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Convert input image to binary

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Emily Boylan
Emily Boylan 2018-10-18
编辑： Emily Boylan 2018-10-19
How would I manually convert an image to binary by setting all values less than 100 equal to 1 and all else equal to 0?

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Image Analyst
Image Analyst 2018-10-18
Try this
[rows, columns, numColorChannels] = size(a);
if numColorChannels > 1
% Convert color image to grayscale.
a = rgb2gray(a);
end
binaryImage = a < 100;
imshow(binaryImage);
If you need more help, attach circlesBrightDark.png.

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