Method of repairing scratches in digital images

Details Method of repairing scratches in digital images Method of repairing scratches in digital images

2003-09-11

2008-01-29

Kassa, Yosef (Department: 2624)

Image analysis

Image enhancement or restoration

Artifact removal or suppression

C382S260000, C382S274000, C382S282000, C358S003260, C358S003270, C358S463000, C345S612000, C345S618000

Reexamination Certificate

active

07324704

ABSTRACT:
A method of repairing scratches in a digital image includes counting the number of abnormal pixels among neighboring pixels of a selected pixel. The selected pixels that are surrounded by abnormal pixels in a number greater than a predetermined value are designed as particular pixels. An area surrounding each particular pixel is divided into a plurality of blocks. Furthermore, brightness difference between two of the blocks are calculated. Scratch pixels are found from the particular pixels based on brightness difference between blocks. Then, an area surrounded by scratch pixels are subdivided and filled up. Thereby, the scratch pixels can be precisely found and repaired without the need of hardware.

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