How can I get good results from the detection of matching/shape of reason for this image?

I need to be able to identify all nine squares in the first image (0000094718...) and others like him.  I tried to detect shape, filtering and geometric pattern match.  I tried to vary all parameters within these functions.  I tried the image preprocessing (and the model, if any: usually created from only one of the boxes) with thresholding and/or a muliplier before using the detection or the corresponding function and I still can not get all nine boxes and only these nine boxes.

Can someone offer some help?  Ideally I would be able to use the shape detection, because it returns the coordinates of the corner rectangles and those who are particularly useful to me.  What confuses me about this feature, is that after setting the width/height minimum/maximum of rectangles to find, the program seems to ignore these instructions and returns matches outside these limits.

It would be even better to be able to have a script which will identify all nine boxes in two attached images.  The boxes in the second image (X820A32) are more square.

Thank you

Holly

Try the attached script.  I think that you use only may not be the optimal threshold values.  You may find that you want to use a smoothing filter before making the threshold.  This should also help with nuisance particles.

Tags: NI Software

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