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Full-automatic three-dimensional scene construction method based on single image

A 3D scene, fully automatic technology, used in image data processing, 3D modeling, instrumentation, etc.

Active Publication Date: 2014-11-05
UNIV OF SCI & TECH OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Interactive modeling methods are highly accurate, but require user interaction guidance

Method used

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  • Full-automatic three-dimensional scene construction method based on single image
  • Full-automatic three-dimensional scene construction method based on single image
  • Full-automatic three-dimensional scene construction method based on single image

Examples

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Embodiment 1

[0065] figure 1 It is a system flowchart of a fully automatic single image-based 3D scene modeling method provided by Embodiment 1 of the present invention. The main steps of embodiment one include:

[0066] Step 1. Use the training image set to obtain a classifier capable of dividing the image into geometric regions.

[0067] Because the classifier for image geometric region division in the embodiment of the present invention is obtained based on machine learning, it is first necessary to collect a training image set, then use the training image set to obtain a set of training samples, and finally use the training samples to train the classifier.

[0068] Collections of training image sets are available through internet searches. Since the content of outdoor scene images is ever-changing, the collected training images should be representative and cover as many possible outdoor scenes as possible. attached figure 2 Part of the images in the training image set used in Exam...

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Abstract

The invention discloses a full-automatic three-dimensional scene construction method based on a single image. The full-automatic three-dimensional scene construction method based on the single image comprises the following steps: on the basis of a machine learning method, utilizing a training image set to train to obtain a classifier which can roughly classify and label an input image; dividing the input image into three subareas, i.e. a vertical area, ground and sky, by utilizing the classifier to obtain a rough classifying and labeling result of image areas; on the basis of a "trustable" area in the rough classifying and labeling result, correcting the rough classifying and labeling result by utilizing a GrabCut image segmentation algorithm, and obtaining a precise boundary between image geometry areas; and on the basis of obtaining the precise classifying and labeling results of the image geometry areas and the precise boundary between the image geometry areas, carrying out modeling with a realistic three-dimensional scene by utilizing a computer graphics method. The method disclosed by the invention realizes the three-dimensional scene construction based on the single image.

Description

technical field [0001] The invention relates to the field of image-based modeling, in particular to a fully automatic three-dimensional scene construction method based on a single image. Background technique [0002] Image-based 3D reconstruction technology can construct realistic 3D graphics from 2D images. Image-based modeling is a new technology that has emerged in recent years. It uses directly captured images and uses as few interactive operations as possible to reconstruct the scene. Its biggest feature is to overcome the shortcomings of traditional geometric modeling and rendering technology, and can realize real-time roaming with photorealistic scenes on a computer with only ordinary computing power. Although the traditional 3D modeling tools are improving day by day, it is still a very time-consuming and labor-intensive task to construct a somewhat complicated 3D model. Considering that many 3D models to be constructed can be found or shaped in the real world, 3D ...

Claims

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Application Information

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IPC IPC(8): G06T17/00
Inventor 陈雪锦王贵杭胡思宇
Owner UNIV OF SCI & TECH OF CHINA
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