added sample weighting
Merge branch 'master' of github.com:ratatatata/ML-OSM
Merge branch 'master' of github.com:ratatatata/ML-OSM
Merge branch 'master' of github.com:ratatatata/ML-OSM
- work with dup.png
	- CHECK gen patches
	- CHECK extract test
	- CHECK gen visu

- CHECK rm intermediate tmp files
- CHECK predict 0 for no sift features
validation working