how to calculate resolution of an image

"Our Flight Planner https://www.mapsmadeeasy.com/flight_planner will let you play with the numbers without getting bogged down in the math."
Could you point out the resolution in the last map I just created? Titled "CG FLYERS FIELD GPS"

You can't really calculate it after the fact. You just have to know the altitude you flew at and what camera you used. that will give you the best case GSD. When we texture the 3D model to create the orthomap a little stretching goes on, but we try to keep things as close to native resolution as possible.

I flew at 250 feet w/ a P3P. If you can refer me to the info, I'll work it out. Thanks.

Select the Phantom 3/Inspire 1 camera. Put 76 meters in for the altitude. That gives you 3.3cm/px or 1.29 in/px.

i have a question about resolution
What is the resolution if the flight as two passes with different altitude.
Because i have a flight at 40 m and an other at 60 m for the higher structure.
thanks for your help..

Berdeaux: That behavior is somewhat ill defined. The texturing stage will select the closest and most orthogonal image to use as the primary texture source so we would expect that the lower terrain would get the lower set of images. The higher terrain is questionable though. This is against the data collection guidelines since there are two different cruising altitudes.

Try it and find out!

Hola! un gusto saludarle esperando se encuentre bien!

Please see this page for the settings for the P4P:

https://support.dronesmadeeasy.com/hc/en-us/community/posts/115001833263-Points-calculation-with-P4P

 Zane muchas gracias por su ayuda, saludos.

Hello! for the Mavic Pro Platinum what are the parameters to use it in https://www.mapsmadeeasy.com/point_estimator

Thank you

Eddison

 In the future, please only post your question one time.

Hola!! muchas gracias!!

What are the parameters for the Mavic 2 Pro?

The Mavic 2 Pro is the same as the P4P with a 10.28mm focal length.

Hi. How do I know the height above ground of a dji mini 2 photo? I use mapsmadeeasy for orthomoisaics and get very accurate distance measurements, but what about a single picture? I want to measure an object from a dji mini 2 photo, and I followed the steps that you suggested... however, when I look at the metadata of the photo, the "altitude" is greater than the height above ground (67 m vs ~ 20 m). Is there a way to extract the height above ground of a single dji mini 2 photo, in order to estimate a distance (using your flight planner) of an object on the ground? Thank you!

Millo: This isn't really on topic for this conversation and this thread has been dead for 4+ years. Please ask your question as a new post instead of including 8 other people with off topic posts.