resampling setting in pyradiomics 2.0.1

[Zhenwei Shi]

Hi, developers

When I am using resampling, I found a wired thing. 

According to the results: the general_info_GeneralSettings is: 

{'distances': [1], 'voxelArrayShift': 1000, 'additionalInfo': True, 'force2D': False, 'interpolator': 'sitkBSpline', 'voxelBased': False, 'resampledPixelSpacing': [0, 0, 2], 'label': 1, 'normalizeScale': 1, 'normalize': False, 'force2Ddimension': 0, 'removeOutliers': None, 'minimumROISize': None, 'binWidth': 25, 'minimumROIDimensions': 1, 'preCrop': False, 'resegmentRange': None, 'padDistance': 10}

The general_info_ImageSpacing is still the original pixel spacing. The wired thing is the general_info_VoxelNum has changed. See the attachment, results and parameter file. 

Could you please tell me what is wrong?

Best,

Zhenwei

[Joost van Griethuysen]

Dear Zhenwei,

Nothing is wrong, general_info_ImageSpacing gives you the original spacing of the image, i.e. before resampling is applied. Conversely, voxelNum is the number of voxels the extraction is based upon, and reflects the voxels in the ROI after all pre-processing is done.

Regards,

Joost

Op dinsdag 18 september 2018 17:40:28 UTC+2 schreef Zhenwei Shi:

[Zhenwei Shi]

Hi, Joost

Thanks for your answer. One more question about resampling: the original image spacing is [0.9,0.9,3]. When I set resampledPixelspacing [2,2,2], the result is [2,2,2] or [0.9*2 ,0.9*2 ,3*2] or others?

Best,

Zhenwei

[Joost van Griethuysen]

[2, 2, 2]

Op woensdag 19 september 2018 10:49:03 UTC+2 schreef Zhenwei Shi: