Method for acquiring cam contour object shape

Abstract

The invention discloses a method of obtaining a cam contour shape of an object, which uses a video camera for shooting the measured object continuously to get a series of object images. After the object image and a background being segmented, a contour image of the object in a visual angle of every video camera can be obtained. A plurality of object marginal points are arranged on each height of each external contour image; the marginal points and a center of the video camera constitute a section plane. The section plane intersects with the measured object to obtain a cross-section of the object. After the cross-section of the object is processed by a computer, the contour of the object on the cross-section can be obtained, which is called as a residual plot of the object on the cross-section. After all contours of the cross-sections of the object are obtained, a spatial superpose of the object contour is made along the height direction to get an intact three-dimensional model of the object. The method of obtaining the object shape with the cam contour provided by the invention can obtain a plurality of scanning spots, and has the advantages of fast scanning speed, safe and reliable usage, wide scanning range, thereby not only being applied to small-size situation, but also scanning the object with larger size.

Description

technical field [0001] The invention comprehensively applies computer image processing technology and multimedia technology, integrates machinery, electronics, optics and computer technology, and specifically relates to a method for obtaining the shape of a convex object. The information is scanned and restored to the computer at one time. Background technique [0002] Acquisition of stereoscopic information is one of the important tasks in image analysis and computer vision. Scholars at home and abroad have done a lot of work in this field, and some devices have been used in practical work. At present, the work in this area can be divided into two categories from the application purpose, one is to obtain the three-dimensional information of the visual range, just like human vision. This is widely used in fields such as industry, robot vision, military reconnaissance, and geology; the other is to obtain all-round three-dimensional information on the surface of the object ce...

AI Technical Summary

Problems solved by technology

The pulse detection and time measurement devices of this type of device require high precision, are complex, and are expensive (especially when applying to small-scale occasions)

Since each beam can only detect the position of a point on the surface of the object, it takes a long time to complete the scanning of the surface of the object

Simultaneous use of lasers will cause environmental pollution

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