Robust skin microrelief depth estimation using a mobile stereo system
- Authors
- Moon, Cho-, I; Lee, Onseok; Choi, Min-Hyung
- Issue Date
- Nov-2022
- Publisher
- Blackwell Publishing Inc.
- Keywords
- mobile stereo system; optimization; skin three-dimensional analysis; stereo matching
- Citation
- Skin Research and Technology, v.28, no.6, pp 815 - 826
- Pages
- 12
- Journal Title
- Skin Research and Technology
- Volume
- 28
- Number
- 6
- Start Page
- 815
- End Page
- 826
- URI
- https://scholarworks.bwise.kr/sch/handle/2021.sw.sch/21763
- DOI
- 10.1111/srt.13204
- ISSN
- 0909-752X
1600-0846
- Abstract
- Background The skin surface becomes wrinkled and rough due to various internal and external factors. A three-dimensional (3D) analysis of the skin is required to improve skin conditions. Stereophotogrammetry, a noninvasive 3D analysis method, is easy to install and use, but most stereo systems have a fixed baseline and scale. Previous stereo systems are not suitable for observing micro-range skin features. Therefore, we suggest the optimal conditions and methods for the 3D analysis of skin microrelief using a multi-conditioned stereo system. Methods We constructed a nonconvergence model using a mobile device and acquired stereo images under multiscale and multi-baseline conditions. We extracted 3D information of the skin through our process: preprocessing, skin feature extraction, feature matching, and actual depth mapping. We improved the accuracy of the 3D analysis of the skin by using disparity values instead of disparity maps. We compared and analyzed the performances of six local feature detector and descriptor algorithms. In addition, we suggested depth-mapping formulas to estimate the actual depth of the skin microrelief. Results We confirmed that stereo images with a working distance of 70-75 mm and a baseline of 4-8 mm are effective for the 3D analysis of skin microrelief. In addition, accelerated KAZE exhibited the best performance for features extraction and stereo matching. Finally, the extracted 3D information was converted to the actual depth, and the performance of the 3D analysis was verified. Conclusion The proposed system and method that provide texture information are effective for 3D skin disease analysis and evaluation.
- Files in This Item
- There are no files associated with this item.
- Appears in
Collections - College of Medical Sciences > Department of Medical IT Engineering > 1. Journal Articles
Items in ScholarWorks are protected by copyright, with all rights reserved, unless otherwise indicated.