Comprehensive Display Test Suite
The TrueMURA Software license provides several mura tests in addition to what is offered in standard TrueTest Software. TrueMURA allows users to define a complete set of measurement parameters and set pass/fail criteria for different types, locations, and severities of mura in an image. The software license includes specific tests for identification and measurement of mura types including:
- Black Mura
- Blob Analysis
- Butterfly Mura
- Corner Light
- Diagonal Line Mura
- Edge Mura
- LED Mura
- Line Mura
- Spot Mura
Available in standard TrueTest™ Software:
- Color Edge Mura
- Color Mura
- Diagonal Pattern Mura
- Polarizer Deformation
- Spot Pattern Mura
Captured image of display with mura (top), shown with TrueMURA analysis applied (Black Mura analysis example) (bottom).
Part of the TrueTest platform, any tests from the TrueMURA test library can be added to a sequence (which are stored, so multiple sequences can be created and recalled as needed), and test parameters and pass/fail settings can be input for each test. The entire sequence can be run end-to-end automatically. Individual test results are displayed and can be recorded in a report.
Just Noticeable Differences
Radiant’s TrueMURA Software is the first commercial system to provide advanced image analysis algorithms for computing JND (“Just Noticeable Differences”) in displays. These tests augment the defect analysis functions already available in Radiant’s TrueTest Automated Visual Inspection Software, including a complete test suite to evaluate luminance, chromaticity, and common display defects (non-uniformity, dead pixels, lines, and more). The JND detection algorithm incorporated in TrueMURA is based on U. S. patent 7,783,130, “Spatial Standard Observer” (SSO) technology, licensed by Radiant Vision Systems from the National Aeronautics and Space Administration (NASA).
JND analysis image (left) and outputs (right). TrueMURA analysis provides output of maximum, total, and single JND values.
Complete Measurement Solution
TrueMURA can be used with any ProMetric Imaging Colorimeter or Photometer, providing multiple options to achieve the field of view, pixel resolution, dynamic range, and cost requirements for your application.
Supported by Radiant's global support staff and distributor network, TrueMURA is field-proven and has been used to test displays in the latest high-value devices worldwide.
TrueMURA License Key Features and Highlights:
- Applies photometric and colorimetric measurement to values captured by imaging systems that simulate human visual perception of light and color
- Includes tests to detect over 15 types of display mura and pass/fail on visual appearance
- Single display test platform from R&D to production reduces cost and variability in display image quality assessment
- Objective, numerical evaluation of display mura using algorithms for computing JND (“Just Noticeable Differences”) based on U.S. Patent 7,783,130 licensed by Radiant from NASA
- Data analysis functions including bitmaps, isoplots, and cross-sections