Properly quote to avoid AC_LANG_SOURCE error
Initial work on second gen spatial filter
Mk II filter image creation compiles and runs, alas still need to do coordinate shift and zero memory before run.
Add coordinate shift to sp filter mkII
Fix two silly mistakes in previous commit or two.
Alter colours to be easier to see
Add gaussian transform to sp mkII and hacks to test it.
Fix signedness bug in Gaussian make and apply.
Add Thresholding to Gaussian.
Reduce precision of Gaussian to reduce compute time.
Make functions names more consistent
First draft of connected components, I know it's not right but will work on it.
Second draft of connected components, still not working but much closer to what it is supposed to be.