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Three-dimensional reconstruction method on basis of image

A three-dimensional reconstruction and image technology, applied in image analysis, image data processing, instruments, etc., can solve the problems of slow reconstruction speed, large influence of surface properties, high cost of use, etc., and achieve good reconstruction effect

Inactive Publication Date: 2009-03-11
PEKING UNIV
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AI Technical Summary

Problems solved by technology

[0010] The purpose of the present invention is to provide a method for three-dimensional reconstruction of multiple images based on feature point constraints. Combining the advantages of the fourth and second methods above, by combining feature point constraints and color consistency, the surrounding image points can be utilized The feature point information is used as a distance search constraint, which improves the efficiency and solves the problems of slow reconstruction speed, high cost of use and great influence on the surface properties of the object in the existing technology

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  • Three-dimensional reconstruction method on basis of image
  • Three-dimensional reconstruction method on basis of image
  • Three-dimensional reconstruction method on basis of image

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Embodiment Construction

[0037] The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0038] figure 1 Shown is a schematic diagram of a spatial point P captured by a camera and projected onto an image, where the projected point on the i-th image is p. The problem now is that p is known, and its position in space needs to be obtained. It can be understood intuitively that the position of point P in space may be on the line connecting the image point p and the optical center, but it is impossible to determine which point on this line is the point to be found. The idea of ​​the 3D reconstruction method based on multiple images is: limit a range (line segment p in the figure n p f ), and project all points in this range onto other images to get the most probable point according to the color consistency.

[0039] The reconstruction principle of the stereo vision method based on multiple images is to extract and match fea...

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Abstract

The invention relates to a three-dimensional reconstruction method of a plurality of images which are bound based on characteristic points. The method comprises the steps as follows: the characteristic points of each image are calculated for the three-dimensional reconstruction of the characteristic points of each image and three-dimensional reconstruction is carried out to each characteristic point to determine the search scope of the space positions of the points waiting to be reconstructed; sampling is carried out to the points within the search scope, all sampling points are projected to an image, and then positions of the points waiting to be reconstructed in the space are obtained according to consistency of color. The method has the advantages of being simple and practical and having good reconstruction effect.

Description

technical field [0001] The invention relates to the field of computer vision, in particular to the field of three-dimensional data acquisition of objects. Background technique [0002] The method of 3D data acquisition is one of the hot issues in the fields of computer vision and metrology. With nearly 20 to 30 years of research, many 3D data acquisition methods have been successfully applied in many fields such as reverse engineering, industrial inspection, anthropometry, cultural relics protection, and virtual reality. Most of the technologies used in these mature methods are three-dimensional scanning technology. This type of method uses active means such as projecting laser light and surface structured light on the object, and uses triangulation or light time-of-flight methods to realize the three-dimensional surface information of the object. Obtain. This type of method can obtain relatively fine 3D data on the surface of objects, but there are problems such as slow s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T7/00
Inventor 李仁举查红彬马祥音彭琨英向华
Owner PEKING UNIV
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