Mission Planning for Photogrammetry

[arpitrocks]

Hello Everyone!

I am a beginner and have started using Mavic Pro 2 for about a month especially to do photogrammetry. To perform mission flights, I have tried different applications such as DroneDeploy, DJIGO4, Pix4D, however, my flights were limited by the minimum altitude (10 meters - Pix4D).

I would like to fly as low as 5 meters above the ground with a planned mission flight to have better GSD. I would really appreciate, if somebody can suggest/recommend me a way to do it?

Have a great day!

Arpit

 

[Keule]

I would like to fly as low as 5 meters above the ground with a planned mission flight to have better GSD.

You can have a GSD of 0.1 cm/px with a Mavic 2 Pro camera when flying at 5m height.
DJI Ground Station Pro is capable of flying that low.

DJI GS Pro

GS Pro (also known as Ground Station Pro) is an iPad app designed to control or plan automatic flights for DJI aircraft. Through its clear, concise interface, complex flight missions can be planned with a few taps. GS Pro will then automatically take pictures at pre-set waypoints, providing the...

apps.apple.com

It is not very efficient because the flight time required (i.e. batteries used), side and front lap results in an excessive amount of images produced by the sensor and therefore significantly more processing power and time needed afterward.
In addition, the flight height is more error-prone to deal with obstacles or changing ground elevation.

If you really need the GSD, then you must go for a different camera system.

There is more about this specific topic, just read more on various sites on the Internet about that.
Start here:

Step 1. Before Starting a Project > 1. Designing the Image Acquisition Plan

Index > Step 1. Before Starting a Project Previous | Next In order to automatically get high accuracy results, a high overlap between the images is required. Therefore, the image acquis...

support.pix4d.com

 

[Camino Ken]

Hello Everyone!

I am a beginner and have started using Mavic Pro 2 for about a month especially to do photogrammetry. To perform mission flights, I have tried different applications such as DroneDeploy, DJIGO4, Pix4D, however, my flights were limited by the minimum altitude (10 meters - Pix4D).

I would like to fly as low as 5 meters above the ground with a planned mission flight to have better GSD. I would really appreciate, if somebody can suggest/recommend me a way to do it?

Have a great day!

Arpit

Just curious, what is GSD?

 

[Keule]

Just curious, what is GSD?

GSD = Ground Sampling Distance

A GSD of 3 cm means that one pixel in the image represents linearly 3 cm on the ground (3*3 = 9 square centimeters)

 

[Camino Ken]

GSD = Ground Sampling Distance

A GSD of 3 cm means that one pixel in the image represents linearly 3 cm on the ground (3*3 = 9 square centimeters)

Thanks

 

[BillyP]

Just curious, what is GSD?

Thank you!

 

[BobbyBob]

Hi Arpit : You are not alone. By coincidence - I'm trying to achieve exactly the same thing. I'm encouraged by the useful info from KEULE that 0.1cm GSD can be achieved. I'm conscious that it's not only GSD and mega pixels that contribute to clear imaging of very small details: It's the host of trade-offs that prevent blur too; such as gimbal performance and shutter speed (and associated factors like aperture size, and performance at high IOS/ASA, . I've started a separate thread on a related question : Which drone will give the best results for this Mavic 2 Pro or Mavic Zoom? And of course there is our other big question - which flight planning software will enable this !

 

[OliverDrool]

Just curious what applications require such a low altitude / small GSM?

 

[mmoguls]

Exactly. What are you napping? Ant colonies?
"Honey I Shrunk The Kids!"

Just curious what applications require such a low altitude / small GSM?