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Author Topic: Building dense cloud for soil surface (bare soil)  (Read 3096 times)

Bene

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Building dense cloud for soil surface (bare soil)
« on: January 24, 2016, 03:19:21 PM »
Dear,

I work with soil and I'm processing some models of soil surface, in order to calculate the volume of soil losses by water erosion. I'll compare the models and through the difference between them find the volume eroded. I don't have vegetation in pictures, just bare soil. I have an average of 200 photos in each project. The pictures was taken by UAV (DJI Phantom 3).

So, I need your help to know what is the best configuration to process the dense cloud.

What do you suggest me?

Thanks!

Kind regards,
Bernardo

Ardu

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Re: Building dense cloud for soil surface (bare soil)
« Reply #1 on: January 26, 2016, 03:03:45 PM »

Paulo

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Re: Building dense cloud for soil surface (bare soil)
« Reply #2 on: January 26, 2016, 07:05:03 PM »
On these DJI's the cameras are often super wide angle and so maybe you can better results if you define your camera as Fisheye instead of Frame in Camera Calibration....
Best Regards,
Paul Pelletier,
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SuperNewb

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Re: Building dense cloud for soil surface (bare soil)
« Reply #3 on: January 26, 2016, 11:14:40 PM »
The Phantom 3 and Inspire 1 are not very close to a fisheye lense.  The older phantom 1 and 2 used gopro cameras which were very fish eyed.

There should be no need to calibrate the phantom 3 camera.

-Capture the images in the brightest conditions possible.

-generate sparse point cloud on high or very high setting using Reference mode.
   -clean up points

-generate dense point surface on medium or high setting.  (Ultra high setting does not add much with DJI cameras, just creates unwanted noise.)

Is this what you were looking for or are you talking PC configuration?

Bene

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Re: Building dense cloud for soil surface (bare soil)
« Reply #4 on: January 27, 2016, 03:15:55 PM »
Hi SuperNewb,

You help me a lot with your advice.

And what about the PC specs? Do you have some experience and can suggest me something?

Thanks!
B