The supplementary materials contains a PDF document and a zipped file for the source code.

1. More algorithmic details and exerperimental results are given in the PDF file.

2. The compilation and usage of the source code are explained in the pdf file and the readme 
file in the source code folder.

3. The input images are in the data subfolder under the source code folder.


Na Lei and Xianfeng Gu
08/17/2021



