51 lines
1.5 KiB
Python
Executable File
51 lines
1.5 KiB
Python
Executable File
#!/usr/bin/env python
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# -*- coding: utf-8 -*-
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"""Iterates over a bunch of .jpg or .cr2 files and matches
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DateTimeOriginal from Exif tag to DateTime in a csv log
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of a GeigerMuellerCounter."""
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from datetime import datetime
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from PIL import Image
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import math
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import piexif
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import piexif.helper
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# Constants
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# 320 series: 0.0065 µSv/h / CPM
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SIFACTOR = 0.0065
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# Temp constants
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RAD = "0,15"
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# Import GeigerCounter data
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with open("testdata/TKRZ.hisdb.his", "r") as f:
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for line in f:
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if line[0] != '#':
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columns = line.split(',')
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csvrawtime = columns[1].lstrip()
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csvrawcpm = columns[2].lstrip()
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csvrawrad = round(float(csvrawcpm) * SIFACTOR, 2)
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csvisotime = datetime.fromisoformat(csvrawtime)
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# Print with 2 digits after dot and unit of measurement
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print(csvisotime, csvrawrad, "µS/h")
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# Load Image and EXIF data
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im = Image.open("testdata/test.jpg")
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exif_dict = piexif.load(im.info["exif"])
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picrawtime = exif_dict["Exif"][piexif.ExifIFD.DateTimeOriginal].decode('ASCII')
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picisotime = datetime.strptime(picrawtime, "%Y:%m:%d %H:%M:%S")
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print(picisotime)
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# convert str to exif compatible string
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new_comment = "Radiation ☢ " + RAD + " µS/h"
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user_comment = piexif.helper.UserComment.dump(new_comment, encoding="unicode")
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exif_dict["Exif"][piexif.ExifIFD.UserComment] = user_comment
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# compile and write tags
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print("Going to write comment: " + new_comment)
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exif_bytes = piexif.dump(exif_dict)
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#im.save("test.jpg", exif=exif_bytes)
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