Television – Monitoring – testing – or measuring – Testing of image reproducer
Patent
1994-06-13
1996-04-23
Chin, Tommy P.
Television
Monitoring, testing, or measuring
Testing of image reproducer
H04N 1704
Patent
active
055108334
ABSTRACT:
A system for transforming coordinate systems in an automated video monitor alignment system includes a camera and computer to capture an image of the display bezel surrounding the cathode ray tube and of the image displayed on the CRT. Three dimensional models of the CRT tube and display bezel are used to compute and compensate for camera perspective. Camera pixel data can then be transformed to `flat plane` coordinates. When the relative orientation of the camera and CRT are corrected for, the effects of parallax can be eliminated, allowing more accurate inspection, measurement, and lower cost fixturing on the production line. Thus, an accurate coordinate transformation from a camera-referenced coordinate system to a monitor-referenced coordinate system is made.
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Kern Gregory A.
Webb James R.
Chin Tommy P.
Display Laboratories Inc.
Kubida William J.
Le Vu
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