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Development of a new dual‐pattern fringe projection scanner
Author(s) -
Abzal Ali,
Saadatseresht Mohammad,
Varshosaz Masood
Publication year - 2019
Publication title -
the photogrammetric record
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.638
H-Index - 51
eISSN - 1477-9730
pISSN - 0031-868X
DOI - 10.1111/phor.12269
Subject(s) - scanner , structured light 3d scanner , projection (relational algebra) , artificial intelligence , dual (grammatical number) , computer vision , object (grammar) , computer science , point (geometry) , pattern recognition (psychology) , mathematics , algorithm , geometry , art , literature
This paper proposes a new fringe projection scanner that uses a dual pattern to prevent phase retrieval errors or complications. The pattern comprises two horizontal and vertical patterns, however, just one of them is involved in computing the coordinates of an object point. To define the pattern, a photometric stereo component is used to extract the geometric properties of the object. The extracted data is employed to form a decision mask, each pixel of which defines the best pattern (horizontal, vertical or both) related to one of the object points. In this way, the scanner determines which pattern to use to obtain the most accurate results. Experiments suggest not only the avoidance of phase retrieval problems, but also an increase in the accuracy of the measurements (by 56 % in this test).