Apparatus and method of processing shoot artifacts of image...

Details Apparatus and method of processing shoot artifacts of image... Apparatus and method of processing shoot artifacts of image...

2005-06-10

2008-09-02

Kassa, Yosef (Department: 2624)

Image analysis

Image enhancement or restoration

Artifact removal or suppression

C382S260000, C382S274000, C382S298000, C358S003260, C358S003270, C358S463000

Reexamination Certificate

active

07421146

ABSTRACT:
An apparatus and method of processing shoot artifacts of an image signal includes a maximum gradient value calculation part to set a window of a predetermined size based on a current pixel of an input image signal and to calculate a maximum gradient value based on values of pixels in the window, a limit value calculation part to calculate a limit value corresponding to the maximum gradient value, a dilation amount calculation part to calculate a dilation amount corresponding to the current pixel based on the calculated limit value and a pixel difference between the current pixel neighboring pixels of the current pixel, and a pixel value conversion part to add a current pixel value to a value obtained by multiplying the calculated dilation amount by a predetermined gain value.

REFERENCES:
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patent: 6782287 (2004-08-01), Grzeszczuk et al.
patent: 6847391 (2005-01-01), Kassatly
patent: 7049074 (2006-05-01), Schwartz
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patent: 2003-198878 (2003-07-01), None
patent: 2003-348380 (2003-12-01), None

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