. 2020 Sep 25;2020:6908018. doi: 10.1155/2020/6908018
Copyright © 2020 Sunyong Seo and Jinho Park.
This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Figure 3.
(a) Filtered and (b) contrast stretched filtered.