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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 import math
from multiprocessing.sharedctypes import Value
import cv2 as cv import cv2 as cv
import numpy as np import numpy as np
from numba import jit from numba import jit
@ -33,8 +34,8 @@ def rg_ratio_normalize(
temp_C = pyrometry_calibration_formula(g_norm, r_norm, default=MIN_TEMP) temp_C = pyrometry_calibration_formula(g_norm, r_norm, default=MIN_TEMP)
# remove pixels outside calibration range # remove pixels outside calibration range
if (MAX_TEMP != None and temp_C > MAX_TEMP) or (MIN_TEMP != None and 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 temp_C = MIN_TEMP
# update min & max # update min & max
if temp_C < tmin and temp_C >= 0: if temp_C < tmin and temp_C >= 0:
@ -43,16 +44,13 @@ def rg_ratio_normalize(
tmax = temp_C tmax = temp_C
# min intensity = 0 # min intensity = 0
pix_i = temp_C - MIN_TEMP # pix_i = temp_C - MIN_TEMP
# temp_new = temp_C - MIN_TEMP temp_new = temp_C - MIN_TEMP
# pix_i = temp_new / MAX_TEMP * 255 pix_i = temp_new / MAX_TEMP * 255
imgnew[i][j] = [pix_i, pix_i, pix_i] imgnew[i][j] = [pix_i, pix_i, pix_i]
# imgnew[i][j] = [0, g_norm, r_norm]
return imgnew, tmin, tmax return imgnew, tmin, tmax
@ -64,9 +62,9 @@ def pyrometry_calibration_formula(i_ng, i_nr, default=24.0):
""" """
try: try:
return ( return (
362.73 * math.log10(i_ng/i_nr) ** 3 + (362.73 * math.log10(i_ng / i_nr) ** 3) +
2186.7 * math.log10(i_ng/i_nr) ** 2 + (2186.7 * math.log10(i_ng / i_nr) ** 2) +
4466.5 * math.log10(i_ng / i_nr) + (4466.5 * math.log10(i_ng / i_nr)) +
3753.5 3753.5
) )
except: except:
@ -109,6 +107,7 @@ def ratio_pyrometry_pipeline(
img = cv.filter2D(src=img, ddepth=-1, kernel=kernel) img = cv.filter2D(src=img, ddepth=-1, kernel=kernel)
# write colormapped image # write colormapped image
# img_jet = img
img_jet = cv.applyColorMap(img, cv.COLORMAP_JET) img_jet = cv.applyColorMap(img, cv.COLORMAP_JET)
# --- Generate temperature key --- # --- Generate temperature key ---