彩色結構光快速三維量測系統

本研究目的在於開發出一種新的結構光編解碼方式來對物體進行三維重建，傳統較常見的結構光三維重建儀器多使用格雷編碼(Gray Code)進行量測，雖然精度很高但過程需耗費不少時間，因此本文結合彩色結構光編碼和傳統格雷編碼，產生出新的編碼投影圖案，希望利用彩色影像的三通道特性代替黑白的二值影像來減少投影的張數，以達到節省時間、快速掃描的效果，同時保留格雷編碼的高精度和高穩定性特性來維持一定的精度。根據本研究的實驗結果，本研究所提出的編解碼方法相對於格雷編碼確實可以減少一半的投影張數，且具有一定的精準度。

關鍵字

結構光；編碼；三維重建

並列摘要

The structured-light 3D scanner is commonly used for measuring the 3D shape of an object. Through projecting designed light patterns on the object, deformed patterns can be obtained and used for the geometric shape reconstruction. At present, Gray code is the most reliable and commonly used light pattern in the structured-light 3D scanner. However, the trade-off between scanning efficiency and accuracy is a long standing and challenging problem. The design of light patterns plays a significant role in the scanning efficiency and accuracy. Thereby, we proposed a novel encoding method integrating color information and Gray-code to improve the scanning efficiency. We will demonstrate that with the proposed method, the scanning time can be reduced to approximate half of the one needed by Gray-code without reduction of precision.

並列關鍵字

Structured light scanner ； coding ； 3D reconstruction

參考文獻

[1] Liang-Chia Chen and Chung-Chih Huang, “Miniaturized 3D surface profilometer using digital fringe projection,” Institute Of Physics Publishing Meas. Sci. Technol. 16, pp. 1061–1068, 2005

[2] Salvi, Joaquim, Jordi Pages, and Joan Batlle, “Pattern codification strategies in structured light systems,” Pattern recognition 37.4, pp. 827-849, 2004

[3] Zhang, Li, Brian Curless, and Steven M. Seitz, “Rapid shape acquisition using color structured light and multi-pass dynamic programming,” IEEE 3D Data Processing Visualization and Transmission, pp. 24-36, 2002

[5] Barone, Sandro, Alessandro Paoli, and Armando Viviano Razionale, “A coded structured light system based on primary color stripe projection and monochrome imaging,” Sensors 13.10, pp. 13802-13819, 2013

[6] Caspi, Dalit, Nahum Kiryati, and Joseph Shami, “Range imaging with adaptive color structured light,” IEEE Transactions on Pattern analysis and machine intelligence 20.5, pp. 470-480, 1998

國際替代計量

彩色結構光快速三維量測系統

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