Fundamentals of Electronic Imaging Systems: Some Aspects of Image Processing |
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Page 66
... range of normal light levels . This phenomenon is deceptive , however , since in order to achieve the enormous dynamic range implied by Fig . 3.4 , the experiment must be carried out slowly enough for the eye to become adapted , i.e. ...
... range of normal light levels . This phenomenon is deceptive , however , since in order to achieve the enormous dynamic range implied by Fig . 3.4 , the experiment must be carried out slowly enough for the eye to become adapted , i.e. ...
Page 68
... dynamic range is barely two log units and because the adaptation level is not much below the highlight luminance . Transparencies projected by good equipment in a dark room or theater are much better because the physical dynamic range ...
... dynamic range is barely two log units and because the adaptation level is not much below the highlight luminance . Transparencies projected by good equipment in a dark room or theater are much better because the physical dynamic range ...
Page 70
... dynamic range , at least on the dark side , much more like those of Fig . 3.8 than that of Fig . 3.4 , lending strength to the view that the actual dynamic range on the low side is rather small . None of the curves flatten out and rise ...
... dynamic range , at least on the dark side , much more like those of Fig . 3.8 than that of Fig . 3.4 , lending strength to the view that the actual dynamic range on the low side is rather small . None of the curves flatten out and rise ...
Contents
Introduction | 1 |
Light and Optical Imaging Systems | 20 |
Perception of Images | 60 |
Copyright | |
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Common terms and phrases
achieved aliasing amplitude analog aperture average bandwidth baseband bits per sample bits/pel bits/sample block camera tube channel channel capacity coding systems color companding contours contrast curve display DPCM dynamic range edge points effect efficiency electronic entropy entropy coding equal error example exposure flicker flux Fourier frequency response function Gaussian graphics halftone harmonics illumination image processing impulse response input intersymbol interference lens letterpress light linear log2 low-pass filter lumen luminance methods modulation moiré patterns motion rendition nonlinear object optical system output Paper Density photons picture plate possible printing produce pseudorandom noise pulse quantization noise random repeating area reproduction resolution result sampled signal sampling density scanners scanning screen signal sensitivity sharpening sharpness shot noise shown in Fig spatial frequency spectral spectrum statistical steradian surface techniques temporal tone scale transform transmission transmitted two-dimensional vertical video signal visual wavelength