Design of coded structured light based on square-shaped primitives

Chi-Chung Lau; Ching-Cherng Sun; Tsung-Hsun Yang; Yeh-Wei Yu; Si-Min Chou

doi:10.1117/12.2320190

17 September 2018 Design of coded structured light based on square-shaped primitives

Chi-Chung Lau, Ching-Cherng Sun, Tsung-Hsun Yang, Yeh-Wei Yu, Si-Min Chou

Proceedings Volume 10745, Current Developments in Lens Design and Optical Engineering XIX; 1074504 (2018) https://doi.org/10.1117/12.2320190
Event: SPIE Optical Engineering + Applications, 2018, San Diego, California, United States

Abstract

This paper presents a new pattern design for encoding structured light for scanning 3D surface and the decoding process. The basic unit of the pattern is a code-block that contains one central label and eight square-shaped primitives that provide two functions: code-block indexing and point-positions for triangulating. The square-shaped primitive has one notch in a different position to represent 8 digit numbers, which are easily to convert label to number for indexing codeblock. One primitive also contributes five point-positions, centroid and four extreme, for triangulating and estimating 3D information. The design of code-block has eight 8-bit numbers allowing a higher error-tolerant and providing better resolution in 3D reconstruction. Experiment shows that the proposed pattern is suitable for indoor mapping and large scene scanning.

Conference Presentation

Citation Download Citation

Chi-Chung Lau, Ching-Cherng Sun, Tsung-Hsun Yang, Yeh-Wei Yu, and Si-Min Chou "Design of coded structured light based on square-shaped primitives", Proc. SPIE 10745, Current Developments in Lens Design and Optical Engineering XIX, 1074504 (17 September 2018); https://doi.org/10.1117/12.2320190

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