In optical 3D shape measurement, stereo vision with structured light can measure 3D scan data with high accuracy and is used in many applications, but fine surface detail is difficult to obtain. On the other hand, photometric stereo can capture surface details but has disadvantages, in that its 3D data accuracy drops and it requires multiple light sources. When the two measurement methods are combined, more accurate 3D scan data and detailed surface features can be obtained at the same time. In this paper, we present a 3D optical measurement technique that uses re-projection of images to implement photometric stereo without an external light source. 3D scan data is enhanced by combining normal vector from this photometric stereo method, and the result is evaluated with the ground truth.
Bibliographical noteFunding Information:
Development for Low-Cost and Small LIDAR System Technology Based on 3D Laser scanning for 360 Real-time Monitoring), funded by the Ministry of Trade, Industry & Energy (MOTIE, Korea) and the Korea Evaluation Industrial Technology (KEIT, Korea). Institute of Industrial Technology (KEIT, Korea). Author Contributions: Keonhwa Jung and Taehwan Choi proposed the method of the research, designed the Author Contributions: Keonhwa Jung and Taehwan Choi proposed the method of the research, designed the perxopveidriemdetnhtes eaxnpde rwtisreotien 3thDe mmeaansuusrecrmipetn. t.SeAolkljauuntgh oKrsimap apnrodv Sedunthgbeifnin Iamlv peresrifoonrmofedth ethme aenxupsecrriimpte.nts. Minho Chang provided the expertise in 3D measurement. All authors approved the final version of the manuscript. Conflicts of Interest: The authors declare no conflict of interest. Conflicts of Interest: The authors declare no conflict of interest.
© 2017 by the authors.
- Active stereo vision
- Image re-projection
- Optical 3D measurement
- Photometric stereo
ASJC Scopus subject areas
- General Materials Science
- General Engineering
- Process Chemistry and Technology
- Computer Science Applications
- Fluid Flow and Transfer Processes