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# Documentation for `example_code.py`
## `remove_dirt(image)`
This function removes small dirt and noise from a binary image by closing small holes and removing small objects.
Here is an example of how to use the function:
```
import skimage.morphology as morphology
from skimage import data
# Load a binary image
image = data.coins() > 100
# Remove dirt from the image
cleaned_image = remove_dirt(image)
```
## `center_of_mass(X)`
This function calculates the center of mass of a 2D shape defined by a set of points.
Here is an example of how to use the function:
```
import numpy as np
# Define a set of points that define a shape
X = np.array([[0, 0], [0, 1], [1, 1], [1, 0]])
# Calculate the center of mass of the shape
center_of_mass = center_of_mass(X)
# Print the center of mass
print(center_of_mass)
```
The output will be `[0.5, 0.5]`, which is the coordinates of the center of the square defined by the points `X`.
## `center_of_mass(X)`
This function calculates the center of mass of a 2D shape defined by a set of points.
Here is an example of how to use the function:
```
import numpy as np
# Define a set of points that define a shape
X = np.array([[0, 0], [0, 1], [1, 1], [1, 0]])
# Calculate the center of mass of the shape
center_of_mass = center_of_mass(X)
# Print the center of mass
print(center_of_mass)
```
The output will be `[0.5, 0.5]`, which is the coordinates of the center of the square defined by the points `X`.

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def remove_dirt(image):
image = morphology.area_closing(image, area_threshold=250, connectivity=1)
# image = morphology.opening(image, morphology.square(5))
return image
def calculate_area(countour):
c = np.expand_dims(countour.astype(np.float32), 1)
c = cv.UMat(c)
return cv.contourArea(c)
def center_of_mass(X):
x = X[:,0]
y = X[:,1]
g = (x[:-1]*y[1:] - x[1:]*y[:-1])
A = 0.5*g.sum()
cx = ((x[:-1] + x[1:])*g).sum()
cy = ((y[:-1] + y[1:])*g).sum()
return 1./(6*A)*np.array([cx,cy])
img = remove_dirt(thresh_gray)
def rg_ratio_normalize(imgarr):
# set max & min to most extreme values,
# work up & down respectively from there
tmin = MAX_TEMP
tmax = 0
imgnew = imgarr
for i in range(len(imgarr)):
for j in range(len(imgarr[i])):
px = imgarr[i][j]
r_norm = normalization_func(px[0])
g_norm = normalization_func(px[1])
# apply camera calibration func
temp_C = pyrometry_calibration_formula(g_norm, r_norm)
# remove pixels outside calibration range
if MAX_TEMP != None and temp_C > MAX_TEMP or MIN_TEMP != None and temp_C < MIN_TEMP:
temp_C = 0
# update min & max
if temp_C < tmin and temp_C >= 0:
tmin = temp_C
if temp_C > tmax:
tmax = temp_C
imgnew[i][j] = [temp_C, temp_C, temp_C]
return imgnew, tmin, tmax
def pyrometry_calibration_formula(i_ng, i_nr):
return 362.73 * math.log10(
(i_ng/i_nr) ** 3
) + 2186.7 * math.log10(
(i_ng/i_nr) ** 2
) + 4466.5 * math.log10(
(i_ng / i_nr)
) + 3753.5