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Image-based three-dimensional reconstruction method and system

A 3D reconstruction and image technology, applied in the field of 3D reconstruction, can solve problems such as poor reconstruction effect

Pending Publication Date: 2020-08-07
NANTONG INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the existing image-based 3D reconstruction methods have poor reconstruction results when reconstructing cultural relics

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  • Image-based three-dimensional reconstruction method and system
  • Image-based three-dimensional reconstruction method and system
  • Image-based three-dimensional reconstruction method and system

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Embodiment Construction

[0051] Preferred embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0052] In order to achieve the purpose of the present invention, in some embodiments of an image-based three-dimensional reconstruction method and system, such as figure 1 As shown, an image-based 3D reconstruction method specifically includes the following steps:

[0053] S1: collecting image sequences;

[0054] S2: Use the SIFT algorithm to extract and bidirectionally match feature points on the image obtained in step S1 to obtain SIFT matching feature points, and use the random sampling consensus algorithm to remove incorrectly matched feature points;

[0055] S3: Use the camera self-calibration technology based on the Bundler algorithm to calibrate the camera to obtain a sparse 3D point cloud;

[0056] S4: Use the PMVS algorithm to expand the patch composed of 3D points to obtain a dense 3D point cloud model.

[0057] In order to furth...

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Abstract

The invention discloses an image-based three-dimensional reconstruction method and system. The method specifically comprises the following steps: S1, collecting an image sequence; S2, carrying out feature point extraction and bidirectional matching on the image obtained in the step S1 by using an SIFT algorithm to obtain SIFT matching feature points, and rejecting wrongly matched feature points byusing a random sampling consistency algorithm; S3, calibrating the camera by using a camera self-calibration technology based on a Bundler algorithm to obtain a sparse three-dimensional point cloud;S4, expanding a patch formed by the three-dimensional points by using a PMVS algorithm to obtain a dense three-dimensional space point cloud model. The reconstructed three-dimensional structure is more accurate.

Description

technical field [0001] The invention belongs to three-dimensional reconstruction technology, in particular to an image-based three-dimensional reconstruction method and system. Background technique [0002] 3D reconstruction technology is a technology that constructs a 3D model that reflects a certain scene or object in the real world. At present, smart phones have been widely used, and more and more two-dimensional plane images have been produced. As people's demand for visualization of three-dimensional images is becoming stronger and stronger, the three-dimensional reconstruction technology that can obtain three-dimensional space models is therefore favored. extensive attention. Among them, the image-based 3D reconstruction system can use the 2D image information contained in the photos to reconstruct the 3D space model of the object, which has become a research hotspot nowadays. When reconstructing cultural relic buildings, laser scanners are often used for scanning in...

Claims

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Application Information

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IPC IPC(8): G06T17/00G06K9/46G06K9/62G06T7/80G06T5/00
CPCG06T17/00G06T7/80G06T2207/10028G06V10/462G06F18/22G06T5/70
Inventor 杨雨薇
Owner NANTONG INST OF TECH