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13 March 2008 Improved display calibration algorithm for wide viewing angle DICOM GSDF compliance
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Abstract
LCDs suffer from viewing angle dependency, meaning that characteristics of LCDs change with viewing angle. DICOM GSDF calibration and corresponding quality checks typically take place for on-axis viewing. However, users will use the display for a broad range of viewing angles. Several studies have shown that when calibration is done for on-axis viewing then the display is not accurately complying with the DICOM GSDF standard when viewing off-axis. This paper presents a novel solution: we adapt the DICOM GSDF calibration algorithm to have inherent robustness against change of viewing angle. A validation has been done by means of a 5 Mega Pixel medical display. Results show that it is possible to double the range of viewing angles (18° instead of 9°) for which the display is within the 10% tolerance as defined in the DICOM GSDF standard. This result is very useful because users typically will use their displays also for off-axis viewing angles.
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T. Kimpe and C. Marchessoux "Improved display calibration algorithm for wide viewing angle DICOM GSDF compliance", Proc. SPIE 6919, Medical Imaging 2008: PACS and Imaging Informatics, 69190P (13 March 2008); https://doi.org/10.1117/12.768676
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