Absolute Phase Measurement Method for Digital 3D Profilometry System
Absolute Phase Measurement Method for Digital 3D Profilometry System
- New search for: Yang, LianXiang
- New search for: Liu, Sheng
- New search for: Yang, LianXiang
- New search for: Liu, Sheng
Digital 3D profilometry is a non-contact, full-field, and fast method for 3D profile digitization. It has a relatively simple setup and acceptable measurement accuracy. Traditional phase shifting technique uses single frequency fringe pattern for coding the depth information and an unwrapping procedure is required for decoding. Usually, the object has to be a continuous surface without any disconnected part or large height discontinuities. In this paper, a new method of three-frequency fringe pattern is presented to measure objects with complicated structures, which have large surface height discontinuities, or contain separated components. Principles and procedures are described. Experimental application is given and limitations are discussed.
Document information
Absolute Phase Measurement Method for Digital 3D Profilometry System
Sae Technical Papers
SAE 2006 World Congress & Exhibition ; 2006
2006-04-03
Conference paper
English
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