360° alignment issue and calibration settings questions
Posted: 09 Apr 2020, 19:58
Hi all,
i am struggling with alignment issues since quite a long time. I getting almost frustrated and i am hoping somebody here in the forum can help me.
I have original HP SLS Pro S3 setup with original HP high quality calibration panels and HP turntable.
The main problem i have is to align 360° scans where first and last scan will be merged. I have already checked all alignments of the scans but here i do not see any major issues ... only at the end.
Long time i have scanned by using all advance settings on default values.
Later on i have activated the option "CompensateAngelBetweenPatterns" and the situation improved but it's still not on acceptable level. I was quite surprised to see that even with original HP scan panels the angle was way off.
From calibration log it shows 90.2367 degree. I guess the situation improved because i have activated the compensation.
Scan of calibration pattern with Quality Check = 1:
Scan of calibration pattern with Quality Check = 0.8:
Scan of calibration pattern with Quality Check = 0.6:
To get smooth and closed surface i need to scan with Quality Check 0.6-0.8.
Scanning with Quality Check = 1 is almost not possible because amout of points not enough.
The scanned object in this example is about 100mm long and i have used the 60mm pattern. I have already tried some different settings in the advanced settings menu but i could not further improve the situation.
Any idea about which settings could improve the situation?
Is there something more which can be concluded from above calibartion log?
Many thanks for your help!!!
Christian
i am struggling with alignment issues since quite a long time. I getting almost frustrated and i am hoping somebody here in the forum can help me.
I have original HP SLS Pro S3 setup with original HP high quality calibration panels and HP turntable.
The main problem i have is to align 360° scans where first and last scan will be merged. I have already checked all alignments of the scans but here i do not see any major issues ... only at the end.
Long time i have scanned by using all advance settings on default values.
Later on i have activated the option "CompensateAngelBetweenPatterns" and the situation improved but it's still not on acceptable level. I was quite surprised to see that even with original HP scan panels the angle was way off.
From calibration log it shows 90.2367 degree. I guess the situation improved because i have activated the compensation.
Code: Select all
Generate geometry... done.
Generate geometry... done.
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Generate geometry... done.
Generate geometry... done.
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Generate geometry... done.
Generate geometry... done.
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Trying to connect forcing that format...
Connected.
Trying to connect forcing that format...
Connected.
-> Setup is 'inner corner'
- RMS error is ok: 0.226991
Camera 0 [HP 3D 2.3MP Cam Pro (15710621)] calibrated:
<camera_model>CameraModelTsai</camera_model>
<cx>1010.2246168842227689</cx>
<cy>585.53833607535648298</cy>
<f>4354.1856709913208761</f>
<sx>1</sx>
<kappa1>4.4759564916411224033e-09</kappa1>
<resX>1920</resX>
<resY>1200</resY>
<nx>0.88125862805627197538</nx>
<ny>0.10050500438179138518</ny>
<nz>-0.46182461451355499849</nz>
<ox>0.19958382592239376496</ox>
<oy>-0.96486814595253311833</oy>
<oz>0.17086766035824654808</oz>
<ax>-0.42842680460792503805</ax>
<ay>-0.24275132341624336418</ay>
<az>-0.87035755185619290142</az>
<px>173.0579443546631353</px>
<py>82.228848598560148275</py>
<pz>320.19647616190292183</pz>
Horizontal open angle: 24.9178
Vertical open angle: 15.721
Calibrate Projector.
~
~
~
CalibrateProjector: leftBackPlane = (p=-1.12035e-17 -1.12035e-17 22.317 1 n=1 -0 -6.12323e-17 0)
CalibrateProjector: rightBackPlane = (p=22.1219 -0.146048 -4.63094e-17 1 n=0.00413175 2.52997e-19 0.999991 0)
Angle between calibration panels: 90.2367 degree
Size of camera's center pixel at background plane: 0.123693 mm
cy=-0.5 rmsError=0.00334046
cy=0 rmsError=0.00334048
cy=0.5 rmsError=0.000527335
cy=1 rmsError=0.000527335
cy=1.5 rmsError=0.000527335
172 outliers removed (total 10042)
262 outliers removed (total 10042)
~
~
~
<camera_model>CameraModelTsai</camera_model>
<cx>0.51304923588548601021</cx>
<cy>0.94457566639232448669</cy>
<f>2.48652325779162231</f>
<sx>0.62587264757847482777</sx>
<kappa1>0.0058676394785032752119</kappa1>
<resX>1</resX>
<resY>1</resY>
<nx>0.6231397100524080912</nx>
<ny>-0.0087937903437710907006</ny>
<nz>-0.7820611043947849339</nz>
<ox>0.33086598750315715511</ox>
<oy>-0.90308857628412897434</oy>
<oz>0.27378590485754655814</oz>
<ax>-0.70867806518147680173</ax>
<ay>-0.42936428896275796729</ay>
<az>-0.55984078745134657762</az>
<px>238.10725495334736479</px>
<py>70.026041867804195817</py>
<pz>186.36530639315995472</pz>
Saving C:\Program Files\DAVID 3D SCANNER 5\Settings\UserSettings.xml ...done.
Scanning with Quality Check = 1 is almost not possible because amout of points not enough.
The scanned object in this example is about 100mm long and i have used the 60mm pattern. I have already tried some different settings in the advanced settings menu but i could not further improve the situation.
Any idea about which settings could improve the situation?
Is there something more which can be concluded from above calibartion log?
Many thanks for your help!!!
Christian