Improved measurement of dynamic modulation transfer functions on display using pursuit camera method based on wavelet-denoising method

A new method was developed for studying dynamic modulation transfer functions (DMTFs) of liquid crystal display (LCD) based on the slanted edge method, improved wavelet-denoise (IWD) method, and Fourier transformation. Measurements were made for capturing the images of moving step-edge patterns on t...

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Published in:Optical review (Tokyo, Japan) Japan), 2011-01, Vol.18 (1), p.153-156
Main Authors: Hsu, Shau-Wei, Chang, Chia-Ying, Chung, Zong-Ying, Wu, Kuei-Neng
Format: Article
Language:English
Subjects:
Atomic
Lasers
Microwaves
Molecular
Optical and Plasma Physics
Optical Devices
Optics
Photonics
Physics
Physics and Astronomy
Quantum Optics
Regular Papers
RF and Optical Engineering
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description A new method was developed for studying dynamic modulation transfer functions (DMTFs) of liquid crystal display (LCD) based on the slanted edge method, improved wavelet-denoise (IWD) method, and Fourier transformation. Measurements were made for capturing the images of moving step-edge patterns on the display by a slightly tilted pursuit camera. The scanning-rate and contrast-dependent DMTFs of a LCD were demonstrated, and the corresponding parameters such as blurred edge width (BEW), spatial sharpness, and motion picture response time (MPRT) were calculated from the DMTF curves. A simple linear relationship between these parameters was found. The properties of a cathode ray tube (CRT) display were also measured for comparison with those of the LCD.
doi_str_mv 10.1007/s10043-011-0014-2
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subjects Atomic
Lasers
Microwaves
Molecular
Optical and Plasma Physics
Optical Devices
Optics
Photonics
Physics
Physics and Astronomy
Quantum Optics
Regular Papers
RF and Optical Engineering
title Improved measurement of dynamic modulation transfer functions on display using pursuit camera method based on wavelet-denoising method
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