Double-frequency simulation coding light fault-tolerant phase expansion engineering method
A phase unwrapping and analog coding technology, applied in the field of coded light three-dimensional measurement, can solve the problems of phase jump, complex unwrapping algorithm, phase value measurement error, etc., to achieve the effect of easy calculation and avoid gross measurement errors
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[0033] The present invention will be further explained below in conjunction with the drawings and specific embodiments:
[0034] 1. Deduction of ideal phase unwrapping model
[0035] During the measurement, the phase unwrapping value Y Is the final unknown quantity to be sought; a 1 with a 2 Is the initially set known quantity; k 1 with k 2 Is the unknown quantity in the process; Represents the phase in a certain period of the analog code 1, Represents the phase within a certain period of the analog code 2, with Obtained by measurement.
[0036] Establish a mathematical model to express , versus k 1 , k 2 The relationship of, obtained by solving the mathematical model k 1 , k 2 , And then obtain by formula (3) or formula (4) Y .
[0037] In response to the above problems, analyze figure 1 in k 1 , k 2 versus , The positional relationship between them along the horizontal axis forms the corresponding relationship in Table 1. because , Then every , figure 1 The positional re...
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