Image processing method for removing noise from an image

Details Image processing method for removing noise from an image Image processing method for removing noise from an image

2006-03-31

2011-11-15

Repko, Jason M (Department: 2624)

Image analysis

Image enhancement or restoration

Image filter

C382S260000, C382S261000, C382S262000, C382S264000, C382S275000

Reexamination Certificate

active

08059910

ABSTRACT:
An image processing method for removing noise contained in an image includes: inputting an original image constituted with a plurality of pixels; generating a plurality of band-limited images, resolution levels of which are lowered in sequence, by executing a specific type of band pass filter processing on the original image; extracting a high-frequency component from each of the band-limited images by executing high-pass filter processing on the band-limited images; extracting a noise component contained in each of the band-limited images by separating the noise component through nonlinear conversion processing executed on the extracted high-frequency component; and removing the noise in the original image based upon the extracted noise component in each band-limited image.

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