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Added normalfunc calcs

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This commit is contained in:
Tom Selier 2023-09-29 15:14:24 +02:00
parent 28a1123bab
commit 6a2958a68b
1 changed files with 18 additions and 1 deletions
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17
src/helpers/statistics.py
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@ -1,4 +1,5 @@
import numpy as np import numpy as np
import math
def imgStats(img): def imgStats(img):
mean = np.zeros(3) mean = np.zeros(3)
@ -7,3 +8,19 @@ def imgStats(img):
mean[i] = np.mean(img[:, :, i]) mean[i] = np.mean(img[:, :, i])
std[i] = np.std(img[:, :, i]) std[i] = np.std(img[:, :, i])
return mean, std return mean, std
def calcNormalFunc(mean, sd, len):
f = np.zeros(len, dtype=np.longdouble)
# calculate PDF
for x in range(len):
exp = (-(x - mean) ** 2)/(2 * sd ** 2)
f[x] = 1 / math.sqrt(2 * np.pi * sd** 20 ) * (math.exp(exp))
# normalize PDF
max = np.amax(f)
min = np.amin(f)
for x in range(len):
f[x] = (f[x] - min) / (max - min)
return f