Incorrect image in bwconncomp function documentation

I was going through the section https://www.mathworks.com/help/images/ref/bwconncomp.html#bu2xeh0-1 in the function documentation. I see the largest component in the image has not been erased. Please help with this.

Answer 1

[DGM]

Yep. That looks like when they edited the example to include the new cc2bw() function, they changed the variable name, but didn't fix the call to imshow().

I submitted a note. At the bottom of docs pages, if you give it a feedback rating, it will pop up a text box that allows you to submit an explanation. For things like this that are easy to explain, that's the easy way to bring attention to docs issues.

[Patrick]

Hey thanks for the info. I have submitted a note from my side as well.

Answer 2

[Aneela]

Hi Patrick,

I have executed the code in the given documentation: https://www.mathworks.com/help/images/ref/bwconncomp.html#bu2xeh0-1

The largest component will be erased when you change the variable name:

BW2=cc2bw(CC,ObjectsToKeep=idx);
imshow(BW2);

This will erase “ff” from the original image.

[Patrick]

yeah, this works. Thank you.