Messages

1

General / Coordinate systems agisoft vs opencv Cameras

« on: October 27, 2022, 01:25:01 AM »

Hi!
I know this is a basic question, but I have been having some trouble as I'm writing a converser of camera calibration from  opencv -> agisoft -> opencv. My initial assumption is that coordinate systems of both matched, i.e.  x right, y down, z forward (from the camera). Is this correct?
Many thanks! (I've been banging my head against a table for some time now)
 

2

Camera Calibration / Re: OpenCV calibration conversion to Agisoft Metashape

« on: July 10, 2021, 05:44:00 PM »

I see. Thanks for clarifying that!

3

Camera Calibration / OpenCV calibration conversion to Agisoft Metashape

« on: July 10, 2021, 01:10:54 AM »

Hi!

I'm trying to convert an OpenCV calibration into an Agisoft one. When I import an OpenCV calibration into Agisoft, and export it as an Agisoft xml. The values are mostly the same on both .xml, aside from c_x and c_y that had 0.5 added to them. Does anyone know why that is?

Many thanks!

4

Camera Calibration / Re: Workflow for Insta360 One X

« on: July 09, 2021, 06:20:45 PM »

Hi @Paulo,

I know this post hasn't been active for awhile. But I saw that you obtained
b1MS = fxOCV - fyOCV

So the affinity is computed in metashape as the difference of x and y focal lengths? I've been trying to convert a full calibration of OpenCV to Metashape and have been trying to find how to compute the affinity and skew and this is super relevant!

Thanks!