I am trying to obtain the lens distortion parameters for a DJI Phantom 4 Pro V2. I followed the instructions from the ODM documentation, but each time I get different results.
I tried with a 10x8 checkerboard on the computer screen, then on a A4 paper sheet. I also did a 19x14 checkerboard printed on an A1 paper sheet.
Below are my distortion parameters for each trial:
For each set of checkerboard pictured, I get different lens correction parameter values.
When I applying them in the images the difference is minimal.
I’ve read that the Phantom 4 Pro have its lens profile built-in in the opcode, but I am not sure what this means exactly.
Are the JPGs from the camera already undistorted based on the built-ins lens profile ?
In that case, is it still worth processing the images using the checkerborad parameters ?
Below is a link for the original JPG and undistorted image using results from the last column above.
Thanks for your help