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SYSTEM AND METHOD FOR COMPENSATING FOR NON-LINEAR RESPONSE CHARACTERISTIC IN PHASE-SHIFTING DEFLECTOMETRY
SYSTEM AND METHOD FOR COMPENSATING FOR NON-LINEAR RESPONSE CHARACTERISTIC IN PHASE-SHIFTING DEFLECTOMETRY
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机译:用于补偿相移偏转测量中的非线性响应特性的系统和方法
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摘要
The present disclosure is directed to a system and a method for compensating non-linear response characteristics in measuring the shape of an object using phase-shifting deflectometry. More particularly, the present disclosure is directed to a method for compensating non-linear response characteristics in phase-shifting deflectometry including steps of: generating a pattern by a pattern generating portion and projecting the same to a measurement object; obtaining an image of a deformed pattern reflected from the measurement object by a detector; linearizing non-linear responses on the basis of a look up table considering non-linear response characteristics of the pattern generating portion and the detector by a compensation means; and compensating phase-shifting amounts generated due to non-linear response characteristics by the compensation means.
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