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Image reconstruction method and system

An image reconstruction and image technology, applied in the direction of 2D image generation, image analysis, image data processing, etc., can solve the problems of reducing the accuracy of image reconstruction and reconstruction accuracy, to remove adverse effects, improve accuracy and accuracy degree, the effect of saving computing time

Active Publication Date: 2013-12-04
BEIHANG UNIV
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AI Technical Summary

Problems solved by technology

Among them, although the factorization method has high reconstruction accuracy and can allow a small number of points to be missing in the image, it requires that the same reconstruction point (the spatial three-dimensional point of the scene image) must appear in each image
The sequential method does not require the constraint that the reconstruction point must be visible, so the amount of calculation is moderate, which greatly saves computing resources; but sometimes, the sequential method does not only reconstruct the same 3D point in some 3D points once , but to perform multiple reconstructions, which reduces the accuracy of image reconstruction and reconstruction precision

Method used

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Embodiment Construction

[0056] Embodiments of the present invention provide a method for image reconstruction, such as figure 1 As shown, the method includes:

[0057] Step 1: Acquire at least three images of the same scene.

[0058] Here, the shooting position of the camera is changed at least three times, and the same scene is shot once at different shooting positions of the camera to obtain a corresponding image; the distance between every two shooting positions must be within the set range, that is to say , there must be associated scenes between the images obtained by multiple shootings.

[0059] Based on the sequential shooting of the scene by the camera, the images captured are identified as image I in sequence 1 , Image I 2 , Image I 3 ...image I N ; Wherein, N is a positive integer greater than or equal to 3.

[0060] Step 2: Select two adjacent images I in the at least three images i with I （i+1） As an object for initial reconstruction, and use the object to perform initial reconstr...

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Abstract

The invention discloses an image reconstruction method. The method comprises obtaining at least three images of a same scene, selecting the two adjacent images of an image Ii and an image I (i+1) to perform initial reconstruction on the scene, reconstructing the scene by using the image I (i+1) and a selected image I (i+2) adjacent to the image I (i+1) and deleting repeated reconstruction points generated during reconstruction. The invention further discloses an image reconstruction system. By means of the image reconstruction method and system, the precision and accuracy of image reconstruction can be improved, and the evaluation process is simple and practical.

Description

technical field [0001] The invention relates to machine vision technology, in particular to an image reconstruction method and system for scene images in space. Background technique [0002] At present, the methods for obtaining 3D information of a certain scene image in space are roughly divided into the following two types: one is to obtain the 3D information of the scene by actively scanning the scene, which is an active technology; the other is to obtain the 3D information of the scene by actively scanning the scene; The method of obtaining the three-dimensional information of the scene by establishing a model related to the three-dimensional information of the scene and solving the parameters in the model is a passive technology. Among the above passive techniques, Shape From Motion (SFM) has been widely used because of its advantage of being able to reconstruct scene images using only one camera. [0003] The basic principle of the SFM is: use a camera to shoot the sa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T11/00G06T7/00
Inventor 魏振忠丁博深王巍
Owner BEIHANG UNIV
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