Institutional Repository
Technical University of Crete
Technical University of Crete
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| URI | http://purl.tuc.gr/dl/dias/1884B08B-7E55-42A6-81FA-9CFFD034AFE8 | - |
| Identifier | https://doi.org/10.1109/10.581936 | - |
| Language | en | - |
| Title | An imaging colorimeter for noncontact tissue color mapping | en |
| Creator | Balas Costas | en |
| Creator | Μπαλας Κωστας | el |
| Publisher | Institute of Electrical and Electronics Engineers | en |
| Content Summary | There has been a considerable effort in several medical fields, for objective color analysis and characterization of biological tissues. Conventional colorimeters have proved inadequate for this purpose, since they do not provide spatial color information and because the measuring procedure randomly affects the color of the tissue. Here, an imaging colorimeter is presented, where the nonimaging optical photodetector of colorimeters is replaced with the charge-coupled device (CCD) sensor of a color video camera, enabling the independent capturing of the color information for any spatial point within its field-of-view. Combining imaging and colorimetry methods, the acquired image is calibrated and corrected, under several ambient light conditions, providing noncontact reproducible color measurements and mapping, free of the errors and the limitations present in conventional colorimeters. This system was used for monitoring of blood supply changes of psoriatic plaques, that have undergone Psoralens and ultraviolet A radiation (PUVA) therapy, where reproducible and reliable measurements were demonstrated. These features highlight the potential of the imaging colorimeters as clinical and research tools for the standardization of clinical diagnosis and for the objective evaluation of treatment effectiveness. | en |
| Type of Item | Peer-Reviewed Journal Publication | en |
| Type of Item | Δημοσίευση σε Περιοδικό με Κριτές | el |
| License | http://creativecommons.org/licenses/by/4.0/ | en |
| Date of Item | 2015-10-17 | - |
| Date of Publication | 1997 | - |
| Bibliographic Citation | C. Balas, "An imaging colorimeter for the non contact tissue color mapping", IEEE-Transactions on Biomedical Engineering, vol. 44, Iss. 6, pp. 468-474, Jun. 1997, DOI: 10.1109/10.581936 | en |
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