Rapid three-dimensional reconstruction method and system based on light field digit refocusing

Abstract

The invention provides a rapid three-dimensional reconstruction method based on light field digit refocusing. The method includes the following steps: firstly, a light field data obtaining device obtains space four-dimensional light field data; secondly, a digit refocusing module conducts digit refocusing processing on the space four-dimensional light field data to obtain a focusing plane sequence image; finally, a three-dimensional reconstruction module conducts three-dimensional reconstruction on the focusing plane sequence image. The invention further provides a rapid three-dimensional reconstruction system based on the light field digit refocusing. The rapid three-dimensional reconstruction system comprises the light field data obtaining device, the digit refocusing module and the three-dimensional reconstruction module. By means of the rapid three-dimensional reconstruction method and system, shooting is only needed one time, a camera and a target do not need to be moved, and results can be checked at any visual angle; the shooting difficulty and the reconstruction algorithm complexity are reduced, the image obtaining time is shortened, the method and system are suitable for three-dimensional reconstruction of the motion target, the application depth scope of a DFF algorithm is expanded, and the method and system are suitable for three-dimensional reconstruction of large-field-depth scenes.

Description

technical field [0001] The invention belongs to the technical fields of computational imaging, image processing and computer vision, and in particular relates to a fast three-dimensional reconstruction method and system based on light field digital refocusing. Background technique [0002] 3D reconstruction refers to the establishment of a mathematical model suitable for computer representation and processing of 3D objects. It is a key technology for establishing a virtual reality that expresses the objective world in a computer. It is widely used in computer animation, virtual reality, industrial inspection and other fields. Vision-based 3D reconstruction technology has formed a variety of theoretical methods, such as active vision method and passive vision method; monocular vision method, binocular vision method, trinocular vision or multi-eye vision method; single-view method and multi-view method. multi-view Figure three Three-dimensional reconstruction uses a camera to...

AI Technical Summary

Problems solved by technology

In 3D reconstruction, the single-camera focus depth measurement method takes a long time to shoot, the process is complicated, and it is not suitable for moving targets

[0006] At present, there is no method and system that can combine light field data acquisition equipment, digital refocusing technology and DFF technology to perform fast 3D reconstruction of the target object

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