Image processing system
First Claim
1. An image processing system comprising, in combinationa first and second source of video signals which represent one or more images,each of said sources producing a signal sequence which duplicates the format generated by a television camera so that appropriate vertical and horizontal sync pulses are included therein;
- means for subjecting the video signals from both sources to a preliminary wave shaping operation which involves unity gain, logarithmic amplification or differentiation so as to produce first and second modified video signals;
means for performing a preselected arithmetic operation with said first and second modified video signals which involves addition, subtraction, multiplication or division so as to produce processed video signals;
means for comparing the amplitude of said processed video signals to a plurality of successively higher threshold levels and for developing quantized signals which correspond to the number of threshold levels that are exceeded by said processed video signals;
means for combining selected ones of said quantized signals to form first, second and third encoded signals which designate those corresponding processed video signals that exceed predetermined combinations of said threshold levels;
a monitor adapted to provide a color television type display on its screen,said monitor being synchronized by the horizontal and vertical sync pulses from said sources and having three electron guns adapted to produce a like number of different colors on said screen; and
means for coupling said first, second and third encoded signals to different ones of said electron guns thereby to form on the screen of said monitor a color encoded image.
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Accused Products
Abstract
A portable, low-cost, bichannel image processing and enhancement system t can be programmed to accept two video sources, operate upon one or both simultaneously and deliver an enhanced result to a color monitor. The operations that can be performed on each source include, for example, unity gain, logarithmic amplification and differentiation, and both outputs thereafter can be subjected to such arithmetic operations as addition, subtraction and multiplication. The results are passed through an electronic user programmed window, color encoded by a quantizer and then displayed on a color monitor. The processor includes an area measurement circuit which quantitatively measures the percentage of the screen covered by any of the levels used in the quantizer, a luminance distribution analyzer which generates an histogram approximation to the distribution of grey levels in the image and a luminance cross-section analyzer which displays a graph of the image luminance along a vertical line.
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Citations
8 Claims
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1. An image processing system comprising, in combination
a first and second source of video signals which represent one or more images, each of said sources producing a signal sequence which duplicates the format generated by a television camera so that appropriate vertical and horizontal sync pulses are included therein; -
means for subjecting the video signals from both sources to a preliminary wave shaping operation which involves unity gain, logarithmic amplification or differentiation so as to produce first and second modified video signals; means for performing a preselected arithmetic operation with said first and second modified video signals which involves addition, subtraction, multiplication or division so as to produce processed video signals; means for comparing the amplitude of said processed video signals to a plurality of successively higher threshold levels and for developing quantized signals which correspond to the number of threshold levels that are exceeded by said processed video signals; means for combining selected ones of said quantized signals to form first, second and third encoded signals which designate those corresponding processed video signals that exceed predetermined combinations of said threshold levels; a monitor adapted to provide a color television type display on its screen, said monitor being synchronized by the horizontal and vertical sync pulses from said sources and having three electron guns adapted to produce a like number of different colors on said screen; and means for coupling said first, second and third encoded signals to different ones of said electron guns thereby to form on the screen of said monitor a color encoded image. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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Specification