Pro-Lite Technology has released the Truemura software module for users of its Prometric CCD imaging photometers from Radiant Imaging.
Truemura enhances the Prometric 9.1 software to enable the identification and classification of flat panel display mura, which are correlated with human perception in terms of Just Noticeable Differences (JND).
The Truemura Analysis Module for Prometric 9.1 provides automated defect detection analysis for flat panel display (FPD) systems, which is precisely correlated to human judgment of brightness, colour and blemishes.
This module is available for use with Radiant Imaging's Prometric 9.1 control and analysis software.
When used in conjunction with a Prometric CCD imaging photometer or colorimeter, the Truemura module provides a complete characterisation and testing system for FPDs, especially liquid crystal display (LCD) panels and displays, in R and D and production.
Computer-aided detection of display defects or blemishes, referred to as mura, has traditionally been difficult because the human recognition of uniformity variations and other defects is dependent upon many factors, including brightness, colour and spatial relationships.
Most available techniques for display defect analysis are based upon simple thresholding techniques.
While useful in identifying gross defects, simple threshold analysis cannot accurately discriminate JND.
Truemura is based upon a model of human perception that allows a grading of LCD mura to match human observers, ignoring mura that cannot be seen by humans and ranking different mura which are distinguished by humans into categories matching those assigned by human observers.
Radiant Imaging's Truemura Analysis Module is a commercial system providing advanced image analysis algorithms for computing JND.
This augments the defect analysis functions already available in Prometric 9.1.
The JND detection algorithm incorporated in Truemura is based upon a patent-pending Standard Spatial Observer technology licensed by Radiant Imaging from NASA.
