Recognize some objects and delete other objects from image

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Samia Sanjari
Samia Sanjari 2016-2-10
评论： Samia Sanjari 2016-2-12
How can i isolate my green '+' selected objects from the other objects.I only want to plot the green objects and want to delete others object from my image.I need an idea to do that.

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回答（2 个）

Samia Sanjari
Samia Sanjari 2016-2-11
Hello Image analyst Do you have any idea how can i do that?I already selected my objects and marked them by green '+'.I only want to show these green selected objects in my image.
Thanks in advance
Image Analyst
Image Analyst 2016-2-11
Basically you need to find everything except squares. You can do that by adapting my attached shape recognition demo.
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Image Analyst
Image Analyst 2016-2-12
First find the green where the red and blue channel are low and the green value is high.
% Extract the individual red, green, and blue color channels.
redChannel = rgbImage(:, :, 1);
greenChannel = rgbImage(:, :, 2);
blueChannel = rgbImage(:, :, 3);
greenCrosses = greenChannel > t1 & redChannel < t2 & blueChannel < t3;
Next find white where all channels are high.
whiteBackground = greenChannel > t1 & redChannel > t1 & blueChannel > t1;
Then use imclearborder() to get rid of the surround.
shapesOnly = imclearborder(whiteBackground);
Then use imreconstruct with the white image and the green image to get only those shapes with green on them.
See if you can finish the code.

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