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Messages - Marburg

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General / Re: Photoscan Distortion Coefficients
« on: June 13, 2018, 01:42:06 AM »
On the off chance that someone finds this by Google, I am now using:

[lower case is OpenCV, UPPER CASE is Photoscan]

k = [ F+B1;    B2;   CX + width/2;
        0       ;    F;      CY + height/2;
        0       ;    0;      1 ]

k1 = K1
k2 = K2
k3 = K3

Photoscan's K4 doesn't map to Opencv

p1 = P2  <!! note
p2 = P1  <!! note

This is correct for Photoscan P3 = P4 = 0

General / Re: Defining coordinate system / origin for camera stations
« on: July 26, 2016, 11:42:49 PM »
Thanks, I was able to get that to work well enough.   

Is there a way to do it numerically --- that is, explicitly define one of the cameras/images as being 0 pitch / 0 roll / 0 yaw?  Tried manually importing a camera reference file with just one image in it, but that didn't seem to have effect.

General / Defining coordinate system / origin for camera stations
« on: July 21, 2016, 08:45:44 PM »
Quick question.   We have designed a hemispherical multi-camera rig.   We're using station groups to bundle the photos from each "snapshot" with the rig.   This works great and we are able to generate panos and from each group.

However, one of the cameras/image is mechanically fixed at center of the array and points "forward".   I'd like to be able to define this camera as having 0 pitch/roll/yaw in the coordinate frame of the group.   So far, the origin/orientation for the camera group seems pretty arbitray.   

As a side effect I'd want this center image be at the center of any panos (and be the least distorted).

Is it possible to do this?

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