An integrated vision touch-probe system for dimensional inspection tasks

esian ional hether rfaces, r many e order gger in probe ns of An Integrated Vision Touch-Probe System for Dimensional Inspection Tasks Marilyn Nashman, William Rippey, Tsai Hong Hong, Martin Herman National Institute of Standards and Technology Building 220/B124 Gaithersburg, MD 20899 Abstract This paper discusses the integration of vision and touch sensors in a coordinate mea machine (CMM) controller used for dimensional inspection tasks. A real-time hierarchical co system is presented in which a vision system extracts positions of features on a part to be ins and then guides a touch probe to efficiently measure these features. The probe is tracked vision system as it scans surfaces so that it's motion can be visually servoed. Minimalist s derived representations, involving only task-specific information, are used in this pro Although the camera itself remains uncalibrated, a real-time calibration of very limited sco performed each processing cycle to transform the task-specific image information into information used as feedback to guide the probe.