Sven wrote:Hi all,
Thank you for your reports. We have done a lot of tests, and indeed, in some setups the calibration can be somewhat off, so that scans of left and right camera don't fit together (Extended View mode only).
We have improved calibration for two cameras. It is now much more robust especially when the calibration corner is not built precisely, or when the camera view direction is not ideal.
For those who have seen that problem, please try our new beta version: http://downloads.david-3d.com/software/ ... _beta1.zip
The relevant new setting is at Advanced Settings -> Calibration -> OptimizeMultiCameraCalibration (on by default)
Sven wrote:Hi Micr0,
Good to hear!
"OptimizeMultiCameraCalibration" indeed also does some optimization when there is just one camera. That may be dangerous... We'll discuss and probably switch it off for 1 camera.
Do you now also get good results with convex "negative" corner calibration?
micr0 wrote:And you say 2 cameras is more accurate?
Sven wrote:Happy to see that, after you had so much trouble...micr0 wrote:And you say 2 cameras is more accurate?
There is no easy answer. Let me try: In ideal conditions, Dual-Camera setups are not more accurate than one-camera setups. However, in real life, the following effects can and do happen:
- Thermal drift in projector --> Dual Camera is immune
- limited quality of most projector lenses (distortions) --> Dual Camera is immune
- "difficult" / deviant reflection of projected pattern on some object surfaces, e.g. when textured --> Stereo is more robust against that
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