Method and system for extracting object contour
An extraction method and contour line technology, which are applied in the field of object contour line extraction methods and systems, can solve the problems of complex parameter setting, high time cost, weak feature extraction capability, etc., and achieve the effect of simplifying the subsequent operation process and improving the detail accuracy.
Active Publication Date: 2021-09-21
CHENGDU RAINPOO TECH CO LTD
View PDF11 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0003] In the existing technology, the extraction of contour lines is generally based on the geometric relationship between feature points, such as projection, curvature, PCA, viewing angle extraction, etc., which generally have defects such as high time cost, complicated parameter setting, and weak feature extraction ability.
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment
[0066] Please refer to figure 1 , is a schematic flowchart of a method for extracting an object outline provided by an embodiment of the present invention, and the method for extracting an object outline can be applied to Figure 7 An object contour line extraction system in , further, the object contour line extraction method may specifically include the content described in the following steps S1-S5.
[0067] An object contour extraction method, comprising:
[0068] S1: Get the surface model of the object;
[0069] S2: obtain feature points on the surface model;
[0070] S3: Select at least one feature point from the feature points as a growth point;
[0071] S4: Select the feature points that do not include the growth point within the first preset range of the growth point as the point to be selected;
[0072] S5: select a new growth point from the to-be-selected points according to the growth direction of the growth point; use the new growth point as a growth point to ...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention discloses a method for extracting the contour line of an object, comprising: acquiring a surface model of the object; acquiring feature points on the surface model; selecting at least one feature point from the feature points as a growing point; selecting the growing point within a first preset range The feature points that do not include the growth points are used as the candidate points; according to the growth direction of the growth points, a new growth point is selected from the candidate points; the new growth point is used as the growth point to select the next new growth point; according to all the growth points Generate object outlines. The invention also discloses an object outline extraction system. The object contour extraction method and system of the present invention can generate the object contour line after data processing through the assigned feature points. Compared with the prior art, since the growth direction of the feature points has a basic reference , so the subsequent calculation process is greatly simplified, and the accuracy of the contour details is greatly improved.
Description
technical field [0001] The invention relates to contour line extraction technology, in particular to a method and system for object contour line extraction. Background technique [0002] The contour line extraction technology based on 3D model has been widely used in many fields such as geometry processing, reverse engineering, aerial photography route planning and computer visualization. [0003] In the existing technology, the extraction of contour lines is generally based on the geometric relationship between feature points, such as projection, curvature, PCA, viewing angle extraction, etc., which generally have defects such as high time cost, complicated parameter setting, and weak feature extraction ability. Contents of the invention [0004] The technical problem to be solved by the embodiments of the present invention is that there are many defects in the existing contour line extraction technology, and the purpose is to provide a method and system for object contou...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Patents(China)
IPC IPC(8): G06T7/13G06T17/20
CPCG06T17/20G06T7/12G06T7/66G06T5/20G06T2200/04G06T5/70
Inventor 程登桀胡东李小龙李润徐芳龙
Owner CHENGDU RAINPOO TECH CO LTD