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micasense / imageprocessing

MicaSense RedEdge and Altum image processing tutorials
https://www.micasense.com
MIT License
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micasense proximal use #189

Open wanghanruibaba opened 2 years ago

wanghanruibaba commented 2 years ago

Hi, I'm using MicaSense RedEdge to take close-up shots of plant canopies, the calibration program in the repository, is it also applicable for close-range reflectance calibration? thank you, thanks

poynting commented 2 years ago

Not using the code in this library. See https://github.com/micasense/imageprocessing/issues/183

wanghanruibaba commented 2 years ago

Thank you for your reply, but, using micasense at close range, the DN value is converted into reflectance, is there a corresponding tutorial? Express my gratitude to you, thank you

poynting commented 2 years ago

Converting DN to reflectance from close range is no different than from a distance. The challenge with close range is that the lighting can be uneven due to reflections from close by objects, or, in the case of inside a greenhouse, the lighting is very inconsistent. The other challenge is that due to parallax effects, the images are difficult to align without substantially different methods. This is why you were provided that answer by @fdarvas in your other issue https://github.com/micasense/imageprocessing/issues/183#issuecomment-1110277989

Please start with the tutorial articles

wanghanruibaba commented 2 years ago

Thank you for your patience in replying and expressing gratitude to you