A skeleton extraction method of plant root branching characteristics

A technology for extracting plant roots and skeletons, applied in interdisciplinary fields, can solve problems such as easy errors at bifurcation points, and achieve the effect of eliminating influence

Active Publication Date: 2021-09-24
SOUTH CHINA AGRI UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This method has high requirements for the determination of the first skeleton point in the branch root, and when the transitional root section of the main root branch is long and has a helical structure, the location of the bifurcation point is prone to errors

Method used

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  • A skeleton extraction method of plant root branching characteristics
  • A skeleton extraction method of plant root branching characteristics
  • A skeleton extraction method of plant root branching characteristics

Examples

Experimental program
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Embodiment

[0055] In this embodiment, a method for extracting the skeleton of plant root branching features is a data processing process based on the above-mentioned image data after obtaining the tomographic sequence image data of the plant root system using tomographic imaging technology, combined below figure 1 , detailing each step of the process.

[0056] 1. Image acquisition;

[0057] The image used in this example is a sequence of images obtained by industrial XCT scanning of the root system. The image is a cross-sectional view of the root system in the form of a slice, and the imaging characteristics are related to the depth of the slice and the angle of the root and the X-ray. Select the appropriate slice depth and root placement angle, and then remove impurities such as soil matrix through the segmentation technology in image processing, and obtain the binarized CT sequence map of the root system.

[0058] 2. Image preprocessing;

[0059] Since the root outline sequence map ...

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Abstract

The invention discloses a method for extracting a skeleton of a branching feature of a plant root system, comprising the following steps: (1) acquiring an image: acquiring a CT sequence diagram of a cross-sectional tomographic sequence of a plant root system; (2) positioning the CT sequence diagram of a branched root segment : Using the remaining convex hull area detection technology, the CT contour of the root system is divided into the contour with branch and the contour without branch; (3) Region separation: the concave point detection and segmentation method is used to separate the contour with branch; ( 4) Main root bifurcation CT sequence map positioning: select the appropriate opening operation and roundness threshold to locate the main root bifurcation CT sequence map; (5) Skeleton extraction: use the CT contour centroid point at the beginning of the main root bifurcation, and not Three-dimensional curve interpolation fitting is carried out on the grain points of the CT sequence diagram of the sub-root segment containing branches, and a root system skeleton with better effect is obtained. The invention can automatically identify the bifurcation characteristics according to the CT sequence diagram of the root system, and perform interpolation fitting after region separation and positioning of the main root bifurcation characteristic section, greatly simplifying the operation.

Description

technical field [0001] The invention relates to the interdisciplinary technical field combining non-destructive testing and scientific computing visualization, and more specifically, relates to a rapid extraction technology of a three-dimensional body model skeleton based on the characteristics of CT sequence diagrams of plant root branching. Background technique [0002] The root system is an important organ of plants growing in the soil. In order to realize in-situ non-destructive detection of roots in the soil medium, X-ray-based tomographic imaging technology can be used, and the three-dimensional root system surface or volume can be obtained through computer three-dimensional reconstruction technology. model for further 3D skeleton extraction. [0003] Skeleton model: It is called the fourth multimedia data type after sound, image and video. It is used for the description, retrieval, matching, marking, tracking, identification, compression, measurement of phenotypic pa...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06T7/11G06T7/136G06T7/181
CPCG06T2207/10081G06T2207/30101G06T2207/30188G06T7/11G06T7/136G06T7/181
Inventor 周学成王高峰陈富强杨自尚
Owner SOUTH CHINA AGRI UNIV
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