产生随机分叶肺结节轮廓的想法 [英] Ideas for generating random lobulated pulmonary nodule contours

问题描述

我需要生成随机分叶轮廓，如下所示

关于如何做到这一点的任何想法或算法？
我将要使用的软件是matlab，但是如果您以其他语言发布解决方案，我也没有问题...

ps我只需要绘制一个类似于上面的随机轮廓...

解决方案

这样如何？

  degree = 5; 
 numPoints = 1000; 
 blobWidth = 5; 
 
 theta = 0：（2 * pi）/（numPoints-1）：2 * pi; 
 
 coeffs = rand（degree，1）; 
 rho = zeros（size（theta））; 
 for i = 1：degree 
 rho = rho + coeffs（i）* sin（i * theta）; 
 end 
 
 phase = rand * 2 * pi; 
 
 [x，y] = pol2cart（theta + phase，rho + blobWidth）; 
 plot（x，y）
轴等于
 set（gca，'Visible'，'off'）
  

您可以通过修改度来控制的抖动。我认为5给出了一些关于如你所举的例子那样宽大的摇摆乐。

这很有趣 - 希望它有帮助！

I need to generate random lobulated contours such as the following

Any ideas or algorithms on how to do this ?? The software I am going to use is matlab, however I have no problem if you post solutions in other languages too...

p.s I only need to plot a random contour that resembles the above...

解决方案

How about this?

degree = 5;
numPoints = 1000;
blobWidth = 5;    

theta = 0:(2*pi)/(numPoints-1):2*pi;

coeffs = rand(degree,1);
rho = zeros(size(theta));
for i = 1:degree
    rho = rho + coeffs(i)*sin(i*theta);
end

phase = rand*2*pi;

[x,y] = pol2cart(theta+phase, rho+blobWidth);
plot(x,y)
axis equal 
set(gca,'Visible','off')

You can control the wiggliness lobulacrity by modifying degree. I think 5 gives something about as wiggly lobulacious as your example.

That was fun - hope it helps!

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