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[pull] master from OpenDroneMap:master #13

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merged 2 commits into from
Mar 27, 2020
Merged

[pull] master from OpenDroneMap:master #13

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544baba
Fixed radiometric-calibration bug
pierotofy Mar 27, 2020
72b150c
Merge pull request #1094 from pierotofy/numpyshapefix
pierotofy Mar 27, 2020
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Fixed radiometric-calibration bug
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@pierotofy
pierotofy committed Mar 27, 2020
commit 544baba9e4697e99336007e5671ba6fe232d542a
4 changes: 4 additions & 0 deletions opendm/multispectral.py
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Original file line number Diff line number Diff line change
Expand Up @@ -14,6 +14,8 @@ def dn_to_radiance(photo, image):
"""

image = image.astype("float32")
if len(image.shape) != 3:
raise ValueError("Image should have shape length of 3 (got: %s)" % len(image.shape))

# Handle thermal bands (experimental)
if photo.band_name == 'LWIR':
Expand Down Expand Up @@ -50,11 +52,13 @@ def dn_to_radiance(photo, image):

if V is not None:
# vignette correction
V = np.repeat(V[:, :, np.newaxis], image.shape[2], axis=2)
image *= V

if exposure_time and a2 is not None and a3 is not None:
# row gradient correction
R = 1.0 / (1.0 + a2 * y / exposure_time - a3 * y)
R = np.repeat(R[:, :, np.newaxis], image.shape[2], axis=2)
image *= R

# Floor any negative radiances to zero (can happend due to noise around blackLevel)
Expand Down