Gray fringe pattern design method for three-dimensional measurement
The invention discloses a gray fringe pattern design method for three-dimensional measurement, which comprises the following steps of: coding more than two black and white binary fringes by referring to a gray fringe pattern for actual three-dimensional measurement, such as sine Gray codes and the l...
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Main Authors | , , , , , , , , |
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Format | Patent |
Language | Chinese English |
Published |
05.04.2022
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Subjects | |
Online Access | Get full text |
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Summary: | The invention discloses a gray fringe pattern design method for three-dimensional measurement, which comprises the following steps of: coding more than two black and white binary fringes by referring to a gray fringe pattern for actual three-dimensional measurement, such as sine Gray codes and the like, so that a pattern formed by the coded individual black and white fringes participating in a series of operations is consistent with a reference pattern. The adopted binary fringes are not influenced by nonlinearity, so that the projection equipment does not need to be subjected to nonlinear correction in advance. Compared with a traditional stripe measurement method, defocusing operation is not needed in the process of constructing gray stripes by using black and white stripes, equipment does not need to have a defocusing function, and hardware limitation is small; the influence of reducing the stripe contrast and aggravating stripe edge jump during phase solution is avoided; and the number of coding fringe pa |
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Bibliography: | Application Number: CN202111498981 |