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Multi-view three-dimensional point set recovery method based on monocular camera

A restoration method, multi-view technology, applied in the interdisciplinary field, which can solve the problems of high occupancy space and slow reconstruction speed

Pending Publication Date: 2020-03-24
XIAN UNIV OF TECH
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

This method does not require high image quality, and the reconstruction effect is often proportional to the number of input images, which can well meet the needs of 3D modeling of large scenes such as indoors and outdoors. Disadvantages of high space and slow reconstruction speed

Method used

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  • Multi-view three-dimensional point set recovery method based on monocular camera
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  • Multi-view three-dimensional point set recovery method based on monocular camera

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Embodiment Construction

[0108] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0109] The present invention is based on a monocular camera multi-viewpoint three-dimensional point set recovery method, which is specifically implemented according to the following steps:

[0110] Step 1, use the improved Zhang's calibration method to estimate the internal parameters of the monocular camera, specifically:

[0111] Step 1.1, select a 6×8 black and white checkerboard picture as the calibration object, and maximize the electronic picture on the computer screen before calibration as the calibration board;

[0112] Step 1.2, use a monocular camera to shoot the calibration object from multiple angles, obtain 18 calibration photos, and randomly select 14, 16, and 18 photos from the 18 photos and put them into three sets respectively;

[0113] Step 1.3, traversing one of the collections for initial corner point extraction, and usin...

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Abstract

The invention discloses a multi-view three-dimensional point set recovery method based on a monocular camera. The method specifically comprises the following steps: estimating internal parameters of amonocular camera, calculating external parameters of the camera, collecting and preprocessing multiple viewpoints of an image, extracting feature points of the processed image, matching the feature points, and solving an initial three-dimensional point cloud according to a matched feature point set; and calculating, denoising and segmenting the initial point cloud to obtain processed three-dimensional point cloud data of each independent object, and performing fitting processing on the obtained point cloud data to realize reconstruction of each object in multiple views acquired by the monocular camera. According to the multi-view three-dimensional point set recovery method based on the monocular camera, recovery of the three-dimensional point set of the object in the scene can be completed by using a small number of images.

Description

technical field [0001] The invention belongs to the interdisciplinary technical field of combining computer graphics and virtual reality, and relates to a multi-viewpoint three-dimensional point set restoration method based on a monocular camera. Background technique [0002] Camera-based 3D reconstruction can describe the object or scene in the 2D image into a mathematical model that conforms to the logical expression of the computer through a series of processes such as preprocessing, registration and fusion, depth data acquisition, and surface generation. This mathematical model can play an important auxiliary role in 3D printing, virtual reality, game development, clinical medicine and other research. [0003] At present, the 3D reconstruction methods based on monocular vision mainly include: [0004] ①Shading recovery method (Shading from Shading, SFS) [0005] The method uses the reflection illumination model as a reference, and restores the normal vector information...

Claims

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Application Information

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IPC IPC(8): G06T7/33G06T7/80
CPCG06T7/33G06T7/80G06T2207/30208
Inventor 王映辉赵艳妮宁小娟李晓文
Owner XIAN UNIV OF TECH
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