One-shot pattern projection for dense and accurate 3D reconstruction in structured light
This thesis focuses on the problem of 3D acquisition using coded structured light (CSL). In CSL, a projected pattern impinges artificial texture onto the object surface, increasing the number of correspondences in the retrieved image. Finally, 3D acquisition is pursued by triangulation. An active re...
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| Format: | doctoral thesis |
| Status: | Published version |
| Publication Date: | 2012 |
| Country: | España |
| Institution: | CBUC, CESCA |
| Repository: | TDR. Tesis Doctorales en Red |
| OAI Identifier: | oai:www.tdx.cat:10803/83621 |
| Online Access: | http://hdl.handle.net/10803/83621 |
| Access Level: | Open access |
| Keyword: | Structured light Llum estructurada Luz estructurada Active stereovision One-shot projection Computer vision Visión por ordenador Visió per ordinador Dense 3D acquisition Reconstrucción 3D densa Reconstrucció 3D densa 68 |
| Summary: | This thesis focuses on the problem of 3D acquisition using coded structured light (CSL). In CSL, a projected pattern impinges artificial texture onto the object surface, increasing the number of correspondences in the retrieved image. Finally, 3D acquisition is pursued by triangulation. An active research is being done in CSL techniques for moving scenarios. In this thesis, a review of the main CSL approaches is presented. Afterwards, we perform a deep study of the two most used frequency-based techniques, and a new proposal for automatic selection of the window width using Windowed Fourier Transform (WFT). Using this analysis, we implemented a new technique for one-shot dense acquisition, able to work in moving scenarios. The technique is based on adaptive WFT and DeBruijn coding. The results show the proposed method obtains dense acquisition with accuracy levels comparable to DeBruijn algorithms. Finally, the thesis focuses on the problem of registration in SL. |
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