Stochastic pattern wetland pattern generating method based on fractal generator
A pattern generation and generator technology, applied in 2D image generation, instruments, image data processing, etc., can solve problems such as time-consuming and labor-intensive, and achieve the effect of good flexibility and controllability
Active Publication Date: 2015-03-04
CHINA UNIV OF GEOSCIENCES (WUHAN)
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Nowadays, the filling of such symbols is mostly drawn manually, which is time-consuming and labor-intensive
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[0034] The present invention will be further described below in conjunction with drawings and embodiments.
[0035]The present invention provides a method for generating a random marsh pattern pattern based on a fractal generator. The fractal generator is used to obtain a horizontal line segment determined by the starting position coordinates and the length of the line segment, and more than two horizontal line segments form a vertical horizontal line band pattern. , drawing more than two groups of longitudinal horizontal line segment strip patterns, thereby forming a swamp pattern; wherein, the type generator adopts an iterative function system random iteration algorithm.
[0036] Such as figure 1 Shown is a flow chart of the present invention.
[0037] The following is a set of generation examples of strip line drawing, combined with figure 2 , the specific process is as follows:
[0038] (1) Enter the X-axis spacing m_X_Grap, line length m_Line_Length, position randomne...
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The invention provides a stochastic pattern wetland pattern generating method based on a fractal generator. Transverse line segments with the determined initial position coordinates and the line segment length are obtained through the fractal generator, a longitudinal transverse line segment strip-shaped pattern is formed by two or more transverse line segments, two or more sets of longitudinal transverse line segment strip-shaped patterns are drawn, and therefore a wetland pattern is formed; the fractal generator iterates the algorithm through an iterated function system at random. According to the stochastic pattern wetland ground area symbol generating method, the fractal theory and the stochastic iteration function are utilized, the characteristics of the stochastic pattern map symbol are combined, the stochastic pattern wetland pattern generating method has good flexibility and controllability, the high-quality geographic and geological stochastic pattern wetland area symbol can be automatically generated, and the stochastic pattern wetland pattern generating method is applied to the filling of a digital map.
Description
technical field [0001] The invention belongs to the field of digital map drawing, in particular to a method for generating random swamp patterns based on a fractal generator. Background technique [0002] In digital map drawing, the automatic generation and drawing of random surface symbols is a difficult problem. At present, there is no mature solution for the generation of random swamp pattern patterns. This kind of random surface symbol has the characteristics of random change of pattern and random change of boundary, and its generation algorithm is controlled by conditions such as its own pattern shape characteristics and national standards. [0003] There have been some advances in the application of fractal geometry theory to cartography. For example, as early as 2001, Wu Hehai of Wuhan University gave the fractal description of map information, and Long Yi et al. proposed the local fractal description of map targets in 2006. In 2009, Fan Shuo et al. applied the frac...
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IPC IPC(8): G06T11/00
Inventor 刘刚陈麒玉聂意新刘彬彬王文清张桂林李新川何珍文
Owner CHINA UNIV OF GEOSCIENCES (WUHAN)