System and method for reconstructing surface of object

Abstract

The invention relates to a system and a method for reconstructing a surface of an object. The system comprises an illumination assembly, an image sensor, a controller and a data processing unit, wherein the illumination assembly comprises a light source and a mirror reflection device for forming structural light patterns in a target area; the image sensor is used for gradually exposing to shoot projection images of the structural light patterns of at least partial area in the target area; the controller is used for controlling synchronization of the exposed area of the image sensor and the projected area of the structural light reflected by the mirror reflection device; and the data processing unit is used for receiving and acquiring the projection image and structural light pattern displacement values in the pre-shot reference images in real time and calculating three-dimensional point cloud data of the object in the target area. The real-time motion data of the moving object can be acquired by projecting the preset structural light patterns in the target area as required, controlling synchronous exposure of the image sensor to shoot the projection images of at least partial areain the target area and comparing the projection images with the reference images to calculate the three-dimensional depth data of the object in the target area.

Description

technical field [0001] The present invention relates to a three-dimensional image reconstruction technology, and more specifically, to a system and method for object surface reconstruction. Background technique [0002] Point cloud data is the points obtained by direct sampling of the surface of the object by using the 3D scanning equipment. These points are the initial and most direct representation of the surface of the 3D model. By analyzing the point cloud data, the geometric surface of the model can be reconstructed. [0003] There are many ways to acquire object point clouds. Common methods include using structured light image information to acquire point cloud data, and binocular visible light image information to acquire data. The existing speckle-based method for 3D reconstruction of speckle structured light projected, the speckle pattern is fixed in the pattern generator and does not change. Due to the characteristics of speckle, the equipment requirements for the...

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a method that can solve the problem that the speckle structured light projected by the existing speckle-based method is fixed, so that the equipment requirements of the image sensor are relatively high and the equipment is less flexible. System and method for object surface reconstruction by controlling specular reflection device as required, thereby generating structured light pattern suitable for measurement object, and synchronously controlling image sensor to scan required area

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