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Add normalization choice

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This commit is contained in:
Florent Guiotte 2018-09-12 21:57:21 +02:00
parent bbec5fbb95
commit 7ec65323d9
1 changed files with 11 additions and 10 deletions
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21
python/triskele/Triskele.py
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@ -15,7 +15,7 @@ import numpy as np
from .CreaTIFF import read, write
class Triskele:
def __init__(self, raster, dtype=np.uint8, cache_dir='/tmp', verbose=True):
def __init__(self, raster, dtype=np.uint8, normalize_to_dtype=True, cache_dir='/tmp', verbose=True):
self.verbose = verbose
self.triskele_bin = Path(os.path.dirname(os.path.realpath(__file__))\
@ -35,7 +35,7 @@ class Triskele:
self.sdfile = self.cache_dir.joinpath('sdfile.txt')
self.moifile = self.cache_dir.joinpath('moifile.txt')
self._write_infile(raster, dtype)
self._write_infile(raster, dtype, normalize_to_dtype)
def filter(self, tree='max-tree', area=None, standard_deviation=None, moment_of_inertia=None, feature='weight'):
self._setup(tree, area, standard_deviation, moment_of_inertia, feature)
@ -45,20 +45,21 @@ class Triskele:
def _read_outfile(self):
return read(self.outfile)
def _write_infile(self, rasters, dtype):
def _write_infile(self, rasters, dtype, normalize_to_dtype):
## Expand if rasters is 2D
if len(rasters.shape) < 3:
rasters = np.expand_dims(rasters, 2)
## Scale to new dtype
rep = np.iinfo(dtype)
if normalize_to_dtype:
## Scale to new dtype
rep = np.iinfo(dtype)
rasters = rasters.astype(np.float64)
rasters = rasters.astype(np.float64)
## Channel independant scale
for i in range(rasters.shape[2]):
rasters[:,:,i] -= rasters[:,:,i].min() - rep.min
rasters[:,:,i] *= (rep.max - rep.min) / (rasters[:,:,i].max() - rasters[:,:,i].min())
## Channel independant scale
for i in range(rasters.shape[2]):
rasters[:,:,i] -= rasters[:,:,i].min() - rep.min
rasters[:,:,i] *= (rep.max - rep.min) / (rasters[:,:,i].max() - rasters[:,:,i].min())
rasters = rasters.astype(dtype)
write(self.infile, rasters)