US Patent No. 9,267,790

MEASURING DEVICE OF MEASUREMENT OBJECT, CALCULATING DEVICE, MEASUREMENT METHOD, AND METHOD FOR PRODUCING ITEM


Patent No. 9,267,790
Issue Date February 23, 2016
Title Measuring Device Of Measurement Object, Calculating Device, Measurement Method, And Method For Producing Item
Inventorship Takanori Uemura, Saitama (JP)
Assignee Canon Kabushiki Kaisha, Tokyo (JP)

Claim of US Patent No. 9,267,790

1. A measuring device that measures a measurement object, the measuring device comprising:
a two-dimensional measuring unit that obtains two-dimensional image data by performing image pickup on the measurement object;
a three-dimensional measuring unit that obtains three-dimensional data by three-dimensionally measuring the measurement object;
and

an obtaining unit that detects a temporary edge of the measurement object using the three-dimensional data, sets an edge detection
range in a two-dimensional image using the detected temporary edge, and detects an edge of the measurement object in the edge
detection range using the two-dimensional image data to obtain shape information of the measurement object.