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firelab-general
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scale colors to temp range

master
michael 2022-10-18 13:07:51 -07:00
parent 33413f2567
commit 8e51a01c58
1 changed files with 10 additions and 11 deletions
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21
ratio_pyrometry.py
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@ -1,4 +1,5 @@
import math
from multiprocessing.sharedctypes import Value
import cv2 as cv
import numpy as np
from numba import jit
@ -33,8 +34,8 @@ def rg_ratio_normalize(
temp_C = pyrometry_calibration_formula(g_norm, r_norm, default=MIN_TEMP)
# 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 = MIN_TEMP
if (MIN_TEMP != None and temp_C < MIN_TEMP) or (MAX_TEMP != None and temp_C > MAX_TEMP):
temp_C = MIN_TEMP
# update min & max
if temp_C < tmin and temp_C >= 0:
@ -43,16 +44,13 @@ def rg_ratio_normalize(
tmax = temp_C
# min intensity = 0
pix_i = temp_C - MIN_TEMP
# pix_i = temp_C - MIN_TEMP
# temp_new = temp_C - MIN_TEMP
# pix_i = temp_new / MAX_TEMP * 255
temp_new = temp_C - MIN_TEMP
pix_i = temp_new / MAX_TEMP * 255
imgnew[i][j] = [pix_i, pix_i, pix_i]
# imgnew[i][j] = [0, g_norm, r_norm]
return imgnew, tmin, tmax
@ -64,9 +62,9 @@ def pyrometry_calibration_formula(i_ng, i_nr, default=24.0):
"""
try:
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) +
(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
)
except:
@ -109,6 +107,7 @@ def ratio_pyrometry_pipeline(
img = cv.filter2D(src=img, ddepth=-1, kernel=kernel)
# write colormapped image
# img_jet = img
img_jet = cv.applyColorMap(img, cv.COLORMAP_JET)
# --- Generate temperature key ---