I am curious because I was thinking that a timeline map would give a visual effect of the huge destruction and hard times the Londoners had to go through...so I googled for it and found the following:
- a nice research blog which uses the Blitz Bomb Census from The National Archives
- a blog entry from the Guardian about the first day - and data - of the Blitz over London.
Here the source of info is the London Metropolitan Archives
Anyway I experimented with the little map from the first blog and wrote a little program using SimpleCV.
This is were I started from:
The code is quite simple and the parameters could be changed to get higher accuracy.
blz = Image("./sampleimages/the_blitz.png")
img = blz.copy()
dist = img.colorDistance(SimpleCV.Color.WHITE)
segmented = dist.stretch(240, 255)
blobs = segmented.findBlobs()
circles = blobs.filter([b.isCircle(0.6) for b in blobs])
for c in circles: