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Appl. Sci. 2017, 7(10), 1058; https://doi.org/10.3390/app7101058

A Photometric Stereo Using Re-Projected Images for Active Stereo Vision System

Department of Mechanical Engineering, Korea University, Seoul 02841, Korea
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Received: 7 September 2017 / Accepted: 11 October 2017 / Published: 13 October 2017
(This article belongs to the Section Computer Science and Electrical Engineering)
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Abstract

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. View Full-Text
Keywords: optical 3D measurement; active stereo vision; photometric stereo; image re-projection optical 3D measurement; active stereo vision; photometric stereo; image re-projection
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Jung, K.; Kim, S.; Im, S.; Choi, T.; Chang, M. A Photometric Stereo Using Re-Projected Images for Active Stereo Vision System. Appl. Sci. 2017, 7, 1058.

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