Object contour line extraction method and system
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 improving detail accuracy and simplifying subsequent operation processes.
Active Publication Date: 2021-08-24
CHENGDU RAINPOO TECH CO LTD
View PDF11 Cites 1 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 object contours provided by an embodiment of the present invention, the method for extracting object contours can be applied to Figure 7 In an object contour extraction system, further, the object contour extraction method may specifically include the content described in the following steps S1-S5.
[0067] A method for extracting object contour lines, comprising:
[0068] S1: Obtain 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 growing point;
[0071] S4: Select the feature points excluding the growth points within the first preset range of the growth points as the points to be selected;
[0072] S5: Select a new growth point from the candidate points according to the growth direction of the growth point; use the new growth point as a growth point for the next selectio...
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 an object contour line extraction method. The method comprises the steps of obtaining a surface model of an object; acquiring feature points on the surface model; selecting at least one feature point from the feature points as a growing point; selecting the feature points not including the growing points in the first preset range of the growing points as to-be-selected points; selecting new growing points from the to-be-selected points according to the growing directions of the growing points; taking the new growing point as a growing point to select a new growing point for the next time; and generating an object contour line according to all the growing points. The invention also discloses an object contour line extraction system. According to the object contour line extraction method and system, the object contour line can be generated after data processing is carried out on the assigned feature points, and compared with the prior art, due to the fact that the growth direction of the feature points has basic reference, the subsequent operation process is greatly simplified, and the detail precision of the contour line 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 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