[IGSTK-Users] planePhantomUSCalibrationEstimation for Ultrasound Calibration Framework for the Image-Guided Surgery Toolkit

[Lingfeng Zhuang]

Hi all,

Anyone has used planePhantomUSCalibrationEstimation in Ultrasound
Calibration Framework for the Image-Guided Surgery Toolkit to calibrate your
US probe?

I run a test data for my US probe. The transform is gained by NDI Polaris
device. The sum of squares is large and the image scale is obviously
incorrect.

Plane phantom, experimental data:
---------------------------------
0.000223376 -0.000450695 0.000226965 -0.000216878 -7.96634e-005
-5.46968e-005 0.000276892 -7.75889e-005 -0.0002284
0.262343 0.0648356 0.51225 -0.0316988 -0.11508 -3.67291e-005 1.75939e-005
4.90463e-006 0.25156
**Analytic least squares**
omega1[y,x]:
        [1.10932, 1.29893]
t1[z]:
        [6132.66]
t3[x,y,z]:
        [25682.8, -2479.49, -9834.11]
omega3[z,y,x]:
        [-0.828627, 1.10716, -2.99473]
m[x,y]:
        [22.6911, 127.644]
sum of squared errors: 1.04538e+010


0.000223376 -0.000450695 0.000226965 -0.000216878 -7.96634e-005
-5.46968e-005 0.000276892 -7.75889e-005 -0.0002284
0.262343 0.0648356 0.51225 -0.0316988 -0.11508 -3.67291e-005 1.75939e-005
4.90463e-006 0.25156
**Iterative least squares**
omega1[y,x]:
        [1.94719, 1.84331]
t1[z]:
        [464.568]
t3[x,y,z]:
        [18.826, -13.2363, -90.2215]
omega3[z,y,x]:
        [1.22073, 3.52891, -2.15949]
m[x,y]:
        [0.19759, 0.308288]
sum of squared errors: 27.7597



Thanks

superZZ
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