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  • Sigit Riyanto July 27, 2017 at 4:01am

    i have tested if we use photogrammetry standard formula  GSD = flight height (m) / Focal lenght (mm) x pixel size maybe we cannot find GSD as report software like agisoft photoscan report software. but if we use this formula GSD = (sensor height (mm) x flight height (m) x 100) / (focal lenght (mm) x image height (pixel)) we can get result as like software report. for example i use DJI phantom 3 pro camera that focal lenght = 3.61, sensor height 4.62, image height = 3000 pixel and flight heigt 173 m, from mission planner i can get result GSD 7.38 cm, from calculation using the formula GSD = (4.62 x 173 x 100)/(3.61 x 3000) = 7.38006

    IMHO, maybe useful

  • Cody November 21, 2016 at 7:19pm

    Hello,

    I am a student at UW-Green Bay and have worked with one of my physics professor to come up with an equation for the situation which you are asking. The equation is below in the image and is based on the way you calculate resolution for telescopes. You will need to use this equation twice to calculate the distance covered in both the x and y direction.

    I hope this helps!

    3702326387?profile=original

  • dharmana harish naidu October 26, 2016 at 9:05am


    brother where can i find focal plane?


    Pierre Stoermer said:

    Hi Matt:

    Try this: GSD (ground sample distance or resolution/pixel) = Pixel size X AGL / Focal length where:

    Pixel size = focal plane width or height (in mm) / focal plane # of pixels in either width or height,

    AGL = elevation above ground in meters,

    Focal length in mm.

    Additionally the frame size on the ground is GSD x focal plane # of pixels in either width or height.

    Pierre

  • Drones Imaging September 22, 2013 at 10:53pm

    Hi Matt,

    you can download an excel grid on DronesImaging.com

    http://www.dronesimaging.com/wp-content/uploads/2013/05/documentati...

    Good luck

  • Bill Isenberger July 21, 2013 at 8:07pm

    You might find the Dimensional Field of View Calculator on this web page handy.

    http://www.tawbaware.com/maxlyons/calc.htm
  • Drone Nerd June 12, 2013 at 4:40pm

    Hi!

    There are few app (Android/IOS) and others desktop software to do that. But easy, is through MP.

    In Mission Planner, on mission planner tab--> right click--> map toll--> camera.

    In these menu, could you insert your Cam model, add your Cam settings (focal lenght, width/height in pixel etc), clear sidelap and overlap to zero, inserting your AGL and you should have your FOV vertical/horizontal.

    I hope it can help you.

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