Re: Creating a test image

In article <fq9k11$ob4$1@xxxxxxxxxxxxxxxxxx>,
Abin Mathew <abinmmj@xxxxxxxxx> wrote:

I need to create an image of 100*100 pixels in size with a
circle of radius 50 pixels centered on the image. The gray
scale values inside the circle should be 50 and the rest
100. Thanks

inside = 50;
outside = 100;
width = 100;
height = 100;
radius = 50;
cx = 50;
cy = 50;
[x,y] = meshgrid(1:width,1:height);
circ = repmat(outside, width, height);
circ((x - cx).^2 + (y - cy).^2 <= radius.^2) = inside;

(I might have reversed width and height in the meshgrid statement.)


--
"No sincere artist was ever completely satisfied with his labour."
-- Walter J. Phillips
.

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