ImageSwipe is a command line tool that allows users to resize and compare two satellite or aerial images of a given scene. This can be used to show temporal changes, for example, land cover changes between two seasons or urban development from year to year. This can also be used to make qualitative comparisons between different band combinations e.g. a natural color image to a false-color infrared image. An example of the change detection capabilities of this tool can be seen in this article from NASA (click on "View Image Comparison"). This article uses the same jQuery plug-in as ImageSwipe, however, ImageSwipe was not used to create this visualization.
But, if you choose not to use
virtualenv, you can just install PIL:
pip install PIL
Usage: imageswipe.py [ARGUMENT] <path to first image> <path to second image> Required Argument: -r, --resize Specify an image width. -o, --original Keep original image size. Optional Argument: -h, --help Display usage information. NOTE: Images must be the same size.