Each image would have different dimensions hence manually changing would be tough so write a script to extract the dimensions from the image( basically from the xml file). Edit the read_image script and make a PR
There is a certain Latitude and certain Longitude when a small snippet of the image is cute from the main image. So the task will be to show that latlong on the sides of the image visualisation.
The First step would be to read the data. The data is available on https://pradan.issdc.gov.in/, you would have to make an account to extract the dataset. Select Chandrayaan 2 and go to browse and download, followed by going to OHRC(Optical High Resolution Camera) and download the 128 bit data. First read about the OHRC User guide and then proceed.