VDI2614/2634是三维光学测量系统精度评价的通用方法。为制订国标《锻压制件及其模具光学三维几何量检测规范》，提出了一种应用于锻压制件的光学测量系统精度评价新方法，并制定了测量方案。以每组为一个子系统，分别计算出每组的极差、平均差和标准差，然后定义平均差和测量平均值的比值为子系统的系统相对误差，定义极差和测量平均值的比值为子系统的偶然相对误差。综合考虑各子系统的相对误差和权重，计算出测量系统的系统精度和偶然精度。为统一评价标准，提出了标准系统精度、标准偶然精度和标准精度的概念和计算方法。利用此方法对自主开发的XJTUOM光学测量系统进行了评价，得出其标准精度为0.89的结论，该方法为锻压制件检测的国标制定提供了参考。

VDI2614/2634 is a kind of common method of precision evaluation for 3D optical measuring systems.In order to formulate a national standard named Measurement Specification of Optical 3D Geometry for Forgings & Stampings and Its Dies，a new evaluation method for optical measuring system imposed on forgings/stampings is proposed and the testing project is also drafted.With the evaluation, each group measuring value is considered as a single subsystem, and the minmax-difference， mean difference and the mean square value of each group are calculated. Then,the ratio of the mean difference to the measurement mean value is defined as the system-relatively error of subsystem and the ratio of the minmax difference to the measurement mean value is defined as the accidence-relatively error of the subsystem.In consideration of the relatively error and weights completely, the system errors and accident errors of the measurement system are calculated. For the reunification of evaluation standard, the concept and the calculation method comprised of standardized system precision, standard accidental precision and standardized precision are put forward. The XJTUOM optical measuring system developed by ourselves has been evaluated by the proposed approach, then the standard precision of 0.89 is obtained,which provides a reference for formulating national standards.