Recognition method of the dual-objective in a linear array CCD-based improved photoelectric measurement system using two lasers with different wavelengths

Abstract

This paper proposes a dual-objective recognition method using a linear array CCD–based improved photoelectric measurement system with two different lasers. Firstly, the measurement system consists of a linear color CCD camera, two lasers with different wavelengths and a projection board. Next, its measurement principle and image process are introduced, respectively. Using the channel separation, signal recognition and mutual comparison of the image can be captured by the CCD camera, and then the coordinates of the two objectives are obtained. Simulation experiments show that the error standard deviations of coordinate measurement in the X and Y directions are 1.2 mm and 4.1 mm, respectively, if the effective detection area is 1 m × 1 m. The method can meet the requirements of the measurement.