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Three-dimensional object rapid reconstruction method based on camera array

A technology of three-dimensional objects and camera arrays, applied in the field of three-dimensional reconstruction, can solve problems such as difficulties and failed to be solved well, achieve the effect of non-contact computing and avoid time-consuming operations

Active Publication Date: 2019-09-27
10TH RES INST OF CETC
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Problems solved by technology

It is very difficult to determine many of the above factors only by this gray value, and this problem has not been well solved so far.
At present, no matter which matching method is used, it is impossible to recover the disparity of all image points

Method used

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  • Three-dimensional object rapid reconstruction method based on camera array
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  • Three-dimensional object rapid reconstruction method based on camera array

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Embodiment Construction

[0017] refer to figure 1 , figure 2 . According to the present invention, four processes are adopted: structured light projection and camera array 1 acquisition, center depth plane adjustment of deformed stripes, reconstruction of 3D point cloud modulation degree and complete 3D scene model splicing. Among them, the fast reconstruction system of 3D objects based on the camera array includes: a camera array 1 composed of M×N cameras, and the distance between the cameras is d cc , the optical axis of the camera converges at a distance L. The digital projector 2 is placed on the plane where the camera array 1 is located, and is at the center of the camera array 1, and the optical axis of the lens of the digital projector 2 passes through the converging point of the optical axes of the cameras. The optical axis of the digital projector 2 is often taken as the Z axis, and the camera coordinate system is established with the digital projector 2 as the center. Establish the imag...

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Abstract

The invention discloses a three-dimensional object rapid reconstruction method based on a camera array, amd aims to provide a rapid reconstruction method which is high in acquisition precision and can rapidly reconstruct the three-dimensional point cloud of a tested object. The method is realized through the following technical schemes of during the structured light projection and the camera array acquisition, firstly, carrying out digital projector and camera array calibration, collecting a measured three-dimensional scene by utilizing a camera array, obtaining the projection result light stripes and the light stripe images shot by the camera array, and establishing a corresponding relation of the same point in the space on different images; according to the determined shooting center depth plane, calculating the offset of each deformation stripe; carrying out three-dimensional point cloud modulation degree reconstruction according to the deformation stripe center depth plane adjustment, and calculating the modulation degrees of the deformation stripe images with corresponding depth distances and different focusing depths of the deformation stripe images; and registering and reconstructing the three-dimensional point cloud, and iterating a nearest point algorithm to solve the coordinate transformation so as to obtain a complete three-dimensional scene reconstruction model.

Description

technical field [0001] The invention relates to a three-dimensional reconstruction technology for recovering a real world model through images, in particular to a fast reconstruction method of a three-dimensional object based on a camera array. Background technique [0002] 3D reconstruction is a technology and method to obtain 3D coordinates and texture data of the measured object through contact or non-contact measurement. It has a wide range of applications in object recognition, robot navigation, virtual reality, medical image reconstruction, terrain surveying, and industrial inspection. In industry, it can be used for production assembly and inspection of product quality; in medical treatment, it can be used for bone positioning and chest X-ray. Also, it gives people more control over lighting and textures. Its disadvantage is that, first of all, people must fully grasp the scene data, such as the size ratio of objects in the scene, relative positions, etc., and it is...

Claims

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Application Information

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IPC IPC(8): G06T7/521G06T7/55G06T7/80G06T7/33
CPCG06T7/521G06T7/55G06T7/80G06T7/33G06T2207/10028G06T2207/30208G06T2200/32
Inventor 熊召龙赖作镁
Owner 10TH RES INST OF CETC
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