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Author Topic: Phantom 4 Multispectral  (Read 1984 times)

sakaic

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Phantom 4 Multispectral
« on: December 02, 2019, 04:52:32 PM »
Hi all,

Just got delivery of the Phantom 4 Multispectral. Would anyone here be interested in a sample dataset? I am uploading it to my Google Drive so if anyone wants it let me know and I will share a link here.

Does anyone have one yet? Any recommended workflow?

Paulo

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Re: Phantom 4 Multispectral
« Reply #1 on: December 02, 2019, 04:54:06 PM »
Please do,

it would be very interesting to test
Best Regards,

Paul Pelletier

Alexey Pasumansky

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Re: Phantom 4 Multispectral
« Reply #2 on: December 02, 2019, 04:57:06 PM »
Hello sakaic,

It would be helpful, if you can share the dataset acquired with the multispectral sensors, we'll check, if anything should be developed on our side to support that.
Best regards,
Alexey Pasumansky,
AgiSoft LLC

ArchArch

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Re: Phantom 4 Multispectral
« Reply #3 on: December 02, 2019, 05:07:16 PM »
I would be interested too, thank you. I teach GIS and Remote Sensing (for archaeology) and would love to play around with the data. Cheers!

sakaic

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Re: Phantom 4 Multispectral
« Reply #4 on: December 03, 2019, 06:11:40 PM »
Hi Guys,

You can download it here

https://drive.google.com/drive/folders/1FbQgvme0aisRcknUrhB4u3hbgY8fWn2x?usp=sharing

It stitches fine but I guess at the moment reflectance calibration is not possible yet.

Let me if there are problems downloading. My responses will be slow as I am in the field with a mapping mission.

Cheers

Alexey Pasumansky

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Re: Phantom 4 Multispectral
« Reply #5 on: December 04, 2019, 12:10:08 PM »
Hello sakaic,

Thank you for sharing the dataset.

We'll study the available information related to sun sensor meta-data and at some point will add the support for it and proper reflectance calibration operation.

In the current dataset it seems that sun sensor relative rotation and sun sensor absolute orientation angles are not available in the meta information.
Best regards,
Alexey Pasumansky,
AgiSoft LLC

sakaic

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Re: Phantom 4 Multispectral
« Reply #6 on: December 04, 2019, 08:57:32 PM »
Hi Alexey,

Is it possible to use the FlightRollDegree, FlightPitchDegree and FlightYawDegree data in the XMP data since the sunshine sensor is bolted directly on the RTK antenna?

Landy

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Re: Phantom 4 Multispectral
« Reply #7 on: May 28, 2020, 05:43:29 AM »
Hello Alexey,
Do you know if support has been added for the Phantom 4 pro multispectral yet?  Our uni has just purchased one and was I keen to give some data a go in metashape.
cheers
Bill

smhese

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Re: Phantom 4 Multispectral
« Reply #8 on: May 31, 2020, 07:55:50 PM »
We would also like to know if support for the P4M reflectance calculation with a reference panel photo is possible soon. So far the results are totally screwed when a Micasense panel (50%) is used.  Uncalibrated processing to a dense point cloud and orthomosaic works however fine. But without the calibration option the idea of using the P4M for research purpose investigating plant properties is useless. Manual raw correction with the 50% panel might work. But Pix4D supports radiometric correction of P4M data as far as I can see!

Kind regards! Sören Hese (Friedrich-Schiller-University Jena/Germany)

Alexey Pasumansky

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Re: Phantom 4 Multispectral
« Reply #9 on: June 02, 2020, 01:48:24 AM »
If you are observing any problems with the reflectance calibration operation, it would be helpful, if you could send the minimal dataset for testing to support@agisoft.com. So that we could check on our side, if there's anything wrong with our implemetation.
Best regards,
Alexey Pasumansky,
AgiSoft LLC