def total_count(self):
"""Returns the number of grains detected.
Raises:
ContoursError
"""
# check runtime order
if self.contours is None:
raise errors.ContoursError("self.contours has not yet been set.\nRun Grains().set_contours() to do so.")
return len(self.contours)
def set_moments(self):
"""Extracts moments from OpenCV contours.
Raises:
ContoursError
"""
# check runtime order
if self.contours is None:
raise errors.ContoursError("self.contours has not yet been set.\nRun Grains().set_contours() to do so.")
# collect all moments
moments = []
for c in self.contours:
m = cv2.moments(c)
moments.append(m)
self.moments = moments
def areas(self):
"""Returns the area of each detected grain in square micrometers.
Raises:
ContoursError
"""
# check runtime order
if self.contours is None:
raise errors.ContoursError("self.contours has not yet been set.\nRun Grains().set_contours to do so.")
# collect all areas
areas = []
for c in self.contours:
pix_area = cv2.contourArea(c)
microns_area = self._pix_area_to_microns_area(pix_area)
areas.append(microns_area)
return areas