A slag slice image segmentation method based on laser three-dimensional camera

A 3D camera and image segmentation technology, which is applied in image analysis, image enhancement, image data processing, etc., can solve the problems of mutual stacking and occlusion of slag slices, large technical difficulty of slag slice image segmentation and subsequent feature extraction, and affect accuracy. To achieve the effect of improving the statistical accuracy

CN109410237AActive Publication Date: 2019-03-01CHINA RAILWAY ENGINEERING EQUIPMENT GROUP CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2019-03-01

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Abstract

The invention provides a slag slice image segmentation method based on a laser three-dimensional camera. The method comprises the following steps: a feature extraction unit of the slag slice spatial information is composed of a plurality of scanning lines generated by the laser three-dimensional camera; the properties of slag slices are judged comprehensively by comprehensive height gradient, height mean and height gradient mean, and the binary image of slag slices is established according to the properties of slag slices. The binary images of slag slices are eroded and dilated respectively, and the non-slag slice regions are filtered based on the morphological characteristics of slag slices. The morphological features between the filtered connected domains are obtained, the blocked slag slices are filtered, and the segmented images of the unblocked surface slag slices are obtained. As that slag slice distribution spatial information obtain by the laser three-dimensional camera can avoid the influence of the uneven illumination on the image segmentation result, the slag slice image segmentation is realize by judging the slag slice shielding area based on the spatial height information, the slag slices shielded are eliminated, and the surface slag slices segmentation and the statistical accuracy of feature extraction are improved.
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Description

technical field

[0001] The invention relates to the technical field of tunnel excavation equipment construction, in particular to a method for segmenting slag slice images based on a laser three-dimensional camera, which is used for segmentation and feature extraction of slag slice information generated during the excavation process of a hard rock TBM. Background technique

[0002] Hard rock tunnel boring machine (hereinafter referred to as hard rock TBM) is a large-scale high-tech construction equipment specially used for excavating rock tunnels and underground passages. The slag slice is the product of the direct action of the cutter head cutting the rock, so it contains a lot of rock mass information. The Chinese patent application with application number CN201621061653.1 proposes a slag film shooting device, but does not introduce how to extract information from the obtained slag film. The Chinese patent application with the application number CN201710222227.4 proposes ...

Examples

Embodiment Construction

[0029] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0030] A method for image segmentation of slag slices based on a laser three-dimensional camera, the steps of which are as follows:

[0031] Step 1: Use the laser three-dimensional camera slag film shooting device to obtain the image of the slag flakes conveyed on the belt conveyor.

[0032] Such as figure 1 As shown, the laser three-dimensional camera slag film shooting device includes a laser three-dimensional camera 4 and a shooting support 2, the shooting...