Region of a tracking object in a Image

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Adem Kikaj
Adem Kikaj 2015-3-11
评论： Image Analyst 2015-3-12
Hi everyone, i wanted to ask if I have a photo like this can I somehow find the white area now if I preliminarily find the red 'horse' and to have a message like 'The red horse is in 1x1 square'.
Thanks!

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Image Analyst
Image Analyst 2015-3-11
Yes you can. To find the white squares, you don't even need to preliminarily find the red horse. You simply need to do
whiteSquares = rgbImage(:,:,1)>128;
See color segmentation demos in my file exchange: http://www.mathworks.com/matlabcentral/fileexchange/?term=authorid%3A31862
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Adem Kikaj
Adem Kikaj 2015-3-12
I have a static camera which makes photo like this:
From this image I want to detect squares one by one, and have an information which one is First(1,1), Second(1,2) and so on.
Then let's suppose I have this image after a sequence of images:
So now I have a redpoint in First(1,1), and how to detect and save this information, also I want to know that's a red circle in position (1,1) and then I extract in a Excel workbook.
P.s is a individual Project, and camera will be static and makes static photos.
Image Analyst
Image Analyst 2015-3-12
Get the blue channel
blueChannel = rgbImage(:,:,3);
See if it has a low value, meaning it's red, or a high value, meaning the square is white
for k = 1 : length(row)
if blueChannel(row(k), column(k)) < 128
% Low blue signal so there must be the red disc on it.
redChips(k) = true;
else
% High blue signal so the square must be white.
redChips(k) = false;
end
end

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