Based on the visual universal tool-microscope

CCD image sensor is used to design electronic eyepiece to capture images

and grating ruler is used to realize mobile measurement of two-dimensional platform of universal tool-microscope.Respectively using the USB port and serial port to realize that the images data and the grating data are collected automatically by the computer.The second grade precision of millimeter-scale glass ulnar is used to calibrate video measurement system.Electronic eyepiece is used to collect its 1mm scale image

then software is used to process pictures by pixel segmentation

denoising

binary and reticle thinning for calibration of video measurement system.The first grade precision of 0.01mm glass ulnar is used to verify the results of calibration.It shows that the results of calibration meet the requirements of measurement.