By processing pixel data, a low-cost halftone method is used to improve viewing-angle characteristics of TN-mode TFTLCDs. The algorithm reduces the occurance of pixels in natural images with mid-tone graylevels, while preserving the local luminance. The improvement in viewing-angle occurs with some loss of image quality due to the halftone pattern. As the pixel density is increased, the halftone pattern becomes less
noticeable.
By: Steven L. Wright, Paul F. Greier
Published in: RC22283 (Revised) in 2001
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