kopia lustrzana https://github.com/OpenDroneMap/ODM
46 wiersze
1.7 KiB
Python
46 wiersze
1.7 KiB
Python
from opendm import log
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import cv2
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def resize_to_match(image, match_photo = None):
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"""
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Resize images to match the dimension of another photo
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:param image numpy array containing image data to resize
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:param match_photo ODM_Photo whose dimensions should be used for resize
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:return numpy array with resized image data
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"""
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if match_photo is not None:
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h, w, _ = image.shape
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if w != match_photo.width or h != match_photo.height:
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image = cv2.resize(image, None,
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fx=match_photo.width/w,
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fy=match_photo.height/h,
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interpolation=cv2.INTER_LANCZOS4)
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return image
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def dn_to_temperature(photo, image):
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"""
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Convert Digital Number values to temperature (C) values
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:param photo ODM_Photo
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:param image numpy array containing image data
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:param resize_to_photo ODM_Photo that photo should be resized to (to match its dimensions)
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:return numpy array with temperature (C) image values
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"""
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image = image.astype("float32")
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# Handle thermal bands
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if photo.is_thermal():
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# Every camera stores thermal information differently
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# The following will work for MicaSense Altum cameras
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# but not necessarily for others
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if photo.camera_make == "MicaSense" and photo.camera_model == "Altum":
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image -= (273.15 * 100.0) # Convert Kelvin to Celsius
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image *= 0.01
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return image
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else:
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log.ODM_WARNING("Unsupported camera [%s %s], thermal band will have digital numbers." % (photo.camera_make, photo.camera_model))
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else:
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log.ODM_WARNING("Tried to radiometrically calibrate a non-thermal image with temperature values (%s)" % photo.filename)
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return image
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