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Light and Optical Imaging Systems
Perception of Images
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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 frame 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 motion rendition nonlinear object optical systems output photon picture plate possible printing probability distribution 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