https://github.com/ouczxd/CASPRS contains two versions of CASPRS: 1.3 and 2.1, now.
(1) The CASPRS 1.3 and the sample data of Haiyang Beach is stored in the directory of "Haiyang". See details in the paper "Using a transect-focused approach to interpret satellite images and analyze shoreline evolution in Haiyang Beach, China"(the file "Haiyang Beach.pdf") published by Marine Geology in 2021.
(2) The CASPRS 2.1 and the sample data of Fenghe River mouth is stored in the directory of "Fenghe". See details in the paper "Using free satellite imagery to study the long-term evolution of intertidal bar systems"(the file "Fenghe.pdf"), which is published by Coastal Engineering in 2022. 
(3) The satellite images can be downloaded from Google Earth Engine (https://earthengine.google.com/) using the program: "GEEdownloader 2.0".
(4) The "ImageConverter 2.0.py" is used to convert 16 bits images to 8 bits images, and the program also stretch the images according to the frequency of image intensity.