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Related Experiment Videos

The adjacent pixel nonlinearity: problems and solutions

S A Klein1, Q J Hu, T Carney

  • 1School of Optometry, University of California-Berkeley 94720-2020, USA. klein@adage.berkeley.edu

Vision Research
|October 1, 1996
PubMed
Summary
This summary is machine-generated.

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Adjacent pixel nonlinearity affects display luminance. A new compensation method using a double-entry look-up table effectively corrects this, improving image sharpness and accuracy on CRT displays.

Area of Science:

  • Visual perception
  • Display technology
  • Image processing

Background:

  • Adjacent pixel nonlinearity describes how a pixel's luminance depends on preceding pixels.
  • This phenomenon impacts image fidelity in display systems.

Purpose of the Study:

  • To measure and model adjacent pixel nonlinearity in CRT displays.
  • To develop and evaluate a compensation method for this nonlinearity.

Main Methods:

  • Measurements of average luminances for various test patterns with luminance jumps on two CRT displays.
  • Fitting the data using a two-stage model proposed by Mulligan and Stone (1989).

Main Results:

  • The Mulligan and Stone model accurately predicted the measured data.

Related Experiment Videos

  • A double-entry look-up table was developed for nonlinearity compensation.
  • The compensation method proved effective even with multiple preceding pixel dependencies.

    • Conclusions:

    • The developed compensation method significantly improves image quality, resulting in sharper and more accurate images, especially at small pixel sizes.
    • The study validates a practical approach to mitigate adjacent pixel nonlinearity in display systems.