Improved quantitative evaluation of atopic dermatitis by camera calibration and rectification of a stereo image

Onseok Lee, Jaeseung Yu, Gunwoo Lee, Gyuman Park, Mingi Kim, Chil Hwan Oh

    Research output: Contribution to journalArticlepeer-review

    7 Citations (Scopus)

    Abstract

    Background/Purpose: The aim of this study was to establish a scientific assessment method to evaluate the severity of atopic dermatitis (AD) by calibrating part of a previously described stereo-image optical topometer (SOT).Methods: The old SOT was created using a non-convergence model. However, this study utilizes a convergence model. Camera calibration and rectification were performed using images obtained from stereo cameras. We attempted to verify the efficacy of AD treatment by objectively measuring the improvement in a group of subjects. Twenty AD patients with a variety of disease types were divided into a control group and a treatment group.Results: The scoring of the AD (SCORAD) index did not show any improvements in the treated patients. However, when comparing the advanced SOT and the old SOT, we observed a decreased variation for five parameters, indicating that the treated patients experienced improved outcomes compared with controls. Most notably, we found that the coefficient of variation of the advanced SOT was lower than that of the old SOT.Conclusion: We conclude that the advanced SOT may be useful for evaluating AD. The use of an advanced stereo image system may yield more reliable results than the old SOT system.

    Original languageEnglish
    Pages (from-to)11-19
    Number of pages9
    JournalSkin Research and Technology
    Volume17
    Issue number1
    DOIs
    Publication statusPublished - 2011 Feb 1

    Keywords

    • Atopic dermatitis
    • Camera calibration
    • Disparity
    • Rectification
    • Stereo image

    ASJC Scopus subject areas

    • Dermatology

    Fingerprint

    Dive into the research topics of 'Improved quantitative evaluation of atopic dermatitis by camera calibration and rectification of a stereo image'. Together they form a unique fingerprint.

    Cite this