Three Dimensional Reconstruction Method Using Spatial Coding Pattern Optical Projection Method

摘要

The present invention relates to a method of extracting a three-dimensional shape of a measurement object using a spatial encoding pattern projection method, and more particularly, to a method of extracting accurate three-dimensional shape information of a target object by synthesizing distance information (distance data) In a conventional three-dimensional shape synthesizing method, distance information pixels in each direction in all directions use all the distance information in the same condition without taking uncertainty into consideration. As a result, An error caused by uncertain distance information is contained in a large amount at the time of synthesis and the accuracy of the three-dimensional shape of the object to be measured is reduced.;Accordingly, in view of the above problems, the present invention provides a method of determining distance information in each direction while rotating an object by using a turntable, obtaining uncertainty information for each distance information pixel, In the process of finding the coincidence point among the information, the candidate pixel with high reliability and the pixel with low reliability are used as the uncertainty filter which is excluded from the candidate. In addition, when the contour data is obtained from the final three-dimensional data by data synthesis, It is possible to achieve more precise shape synthesis than in the case of three-dimensional shape synthesis.