Image artifact removal technique for LCP

Details Image artifact removal technique for LCP Image artifact removal technique for LCP

2005-04-12

2005-04-12

Bali, Vikkram (Department: 2623)

Image analysis

Image enhancement or restoration

Artifact removal or suppression

C382S261000, C382S264000, C358S003260

Reexamination Certificate

active

06879733

ABSTRACT:
A technique is provided that identifies screen and non-screen regions of a projected or displayed image to smooth and selectively remove moiré from the screen regions while maintaining sharpness in the non-screen regions. Each pixel in the image is classified as a screen or non-screen pixel and then pixels in a predetermined surrounding area of each pixel are examined to check the classification of that pixel. A low pass filter is applied to pixels in the image, such that, when the low pass filter is applied, a center of the low pass filter is selectively shifted relative to a current pixel based on the examination.

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