Using bwlabel() with a structuring element

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Mauricio Ramirez 2014-12-10

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评论： Mohammad Abouali 2014-12-12

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Hello I would like to try and use bwlabel() with a specific structuring element, is this possible?

se = strel('arbitrary',[1 1 1 1; 1 1 1 1; 1 1 1 1]);

Something like this one?

I'm making a detection algorithm and I am encountering a lot of false detection's, hopefully something like this se will reduce the number of false detections due to the fact that bwlabel() standard connectivity is of 8.

Can anyone suggest any other ideas.

Ive already used bwareaopen() imdialte() imerode()

I would also like to set bwlabel() to avoid labeling any connectivity of and anything below this matrix of 3x3 ones.

[1 1 1; 1 1 1; 1 1 1]

Is this possible?

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Sean de Wolski 2014-12-10

Can you show an image? It sounds like you might want to do some morphological operations on it first, before the labeling.

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Image Analyst 2014-12-10

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编辑：Image Analyst 2014-12-10

That doesn't make sense. Labeling doesn't use a structuring element. The only choice you have is on the connectivity. You can choose 4 or 8. Perhaps you were thinking of changing the structuring element on some morphological operation instead of on the labeling operation.

You will get more blobs with 4 connectivity than with 8 since with 4 blobs that touch on a corner will be separate blobs with 4 connectivity but the same blob with 8 connectivity. It's best if you show an image if you want image processing advice.

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Mauricio Ramirez 2014-12-10

false_detection.fig

Please see the file attached, the lorry (truck) has been detected multiple times, this is what I am looking to fix.

Image Analyst 2014-12-10

The computer vision toolbox has a car tracking capability. Try that. Otherwise it's such a major job that I can't really build an app for you, or even give advice since tracking / surveillance is not my specialty. Sorry.

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