Grayscale resolution of LCD displays: 8 bits vs 11 bits

Hans Roehrig; Jiahua Fan; Elizabeth A. Krupinski; Kunal Gandhi

doi:10.1117/12.624925

Grayscale resolution of LCD displays: 8 bits vs 11 bits

Hans Roehrig, Jiahua Fan, Elizabeth A. Krupinski, Kunal Gandhi

Medical Imaging

Research output: Contribution to journal › Conference article › peer-review

Abstract

This paper presents a few results of an initial study to compare softcopy displays with 8 bits contrast resolution with those of 11 bits contrast resolution. Particular interest was paid to failure to detect subtle objects and appearance of artifacts like false contours as a result of improper quantization. Objects like squares, discs and Gaussian nodules were simulated at different amplitudes on uniform backgrounds. Another approach was to place simple objects like disks and Gaussian objects into a clinical image. The study concluded that indeed subtle objects can be missed and artifacts such as false contours can occur, dependent on signal amplitude and noise. A comprehensive observer study is under development to confirm and refine these results.

Original language	English (US)
Article number	59230M
Pages (from-to)	1-9
Number of pages	9
Journal	Proceedings of SPIE - The International Society for Optical Engineering
Volume	5923
DOIs	https://doi.org/10.1117/12.624925
State	Published - 2005
Event	Penetrating Radiation Systems and Applications VII - San Diego, CA, United States Duration: Aug 1 2005 → Aug 4 2005

Keywords

Digitization
Human perception
Quantization error

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Computer Science Applications
Applied Mathematics
Electrical and Electronic Engineering

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10.1117/12.624925

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title = "Grayscale resolution of LCD displays: 8 bits vs 11 bits",

abstract = "This paper presents a few results of an initial study to compare softcopy displays with 8 bits contrast resolution with those of 11 bits contrast resolution. Particular interest was paid to failure to detect subtle objects and appearance of artifacts like false contours as a result of improper quantization. Objects like squares, discs and Gaussian nodules were simulated at different amplitudes on uniform backgrounds. Another approach was to place simple objects like disks and Gaussian objects into a clinical image. The study concluded that indeed subtle objects can be missed and artifacts such as false contours can occur, dependent on signal amplitude and noise. A comprehensive observer study is under development to confirm and refine these results.",

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AU - Gandhi, Kunal

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Y1 - 2005

N2 - This paper presents a few results of an initial study to compare softcopy displays with 8 bits contrast resolution with those of 11 bits contrast resolution. Particular interest was paid to failure to detect subtle objects and appearance of artifacts like false contours as a result of improper quantization. Objects like squares, discs and Gaussian nodules were simulated at different amplitudes on uniform backgrounds. Another approach was to place simple objects like disks and Gaussian objects into a clinical image. The study concluded that indeed subtle objects can be missed and artifacts such as false contours can occur, dependent on signal amplitude and noise. A comprehensive observer study is under development to confirm and refine these results.

AB - This paper presents a few results of an initial study to compare softcopy displays with 8 bits contrast resolution with those of 11 bits contrast resolution. Particular interest was paid to failure to detect subtle objects and appearance of artifacts like false contours as a result of improper quantization. Objects like squares, discs and Gaussian nodules were simulated at different amplitudes on uniform backgrounds. Another approach was to place simple objects like disks and Gaussian objects into a clinical image. The study concluded that indeed subtle objects can be missed and artifacts such as false contours can occur, dependent on signal amplitude and noise. A comprehensive observer study is under development to confirm and refine these results.

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KW - Human perception

KW - Quantization error

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JF - Proceedings of SPIE - The International Society for Optical Engineering

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Grayscale resolution of LCD displays: 8 bits vs 11 bits

Abstract

Keywords

ASJC Scopus subject areas

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