Complete object surface-restoring 3D device based on multiple stereo digital visual heads

Abstract

The body complete surface three-D restoration equipment comprises several digital stereovision heads distributed on a polyhedral support, IEEE 1394 high-speed serial bus and computer; every digital stereovision head can be used to obtain stereoscopic picture pair of different sides of body, the steroscopic picture pair can be transferred into computer by means of IEEE 1394 high-speed serial bus, the computer can be used to process said sterescopic picture to obtain three-D web surface expression of every side of body, and convert the three-D web surface of every side of body into same coordinate and splice to obtain the three-D expression of complete surface of body. Said invention not only can high-accurately restore complete three-D surface of static body, but also can high-accurately restore complete three-D surface of dynamic body or deformed body.

Description

technical field [0001] The invention is a three-dimensional recovery device for the complete surface of an object based on a multi-digital stereo vision head, belongs to the technical field of machine vision, and particularly relates to the stereo vision technology for three-dimensional recovery of the complete surface of an object. Background technique [0002] The three-dimensional surface restoration methods of objects mainly include structured light scanning ranging imaging, lidar scanning ranging imaging, and stereo vision ranging imaging. For example, the ARANZ 3D imager from Applied Research Associates NZ limited in the UK, the ATOS precision optical measuring machine from GOM in Germany, the 3D laser scanners GS100 and S10 / S25 from MENSI in France, etc. The main problems of this type of ranging system are: (1) only the surface of static rigid objects can be restored, and the surface of dynamic objects or deformed objects cannot be restored; (2) to obtain the complete...

AI Technical Summary

Problems solved by technology

The main problems of this type of ranging system are: (1) only the surface of static rigid objects can be restored, and the surface of dynamic or deformed objects cannot be restored; (2) to obtain the complete surface data of the object, it is necessary to rotate the object or the rangefinder Rotate around the object, and finally synthesize the local surface data to obtain a complete three-dimensional image, so it usually takes tens of seconds to tens of minutes; (3) There are many precision moving parts, the technology is complicated, the cost is high, and maintenance and Inconvenient operation and low reliability

The application background of the above-mentioned systems is mainly virtual reality modeling, and their common features are: (1) adopt commercialized CCD cameras, more than a dozen high-performance microcomputers (or workstations) with large memory, and multiple image acquisition cards to collect Image, the system is complex, huge, and costly; (2) Synchronous image acquisition between multiple cameras requires special hardware equipment to complete, and the implementation method is complicated. When performing image analysis, it is necessary to first extract the time information of image acquisition

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