Putting two circles on the same image

Question

Mert Aygün 2018-5-20

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https://ww2.mathworks.cn/matlabcentral/answers/401623-putting-two-circles-on-the-same-image

评论： Ameer Hamza 2018-5-20

I am trying to obtain a car figure with using two circles and one rectangle image. Firstly, I need to create the circles. How can I put two circles in the same image with the code below? Thanks in advance.

function [outimg, outimg1] = CircleIm(radius)
SizeX = 256;
SizeY = 256;
[C, R] = meshgrid(1:SizeX, 1:SizeY);
centerX = 64;
centerY = 64;
centerX1 = 192;
centerY1 = 192;
circle = (R - centerY).^2 + (C - centerX).^2 <= radius.^2;
circle1 = (R - centerY1).^2 + (C - centerX1).^2 <= radius.^2;
outimg=image(circle);
hold on;
outimg1=image(circle1);
colormap([0 0 0.4; 1 1 1]);
end

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Answer 1

Ameer Hamza 2018-5-20

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https://ww2.mathworks.cn/matlabcentral/answers/401623-putting-two-circles-on-the-same-image#answer_321023

编辑：Ameer Hamza 2018-5-20

在 MATLAB Online 中打开

Try the following

function [outimg] = CircleIm(radius)
SizeX = 256;
SizeY = 256;
[C, R] = meshgrid(1:SizeX, 1:SizeY);
centerX = 64;
centerY = 64;
centerX1 = 192;
centerY1 = 192;
circle = (R - centerY).^2 + (C - centerX).^2 <= radius.^2;
circle1 = (R - centerY1).^2 + (C - centerX1).^2 <= radius.^2;
circles = circle|circle1;
outimg=image(circle|circle1);
colormap([0 0 0.4; 1 1 1]);
end

your method of hold on will make draw the new image on top of the last image. You need to or both images together to retain both circles. The following are drawn with a radius of 20.

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