Patent Document ID: 20120027289
Application ID: 13182499
Patent Status: 0

Claim One:
1. An image measurement device for obtaining a workpiece image by imaging the workpiece and measuring a size of the workpiece based on edge positions of the workpiece image, the image measurement device comprising; an edge extraction section for extracting the edges from the workpiece image; an image comparison section for comparing the workpiece image and a previously stored design data; an error calculation section for calculating the errors indicating an amount of displacement between the edge positions of the workpiece image and positions of the design data corresponding to the edge positions; a statistical information calculation section for calculating the statistical information of the errors respectively calculated for a plurality of workpiece images for the each edge positions; and a statistical information display section for displaying the statistical information along the edge positions extracted from the workpiece image or the design data in a display mode suitable for the values of the statistical information.