thought i'd share the first steps with my sls rig.
Setup:
Viewsonic PLED-W500 (1280x800p DLP LED diamond)
YW500U3M camera 5mpix USB3 YUY2
ZLKC 12mm F1.4 C-mount lens
DIY 150mm panels made from cardboard and 20mm wood
Total hardware costs so far: ~300€
The first calibration gave me a RMS value of 0.189:
Code: Select all
- RMS error is ok: 0.189753
Camera 0 [YW500U3M (2FEC032D)] calibrated:
<camera_model>CameraModelTsai</camera_model>
<cx>1352.6744308236191046</cx>
<cy>841.39479384338369528</cy>
<f>6672.2796385739211473</f>
<sx>1</sx>
<kappa1>-1.1355731441117723929e-13</kappa1>
<resX>2592</resX>
<resY>1944</resY>
<nx>0.50383805549141680302</nx>
<ny>-0.01948580120589021164</ny>
<nz>-0.86357832151461078052</nz>
<ox>0.25183835582838937084</ox>
<oy>-0.95299922754555432824</oy>
<oz>0.16843371049534830441</oz>
<ax>-0.82627153912759321308</ax>
<ay>-0.30234545779446025948</ay>
<az>-0.47525000555368396293</az>
<px>655.71913985958099147</px>
<py>241.0697129790300437</py>
<pz>441.03874242193506916</pz>
Horizontal open angle: 21.9432
Vertical open angle: 16.6166
Calibrate Projector.
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CalibrateProjector: leftBackPlane = (p=5.36432e-17 5.36432e-17 57.1261 1 n=1 -0 -6.12323e-17 0)
CalibrateProjector: rightBackPlane = (p=55.2053 0.314087 -1.27935e-16 1 n=0.00618138 1.59425e-05 0.999981 0)
Angle between calibration panels: 90.3542 degree
Size of camera's center pixel at background plane: 0.201245 mm
cy=-0.5 rmsError=0.00409419
cy=0 rmsError=0.00409419
cy=0.5 rmsError=0.000358095
cy=1 rmsError=0.000358095
cy=1.5 rmsError=0.000358094
And for comparison the same rabbit, but scanned with photogrammetry (Sony Nex 5T, 1650SELP). The SLS quality is decent and i'm very happy so far.