How can I generate data points form arbitrary shape in 2D in MATLAB ?
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Dear All, I would like to ask: How can I generate data points form arbitrary shape in 2D in MATLAB ?
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답변 (3개)
Image Analyst
2016년 12월 1일
How about rand()?
numberOfVertices = 15;
x = rand(1, numberOfVertices);
y = rand(1, numberOfVertices);
If you want an image, use
binaryImage = poly2mask(x, y, rows, columns);
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Image Analyst
2016년 12월 1일
Not that I know of. Perhaps if you were able to read a font file. In the meantime, here's some code that will create a heart shape:
t = linspace(-pi,pi, 350);
X = t .* sin(pi * .872*sin(t)./t);
Y = -abs(t) .* cos(pi * sin(t)./t);
plot(X,Y);
fill(X, Y, 'r');
axis square;
set(gcf, 'Position', get(0,'Screensize'));
title('Happy Valentines Day', 'FontSize', 28);
There is also code to create a Batman logo: http://www.mathworks.com/matlabcentral/answers/13131-batman-equation-in-matlab#answer_17935 But nothing for a letter B I'm afraid. Sorry.
Image Analyst
2016년 12월 1일
Do you want the boundary points of a binary image shape? If so, use bwboundaries().
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Image Analyst
2017년 1월 14일
And where do you think those real data points will come from if you don't have them already? Apparently you didn't think they can come from images of shapes as I suggested. So exactly where are you going to get those boundary points?
Walter Roberson
2017년 1월 14일
Daya tables for one of the famous vector fonts is given at http://paulbourke.net/dataformats/hershey/
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