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Author Topic: Small Circles in ortophoto  (Read 1753 times)

awbtopografia

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Small Circles in ortophoto
« on: February 05, 2020, 12:46:52 AM »
hi Guys, I have a problem with the metashape in the final generation of the orthophoto.
See the attached images, some places have white circles.
The image that is generated in the report, however, did not present these circles, getting even better than the tiff generated from the orthophoto.
any sugestion on how to solve?

thanks.

JMR

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Re: Small Circles in ortophoto
« Reply #1 on: February 05, 2020, 02:12:30 PM »
This is normal (and unavoidable). This light spots are around the projection of the drone shadow. Around this point the reflection of ground surface towards the camera has a maximum. This tends to be more noticeable in herbaceous crops. You should see the same spot in every picture.
You could atenuate this effect by using average, instead of mosaic... but this often blurrs the orthoimage.
Regards
GEOBIT

awbtopografia

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Re: Small Circles in ortophoto
« Reply #2 on: February 06, 2020, 02:16:33 AM »
@JMR


It worked! Thank you!  ;D

nprp

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Re: Small Circles in ortophoto
« Reply #3 on: February 11, 2020, 10:11:13 AM »

You could atenuate this effect by using average, instead of mosaic... but this often blurrs the orthoimage.


I would recommend to use simple masks where the center spot is hidden. It works well and you still can use mosaic blending.