Image pickup system, noise reduction processing device and image pick-up processing program
AssigneeOlympus Corporation
InventorTakao Tsuruoka
Life of this patent
Estimating the term…
Abstract
The image pickup system for performing noise reduction processing on signals from an image pickup element comprises a first noise estimating unit for estimating a first amount of noise on the basis of a target pixel in the signals for which noise reduction processing is performed, an extraction unit for extracting similar pixels that resemble the target pixel from the neighborhood of the target pixel on the basis of the target pixel and the first amount of noise, a second noise estimating unit for estimating a second amount of noise from the target pixel and the similar pixels, and a noise reduction unit for reducing the noise of the target pixel on the basis of the second amount of noise.
Claims49
An image pickup system for performing noise reduction processing on signals from an image pickup element, comprising:
- first noise estimating means for estimating a first amount of noise on the basis of a target pixel in the signals for which noise reduction processing is performed;
- extraction means for extracting similar pixels that resemble the target pixel from the neighborhood of the target pixel on the basis of the target pixel and the first amount of noise;
- second noise estimating means for estimating a second amount of noise from the target pixel and the similar pixels;
- and
- noise reduction means for reducing the noise of the target pixel on the basis of the second amount of noise.
A noise reduction processing device for performing noise reduction processing on input image signals, comprising:
- first noise estimating means for estimating a first amount of noise on the basis of target pixel in the images signals for which noise reduction processing is performed;
- extraction means for extracting similar pixels that resemble the target pixel from the neighborhood of the target pixel on the basis of the target pixel and the first amount of noise;
- second noise estimating means for estimating a second amount of noise from the target pixel and the similar pixels;
- and
- noise reduction means for reducing the noise of the target pixel on the basis of the second amount of noise.
An image pickup processing program which causes a computer to execute:
- first noise estimation processing for estimating a first amount of noise for signals from an image pickup element on the basis of target pixel in the signals for which noise reduction processing is performed;
- extraction processing for extracting similar pixels that resemble the target pixel from the neighborhood of the target pixel on the basis of the target pixel and the first amount of noise;
- second noise estimation processing for estimating a second amount of noise from the target pixel and the similar pixels;
- and
- noise reduction processing for reducing the noise of the target pixel on the basis of the second amount of noise.
Dependencies are inferred from the claim text.