Triggered image capture for high-speed display characterization

John W. Roberts; Tracy Comstock; Xiao Tang

doi:10.1117/12.463786

26 April 2002 Triggered image capture for high-speed display characterization

John W. Roberts, Tracy Comstock, Xiao Tang

Proceedings Volume 4657, Projection Displays VIII; (2002) https://doi.org/10.1117/12.463786
Event: Electronic Imaging, 2002, San Jose, California, United States

Abstract

Precision display measurements often involve the integration of light measurements over many frames. Newer display technologies with high speed light modulators such as micromirrors are able to make sophisticated use of temporal modulation. This may result in measurement errors, and in situations where temporal modulation produces visible artifacts that affect display usability, but that conventional metrology techniques do not detect. There is a need for further development of new metrology techniques that collect information on the temporal behavior of high speed displays. The emergence of multiple technologies from multiple display manufacturers has created a need for generic, non-brand-specific or technology-independent tools. We are working on such a technique, using the triggered capture of display images with a sub-microsecond imager, with test images and image sequences designed to evoke particular display responses, triggers that can involve keying on features designed into the test images, and subsequent processing of captured images to reconstruct the behavior of the display. In principle, such measures can be calibrated with conventional full-screen measurements so that a determination of pixel sequences can lead to an accurate determination of the effective grayscale and luminance of each pixel. Complications include the finite time required for pixel switching (so that pixel duty cycles can not be computed in unit blocks of time), and the risk that the observation method used will introduce a bias in the temporal observations.

Citation Download Citation

John W. Roberts, Tracy Comstock, and Xiao Tang "Triggered image capture for high-speed display characterization", Proc. SPIE 4657, Projection Displays VIII, (26 April 2002); https://doi.org/10.1117/12.463786

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