CONFERENCE PROCEEDINGS
Advanced Search
Home > Proceedings > Volume 12065 > Article
Paper
24 November 2021 Edge detection of reflectance transformation imaging for colorless traces
Yunchao Tang, Lihua Huang, Jie Dai, Huijie Huang
Author Affiliations +
Proceedings Volume 12065, AOPC 2021: Optical Sensing and Imaging Technology; 120652O (2021) https://doi.org/10.1117/12.2606693
Event: Applied Optics and Photonics China 2021, 2021, Beijing, China
Abstract
Reflectance Transformation Imaging (RTI) is a computational photography technology that can enhance the legibility and the fine details of the sample. Colorless trace is a special kind of trace with shallow depth and its grayscale is similar to the background. It is difficult to perceive details of these traces by traditional observation and detection methods. In this paper, we propose some improved detection methods which combine RTI with the Canny algorithm to get more details of colorless trace. The threshold is one of the key factors which affect the performance of the Canny algorithm so we put forward a threshold selection method based on the gradient histogram of the image. Three detection methods that combine RTI with the improved Canny algorithm are proposed in this paper. The experimental results show that these detection methods can extract weak and colorless traces effectively, and would have great potential application in criminal investigation.
© (2021) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Citation Download Citation
Yunchao Tang, Lihua Huang, Jie Dai, and Huijie Huang "Edge detection of reflectance transformation imaging for colorless traces", Proc. SPIE 12065, AOPC 2021: Optical Sensing and Imaging Technology, 120652O (24 November 2021); https://doi.org/10.1117/12.2606693
ACCESS THE FULL ARTICLE
ORGANIZATIONAL
Sign in with credentials provided by your organization.
INSTITUTIONAL
Select your institution to access the SPIE Digital Library.
SELECT YOUR INSTITUTION
PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.
PERSONAL SIGN IN
No SPIE Account? Create one
PURCHASE THIS CONTENT
SUBSCRIBE TO DIGITAL LIBRARY
50 downloads per 1-year subscription
Members: $195
Non-members: $335 ADD TO CART
25 downloads per 1 - year subscription
Members: $145
Non-members: $250 ADD TO CART
PURCHASE SINGLE ARTICLE
Includes PDF, HTML & Video, when available
Members: $17.00
Non-members: $21.00 ADD TO CART
PROCEEDINGS
 6 PAGES
DOWNLOAD PAPER SAVE TO MY LIBRARY
GET CITATION
Advertisement
Advertisement
RIGHTS & PERMISSIONS
Get copyright permission  Get copyright permission on Copyright Marketplace
KEYWORDS
Edge detection
Detection and tracking algorithms
Light sources and illumination
Reflectivity
Image enhancement
Cameras
Visualization
RELATED CONTENT
Subscribe to Digital Library
Receive Erratum Email Alert
Back to Top