How can we extract objects from a greyscale image?

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Nihar Rupareliya
Nihar Rupareliya 2019-8-8
评论： Walter Roberson 2019-8-8
So, i got a grayscale image of a box, which contains some objects.. I need to identify if/ not the box is empty or not....
I tried using the otsu thresholding, but doesn't work properly. is it possible to convert all the other parts to black except the image of interest?
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Nihar Rupareliya
Nihar Rupareliya 2019-8-8
This is the image of bucket which is full. the spatula, etc are the part of interest.
Walter Roberson
Walter Roberson 2019-8-8
I would recommend background subtraction, if you can get a picture of the empty bucket, especially if everything is taken from a fixed viewpoint (if the viewpoint is not fixed then you might need to do image registration before doing the subtraction.)

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回答（1 个）

darova
darova 2019-8-8
What about bwareaopen()
I = imread('example_filled2.jpg');
I1 = I < 40;
I2 = bwareaopen(I1,3e3);
imshow(I2)
What i've got
img22.png

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