Calibrating a COTS Monitor to DICOM Standard

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Date
2009
Journal Title
Journal ISSN
Volume Title
Publisher
The Eurographics Association
Abstract
Abstract We present a method for calibrating a commodity, off-the-shelf (COTS) monitor (costing in the region of £200) to produce a greyscale image approximately calibrated to the DICOM standard, rather than require a 10-bit radiology monitor (costing in the region of £10,000). We use the concept of PseudoGrey to extend the available shades of grey from 256 to 5,800, which is in excess of a 12-bit greyscale. The chromaticity of the resulting greyscale is analysed to verify that the colour introduced does not unduly detract from a pure greyscale image. The behaviour of low intensity levels in the COTS monitor is also analysed, showing that a naive approach to estimating luminance from individual passes through the red, green and blue components is insufficient to produce an accurate intensity range. The results show that we can achieve a basic DICOM calibration (with FIT and LUM tests), but we have yet to test for further variability (such as off-axis deterioration in brightness or inconsistent luminance across a display). As well as displaying medical images, this approach may be of use in other areas requiring a high dynamic range, such as thermal imagery or images taken through multiple alternative exposures.
Description

        
@inproceedings{
:10.2312/LocalChapterEvents/TPCG/TPCG09/199-206
, booktitle = {
Theory and Practice of Computer Graphics
}, editor = {
Wen Tang and John Collomosse
}, title = {{
Calibrating a COTS Monitor to DICOM Standard
}}, author = {
Grimstead, Ian J.
and
Avis, Nick J.
}, year = {
2009
}, publisher = {
The Eurographics Association
}, ISBN = {
978-3-905673-71-5
}, DOI = {
/10.2312/LocalChapterEvents/TPCG/TPCG09/199-206
} }
Citation