DJI Phantom 3 and Photoscan

[adioperator]

Hi,

I use Phantom 3 Pro and Pix4D Capture App on Android to plan the missions.
After load and align photos in Photoscan, the images are no longer in line.
Does anyone know where I'm wrong?

Thanks,
Adrian

[HMArnold]

Adrian,

The only time I've ever seen anything like this was when I tried "Camera Based" to align 2 chunks (see attached)

If that's not what you're doing, you might try to decrease the "Accuracy" value for your images prior to alignment to get Photoscan to have a little more faith in the EXIF GPS values.

I normally run my Phantom Pro 3 images at "1", but I include the heading (yaw) at the same time.

It looks from the un-aligned cameras in the image you sent that you're running a straight orthogonal grid pattern. If so, it's pretty simple to create an import file by hand that assigns the accuracy value and heading at the same time.

As with most Photoscan problems, if you go back and fly that same area with a closer grid pattern and a slower speed to increase the overlap, you'll probably get better results.

Hank
Texas

[antstruf]

Hello. I also use the DJI phantom 3 to take aerial photos and to get the 3D model with the dense cloud points.
I developed the photos with photospop for lens corrections.
Then I uploaded photos in PhotoScan leaving the menu Camera Calibration "frame" per room type.
I took over the points (markers) with a GNSS receiver. I entered the geographic coordinates of the markers in PhotoScan.
I found a 26 centimeters errors over a distance of 180 meters between two markers.
I set the reference system WGS84 + EGM96 geoid height, by entering latitude and longitude coordinates of the markers