Active thermal marker using thermal images of heated areas with visible semiconductor laser

Tomohiko Hayakawa; Yuka Hiruma; Yushan Ke; Masatoshi Ishikawa

doi:10.1117/12.3023230

15 February 2024 Active thermal marker using thermal images of heated areas with visible semiconductor laser

Tomohiko Hayakawa, Yuka Hiruma, Yushan Ke, Masatoshi Ishikawa

Proceedings Volume 13069, International Conference on Optical and Photonic Engineering (icOPEN 2023); 130690B (2024) https://doi.org/10.1117/12.3023230
Event: International Conference on Optical and Photonic Engineering (icOPEN 2023), 2023, Singapore, Singapore

Abstract

In situations where the object being captured or the camera itself is in motion, object tracking using conventional attached markers or detailed textures is useful to keep capture the object with high accuracy; however, tracking accuracy has been degraded in situations where texture features are scarce or where it is difficult to attach markers. Therefore, in this study, the temperature rise corresponding to the laser irradiation time to the object is detected by a thermal camera, and the points where the temperature reaches or exceeds a threshold value after the laser irradiation ends are used as markers. After the temperature drops, laser irradiation is performed again to repeatedly generate markers. Furthermore, by controlling the irradiation point with a 2-axis galvanometer mirror, a marker that can code arbitrary shapes and information can be generated on a 2-dimensional plane. In our experiments, we irradiated a red semiconductor laser onto black paper, and found that an irradiation time of 10 ms was the most efficient in terms of heat dissipation time, enabling the simultaneous generation of up to 33 markers. As a result, it was found that it is possible to draw distinguishable characters and graphics such as lines and circles by continuous drawing. Future plans include application to non-paper based on additional physical property investigations and actual tracking applications.

(2024) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

Tomohiko Hayakawa, Yuka Hiruma, Yushan Ke, and Masatoshi Ishikawa "Active thermal marker using thermal images of heated areas with visible semiconductor laser", Proc. SPIE 13069, International Conference on Optical and Photonic Engineering (icOPEN 2023), 130690B (15 February 2024); https://doi.org/10.1117/12.3023230

ACCESS THE FULL ARTICLE

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

RIGHTS & PERMISSIONS

Get copyright permission Get copyright permission on Copyright Marketplace

KEYWORDS

Laser irradiation

Laser marking

Thermography

Thermal imaging cameras

Motion detection

Semiconductor lasers

Galvanometers

Show All Keywords

Keywords/Phrases

Search In:

Publication Years