Generating compound images having increased sharpness and reduced noise
First Claim
1. A method, comprising:
- determining a comparison image signal comprising pixels with values respectively indexing values of pixels of a first image signal in relation to values of spatially corresponding pixels of a second image signal;
filtering the comparison image signal with a spatial filter; and
generating a compound image signal comprising pixels with values composed of contributions from the pixel values of the first image signal and the pixel values of the second image signal, wherein the contributions are functions of respective values of spatially corresponding pixels in the filtered comparison image signal in relation to values of noise variation in the filtered comparison image signal;
wherein the determining, the filtering. and the generating are performed by computing hardware.
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Accused Products
Abstract
Systems and method of generating compound images having increased sharpness and reduced noise are described. In one aspect, a comparison image signal is determined. The comparison image signal includes pixels with values respectively indexing values of pixels of a first image signal in relation to values of spatially corresponding pixels of a second image signal. The comparison image signal is filtered with a spatial filter. A compound image signal is generated. The compound image signal has pixels with values composed of contributions from the pixel values of the first image signal and the pixel values of the second image signal. The contributions are functions of respective values of spatially corresponding pixels in the filtered comparison image signal in relation to values of noise variation in the filtered comparison image signal.
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Citations
20 Claims
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1. A method, comprising:
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determining a comparison image signal comprising pixels with values respectively indexing values of pixels of a first image signal in relation to values of spatially corresponding pixels of a second image signal; filtering the comparison image signal with a spatial filter; and generating a compound image signal comprising pixels with values composed of contributions from the pixel values of the first image signal and the pixel values of the second image signal, wherein the contributions are functions of respective values of spatially corresponding pixels in the filtered comparison image signal in relation to values of noise variation in the filtered comparison image signal; wherein the determining, the filtering. and the generating are performed by computing hardware. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A system, comprising:
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a memory storing processor-readable instructions; a processor coupled to the memory, operable to execute the instructions, and based at least in part on the execution of the instructions operable to perform operations comprising determining a comparison image signal comprising pixels with values respectively indexing values of pixels of a first image signal in relation to values of spatially corresponding pixels of a second image signal; filtering the comparison image signal with a spatial filter; and generating a compound image signal comprising pixels with values composed of contributions from the pixel values of the first image signal and the pixel values of the second image signal, wherein the contributions are functions of respective values of spatially corresponding pixels in the filtered comparison image signal in relation to values of noise variation in the filtered comparison image signal. - View Dependent Claims (14, 15, 16, 17, 18, 19)
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20. A non-transitory machine readable medium storing machine-readable instructions causing a machine to perform operations comprising:
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determining a comparison image signal comprising pixels with values respectively indexing values of pixels of a first image signal in relation to values of spatially corresponding pixels of a second image signal; filtering the comparison image signal with a spatial filter; and generating a compound image signal comprising pixels with values composed of contributions from the pixel values of the first image signal and the pixel values of the second image signal, wherein the contributions are functions of respective values of spatially corresponding pixels in the filtered comparison image signal in relation to values of noise variation in the filtered comparison image signal.
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Specification