Back to results
US 8,941,732 B2Granted
Three-dimensional measuring method
AssigneeCanon Kabushiki Kaisha
InventorKota Tani
Life of this patent
Estimating the term…
Abstract
Provided is a three-dimensional measuring method that can select a large number of line sections for calculating formulas of three-dimensional lines to perform three-dimensional measurement of a measurement object.
Claims4
A three-dimensional measuring method comprising the steps of:
- obtaining design data of a measurement object;
- obtaining a first image of the measurement object taken by a first camera and a second image of the measurement object taken by a second camera from a viewpoint different from the first image;
- detecting a plurality of line sections of the measurement object from the first and second images and selecting at least a first line section and a second line section from the plurality of line sections;
- using a stereo method to calculate a formula of a three-dimensional line of the first line section;
- using the formula of the three-dimensional line of the first line section and a geometric constraint condition for the first line section obtained from the design data of the measurement object to calculate a formula of a three-dimensional line of the second line section;
- and
- using the formulas of the three-dimensional lines of the first and second line sections to measure a three-dimensional position or pose of the measurement object.
4 more elements
Dependencies are inferred from the claim text.