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Issues in Digital Image Acquisition. devices. scanner video digitizer digital camera digital video. sensor organization. line scan sensors area sensors. Digital Image Acquisition. X. origin. Y. Digital Image Representation. f(x,y). Monochrome image -
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devices scannervideo digitizerdigital cameradigital video sensor organization line scan sensorsarea sensors Digital Image Acquisition
X origin Y Digital Image Representation f(x,y) Monochrome image - a two-dimensional light intensity function f(x,y)
Spatial Resolution • Brightness Quantization
128x128 64x64 Spatial Resolution 256x256
128x128 64x64 32x32 16x16 Spatial Resolution 256x256
G=64 G=16 G=8 G=4 G=2 Brightness Quantization G=256
Digital Representations Binary image 1 bit/pixel
Digital Representations Greyscale 8 bits/pixel
Digital Representations True color 24 bits/pixel
Digital Representations Red channel 8 bits/pixel Green channel 8 bits/pixel Blue channel 8 bits/pixel True color - 24 bits/pixel
Digital Representations Pseudocolor 8 bits/pixel + look-up table (LUT)