A Thin Line Power Increase Stereo Matching Method Used in High-Precision Three-Dimensional Measurement

It´s a difficult problem in three-dimensional visual measurement to improve the precision and accuracy of stereo matching. In this paper, a thin line power increase (TLPI) stereo matching method used in high-precision three-dimensional visual measurement is designed. It´s a coding and stereo matching method which combines the second power increases method, the step moving method, the difference shadow method, the progressive decrease method and the stereo matching method. Through the combination of the second power increases method and the step moving method, the projectile optical information can cover all the measured object space. Through the difference shadow method, the background interference of the measured space can be wiped off. Through the progressive decrease method, the searching range of the optical information can be narrowed; the speed and the precision of optical information matching will be improved. Through the stereo matching method, the three-dimensional coordinate of object can be calculated. The thin line power increase method designed by this paper can solve the problem of misjudgment and improve the precision and reliability of three-dimensional measurement.