Analysis of Picture Quality for Flat Panel Display based on Temporal-spatial Picture Model

Autor:	Naoki Shiramatsu, Zen-ichirou Hara
Rok vydání:	2001
Předmět:	Brightness Pixel Computer science business.industry Image quality Flicker Dot pitch Flat panel display Computer Science Applications law.invention NTSC law Professional video camera Media Technology Computer vision Artificial intelligence Electrical and Electronic Engineering business
Zdroj:	The Journal of the Institute of Image Information and Television Engineers. 55:422-430
ISSN:	1881-6908 1342-6907
DOI:	10.3169/itej.55.422
Popis:	We introduce a temporal-spatial picture model, analyze the spectra of pictures in flat displays, and discuss the effects of spatial or temporal specifications of pictures on picture quality. We found that reducing the inter-pixel gap every two pixels to increase brightness or resolution results in uneven pixel pitch. An appropriate rate of unevenness produces higher brightness or resolution and improves overall picture quality. We also found that the use of a field dispersed PWM, which disperses the driving pulse to increase the apparent field frequency, repress the flicker that often occurs with high brightness or large size displays. Moreover, we found that using a TV camera to shoot pictures for the display of a field dispersed PWM results in good picture quality and enables image signals of different field frequencies (such as NTSC or PAL) to be displayed normally. These findings are important steps toward the goal of achieving high-quality tiled displays.
Databáze:	OpenAIRE
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