they interact with our thermometers, our eyes, skin and our radio sets respectively. This is a tremendously important concept. Photons of infrared light are experienced as heat. The photons that cause photochemical changes in the retina at the back of the eye are termed visible . These photochemical reactions in the eye generate electrical signals which the brain encodes to allow the reconstruction of the image in our mind this is why we see a scene only with visible light - indeed this is why we call it visible . 

Retina The ten-layered nervous tissue membrane of the eye. It is continuous with the optic nerve and receives images of external objects and transmits visual impulses to the brain. Its outer surface is in contact with the choroid and the inner surface with the vitreous body. The outer-most layer is pigmented, whereas the inner nine layers are transparent. [NiH]... 

D being were looking at a ball, the resultant image is produced by the excitation of a ball-shaped pattern of nerve endings in the spherical retina. Each point on the 3-D ball sends a light ray upsilon to a ballshaped region in the spherical retina (Fig. 3.4). 

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