Glossary of Morphology

Glossary of Morphology

Image Dilation/ Filling/ Erosion/ ExtractionFrom the filtered images, we notice that all the lines are not connected and not quite clear. We come up with the idea that if we can dilate the region, fill the inner area and erode the area again. We could possibly obtain much better image with the region of the finger that we are interest. We use ‘imdilate’ and ‘imerode’ with morphological structuring element of ‘disk’ which is similar to round figure of the fingers. Finally, we extract the small region and keep the largest one representing finger using ‘bwareaopen’ with some threshold of the passing minimum area of pixels. Here are the results from each step:Image Dilation
Image Filling

Image Erosion

Image Extraction