Plane figure independent closed area recognition method
A closed-area, flat-figure technology, applied in special data processing applications, instruments, electrical digital data processing, etc., can solve problems such as inapplicability, and achieve the effects of good practicability, wide applicability, and high reliability
Active Publication Date: 2018-01-30
ZHENJIANG HENGCHANG PLASTIC COLOR ARTS CO LTD
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[0003] The application number is 201310034839.2, the patent name is the method of extracting the smallest closed figure, which discloses a method for quickly extracting the smallest closed figure in a figure composed of several straight line segments. Its recognition accuracy and efficiency are very high, but it is not suitable for Complex planar graphics with a large number of curved segments
[0004] It can be seen that the existing identification method of the smallest independent closed area has defects, and the cumbersome pre-processing of FEA needs to be automated as soon as possible, so it is urgent to explore a method for quickly identifying independent closed areas in complex planar graphics
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[0070] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments, but the protection scope of the present invention is not limited thereto.
[0071] Utilizing the method for identifying the independent closed area of the planar figure of the present invention, the present invention is mainly applied in the finite element analysis method for quickly obtaining the independent closed area, which is convenient for later calculation and analysis. Below to figure 2 The plane figure is an embodiment, and its flow chart is as figure 1 As shown, the details are as follows:
[0072] S1: Establish a curve data information set M, the curve data information set M includes a curve set S and an angle set D; the specific steps are as follows:
[0073] S1.1: Extract the curve segment data of the plane graph in the curve data information set M, which is recorded as the curve segment set S; figure 2 The set of curve segmen...
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The invention provides a plane figure independent closed area recognition method. The method comprises the steps that a curve data information set M is established, wherein the curve data informationset M comprises a curve set S and an angle set D; all planar closed areas are identified from the curve set S, and are placed in a curve set A; the curve set A and the angle set D are screened to acquire an independent closed area set B; and the independent closed area set B is saved as the final result. According to the invention, the minimum independent closed figure in closed figures can be accurately identified, and the reliability is high.
Description
technical field [0001] The invention relates to the technical field of graphics processing, in particular to a method for identifying independent closed areas of plane graphics. Background technique [0002] When developing the FEA (Finite Element Analysis) pre-processing platform, in view of the strict requirements put forward by users, it is necessary to divide specific density and size grids for different areas of a certain part or part, so it is necessary to identify its independent closed areas, and then analyze each Separate closed areas are meshed separately. The general FEA pre-processing platform does not have the function of independent closed area identification, which needs to be processed manually, which is time-consuming and labor-intensive, and the efficiency is extremely low. Therefore, it is urgent to invent a method for identifying independent closed areas of plane figures. [0003] The application number is 201310034839.2, and the patent name is the meth...
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IPC IPC(8): G06T11/20G06F17/50
Inventor 李凯强王国林李东明刘从臻杨建
Owner ZHENJIANG HENGCHANG PLASTIC COLOR ARTS CO LTD