Characterization of crosstalk in high-resolution active matrix liquid crystal displays for medical imaging

Aldo Badano; Jerzy Kanicki

doi:10.1117/12.424878

30 April 2001 Characterization of crosstalk in high-resolution active matrix liquid crystal displays for medical imaging

Aldo Badano, Jerzy Kanicki

Author Affiliations +

Proceedings Volume 4295, Flat Panel Display Technology and Display Metrology II; (2001) https://doi.org/10.1117/12.424878
Event: Photonics West 2001 - Electronic Imaging, 2001, San Jose, CA, United States

Abstract

In active-matrix liquid crystal displays with large pixel array and large number of graylevels, the luminance of a pixel depends on the luminance of the rest of the image. This artifact known as crosstalk is caused by parasitic phenomena in the active-matrix array. When interpreting high information content medical images with subtle features and structured background, crosstalk can affect image fidelity and diagnostic performance. Conventional methods rely on the measurement of the luminance change of small square targets located across the screen when changing the background intensity. We present a method that describes both the magnitude and the spatial extent of the crosstalk artifact. The method is based on the formulation of a response function that corresponds to the differential contribution of a vertical or horizontal line to the luminance of a small centered target. The response function is defined for a given screen position, along the horizontal or vertical display axis. Our measurements show that subtle differences between vertical and horizontal crosstalk can be detected with the proposed method, and that mots of the influence is confined to a 40-pixel region about the target. The results obtained with the proposed characterization method allow for the modeling of crosstalk effects to determine its impact on a variety of visual tasks.

Citation Download Citation

Aldo Badano and Jerzy Kanicki "Characterization of crosstalk in high-resolution active matrix liquid crystal displays for medical imaging", Proc. SPIE 4295, Flat Panel Display Technology and Display Metrology II, (30 April 2001); https://doi.org/10.1117/12.424878

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available