자료유형  

 학위논문

Control Number  

0015494161

International Standard Book Number  

9781085657907

Dewey Decimal Classification Number  

624

Main Entry-Personal Name  

Zhang, Yujia.

Publication, Distribution, etc. (Imprint  

[Sl] : The Ohio State University, 2019

Publication, Distribution, etc. (Imprint  

Ann Arbor : ProQuest Dissertations & Theses, 2019

Physical Description  

142 p

General Note  

Source: Dissertations Abstracts International, Volume: 81-02, Section: B.

General Note  

Advisor: Yilmaz, Alper.

Dissertation Note  

Thesis (Ph.D.)--The Ohio State University, 2019.

Restrictions on Access Note  

This item must not be sold to any third party vendors.

Summary, Etc.  

요약Coded structured light is one of the most effective and reliable techniques for surface reconstruction. With a calibrated projector-camera stereo system, a set of illuminating patterns are projected onto the scene by projector and the image is captured by the camera. The correspondences between projector and camera frames are calculated in the decoding process, which is used for triangulation and point cloud generation. Continuous phase shifting method is a well-known fringe projection technique for 3D scanning. A set of sinusoidal patterns showing variation of intensity or color are projected onto the surface. This proposal, introduces a novel circular phase shifting method to improve the decoding accuracy, without the trade-off between the processing speed and decoding accuracy. In the proposed approach, three-step circular phase shifting and absolute patterns are used for increasing the multiplicity since the circular patterns are coded in all directions. The stereo triangulation is more stable and accurate than line-plane intersection used in single axis structured light methods by reducing incorrect decoding errors. Robust gray patterns are applied to resolve the ambiguity resolution caused by reflectance discontinuities in the phase shifting decoding process.

Subject Added Entry-Topical Term  

Geography

Subject Added Entry-Topical Term  

Optics

Subject Added Entry-Topical Term  

Geology

Subject Added Entry-Topical Term  

Civil engineering

Added Entry-Corporate Name  

The Ohio State University Geodetic Science

Host Item Entry  

Dissertations Abstracts International. 81-02B.

Host Item Entry  

Dissertation Abstract International

Electronic Location and Access  

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Control Number  

joongbu:568626