Summary: The GSIV tilemaker.py script dies when attempting to create a large (16384x16384) blank PIL Image object, simply saying “Killed”. The only solution I’ve found is to resize the image to below 8192x8192 before running the script.
Problem: I’m trying to use the Giant Scalable Image Viewer (GSIV) to make a Google Maps-like browser for a topographical map. The tilemaker.py script dies, outputting:
original size: (11096, 11721)
KilledSolution:I resized the topo to a width of 8192 in GraphicConverter, though any image editing software should work.
Discussion: GSIV tilemaker.py uses the Python Imaging Library to split and resize the image that will be viewed. During execution, the script attempts to create a new Image object that is sized to a power of two large enough to fit the original image, followed by paste-ing in the original graphic.
In this case, the original image is quite large (11096x11721). The image that it tries to create is therefore 16384x16384, which causes the script to end abruptly, saying only “Killed”. This probably indicates that the script was consuming too much memory, and was forcebly killed by the Python interpreter.
I don’t know very much about Python, so I decided to resize the image canvas manually, then hack the script to not try. Unfortunately, GraphicConverter was unable to resize up to 16384x16384, giving the error message
System error "Size Check failed (-116)" occurred in documentInstead, I was forced to resize the image down to a width of 8192, whereupon the tilemaker.py script was able to run without a problem.
You can see the result of my efforts here.