METHOD FOR ELIMINATING IMAGE ARTIFACT OF LIQUID CRYSTAL PROJECTOR

摘要

PURPOSE: A method for eliminating image artifacts of a liquid crystal projector is provided to smoothen the screen area and remove moire from the screen area selectively by maintaining definition with identifying screen or non-screen regions. CONSTITUTION: A method for eliminating image artifacts of a liquid crystal projector identifies screen and non-screen regions of a projected or displayed image to smooth and selectively remove moire from the screen regions while maintaining definition 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 the pixel. A low pass filter(43) is applied to pixels in the image. 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.