In OpenCV, how would I be able to extact all the blobs in image A that collide with the blobs/markers in image B? Is there an easy way? One way I can think of is to use Marker Controlled Watershed Segmentation. I haven't tried/done that before - do I need to label/categorise each marker in image b first? Is there a simpler (and more efficient way) to extract my 'intersection' blobs? Ie, is there an easier way to achieve the 3rd image?
Image A:
Image B:
My desired result is below:
