A method for detecting three-dimensional data of an object to be measured, the use of such a method for face recognition and apparatus for carrying out such a method

摘要

A method for detecting three-dimensional data of an object to be measured, comprising the steps of– Projecting a stripe pattern (21; 21a; 21b) by means of a projector (3) to an object to be measured (2), strips (20; 20a; 20b) of the stripe pattern (21; 21a; 21b) a coding in the form of a known sequence of individual - code and wherein each strip (20; 20a; 20b) is assigned a unique strips index,– The accommodation of the projected stripe pattern (21; 21a; 21b) by means of a camera (8),– Transmitting the recorded stripe pattern (21; 21a; 21b) to an evaluation computer (10),– Determining the respective individual - code for all the strips (20; 20a; 20b) of the stripe pattern (21; 21a; 21b) by means of the evaluation computer (10),– Identifying the strips indices of the strips (20; 20a; 20b) of the stripe pattern (21; 21a; 21b) and– Detecting the three-dimensional data of the object (2) on the basis of the indexed strips (20; 20a; 20b),characterized by– Combining of adjacent strips (20; 20a; 20b) to at least one stripe group,– Determining a sequence of the individual - codes of the stripe group,– Comparing the predetermined sequence of the individual - codes of the stripe group with the known sequence of individual - code of the stripe pattern (21; 21a; 21b),– Evaluating a reduced number of strips (20; 20a; 20b) of the stripe group, wherein the coding has perfect or almost perfect autocorrelation properties,– unique identifying all strips (20; 20a; 20b) of the stripe pattern (21; 21a; 21b).