Structural parameters analysis and optimization of line-structured light measuring system

Structural parameter is an important factor which limits the improvement of precision in the three-dimensional measuring system of line-structured light. In order to improve the precision, we have developed an improved approach for choosing optimal structural parameters. A unified mathematical model with advantages of ease of use and compatibility is established. On this basis, errors of three-dimensional vision measuring system and the effects of the structural parameters on precision are analyzed in detail. The approach takes various factors into account which limit the option of structural parameters, so the selected values of structural parameters are more practical for applications than before. According to these, the optimization criterion and constraint conditions of the structural parameters are given. An example illustrates the specific design process very well.