MATLAB: How do i calculte Threshold size

Image Processing Toolboxthreshold size image processing roi blob

Hi, im doing some road sign detection with matlab and one of the step i need to do is to detect the blob by threshold size? What does that mean? Im working right now in HSV. How can i tell my program to detect ROI (Blob) with Threshold size? Thanx!

Best Answer

It just means how strictly are you going to qualify your blob. Are you going to say this maybe is it, or no, it has to be perfect else i am not considering it.

The following link should help you set your thresholds: http://www.mathworks.com/help/vision/ref/detectsurffeatures.html

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