Premium
25.2: Characterization of Physical Image Quality of 2‐ and 5‐Million‐Pixel Monochrome AMLCDs for Medical Imaging
Author(s) -
Blume Hartwig,
Steven Peter,
Ho Annie,
Roehrig Hans,
Fan Jiahua,
Amarpreet Chawla,
Gandhi Kunal
Publication year - 2003
Publication title -
sid symposium digest of technical papers
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.351
H-Index - 44
eISSN - 2168-0159
pISSN - 0097-966X
DOI - 10.1889/1.1832437
Subject(s) - luminance , monochrome , optics , pixel , liquid crystal display , optical transfer function , cathode ray tube , image quality , magnification , viewing angle , image resolution , noise (video) , spatial frequency , display device , dynamic range , computer vision , computer science , physics , image (mathematics) , operating system
The physical image quality of two new high‐performance monochrome active matrix liquid crystal displays (AMLCDs), a 2‐ and a 5‐million‐pixel display, is reviewed. The performance is illustrated by examples (because of space limitations) of on‐axis and off‐axis characteristic curves, luminance range and contrast, luminance uniformity across the display screen, temporal modulation transfer function (MTF), spatial MTF, spatial noise power spectra and spatial signal‐to‐noise ratios. The LCDs are equipped with an internal photosensor that maintains a desired maximum luminance and calibration to a given display function. The systems offer aperture and temporal modulation to place luminance levels with more than 12‐bit precision on a desired display function and achieve uniform contrast distribution over the luminance range for a narrow viewing angle perpendicular to the LCD face. The image quality of the LCDs is compared with that of high‐performance high‐resolution cathode‐ray‐tube (CRT) displays.