Improved lookup table to correct CRT adjacent pixel nonlinearity

Stanley A. Klein; Thom Carney; Q. James Hu

doi:10.1117/12.207536

20 April 1995 Improved lookup table to correct CRT adjacent pixel nonlinearity

Stanley A. Klein, Thom Carney, Q. James Hu

Proceedings Volume 2411, Human Vision, Visual Processing, and Digital Display VI; (1995) https://doi.org/10.1117/12.207536
Event: IS&T/SPIE's Symposium on Electronic Imaging: Science and Technology, 1995, San Jose, CA, United States

Abstract

Standard 1D gamma-correcting lookup tables do not compensate for adjacent pixel spatial nonlinearities along the direction of the display raster. These nonlinearities can alter the local mean luminance and contrast of the displayed image. Five steps are described for generating a 2D lookup table (LUT) that compensates for the nonlinearity. By adjusting the 2D LUT so it takes into account the inherent blur at light to dark transitions of the display system, the usable luminance range of the LUT can be extended while reducing the ringing artifact associated with luminance compensation. Use of the blur-compensated 2D LUT incurs no additional computational effort over an uncompensated 2D LUT. Matlab programs are included that can be used to generate a 2D LUT for a user's particular display system.

Citation Download Citation

Stanley A. Klein, Thom Carney, and Q. James Hu "Improved lookup table to correct CRT adjacent pixel nonlinearity", Proc. SPIE 2411, Human Vision, Visual Processing, and Digital Display VI, (20 April 1995); https://doi.org/10.1117/12.207536

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