Patent Document ID: 5568566
Application ID: 08173932
Patent Status: 1

Claim One:
1. A drawing processing apparatus for extracting desired figures from a drawing as numerical data, comprising: drawing input means for inputting a background drawing and a to-be-processed drawing and dividing figures drawn on said background drawing and said to-be-processed drawing into a plurality of segments to convert each of the segments to vector data, said to-be-processed drawing including figures drawn on the same figures as said background drawing; storing means for storing said vector data corresponding to said background drawing and said vector data corresponding to said to-be-processed drawing; registration means for registering said background drawing and said to-be-processed drawing with each other using said vector data read out from said storing means; candidate vector extracting means for setting a predetermined circumscribed rectangle for each of said vectors obtained from said background drawing and extracting said vector data obtained from said to-be-processed drawing included in said circumscribed rectangle; calculating means for calculating a degree of overlap between said vector data and said candidate vector data and determining said candidate vector data as a corresponding vector extracted from said background drawing when the degree of overlap is equal to or lower than a predetermined threshold value; and classifying means for classifying vectors, which correspond to the vectors formed from the figure on said background drawing, from the vectors formed from the figure on said to-be-processed drawing.