GB/T 34890-2017

This standard specifies the acceptance and reverification tests for digital photogrammetry 3D coordinate measuring systems, defining procedures to verify that the system meets specified accuracy and performance requirements. It is applied in industrial metrology and quality control contexts, particularly for large-scale or complex part measurement in aerospace, automotive, and manufacturing sectors where non-contact optical measurement is used. The standard ensures consistent evaluation of system errors, such as point determination uncertainty and length measurement errors, during initial installation or periodic revalidation.