Using getImageCropped function in PyAutoscoper. Getting truncated/empty data

Community SlicerAutoscoperM
1

I’m trying to use getImageCropped from PyAutoscoper to extract the cropped DRR image of a volume at a given pose. My setup works fine otherwise – getPose, getNCC, optimizeFrame, and trackingDialog all work correctly. This is the output i am getting:

image
image2316×1072 241 KB

The width and height (1760x1760) look correct, but the byte array is only 1015 bytes long and entirely zeros. For a 1760x1760 image I’d expect significantly more data.

  1. What is getImageCropped supposed to return exactly? The docstring says list[float] but it actually returns [width, height, raw_bytes]. What format/dtype is the image data (float32, uint8, RGB, grayscale)?
  2. Is there another recommended way to programmatically extract DRR or radiograph images from Autoscoper?

Thanks for the help!

2

Hi Prabhroop,

My experience with using socket controls for SlicerAutoscoper has been limited to Matlab. I don’t believe there is an equivalent function, so I can’t answer your questions presently. However, this is something I can look into and get back to you on.

Thank you,

John

3

Hi John,

Just following up on this, any updates on the socket controls on the Python side?

Thanks,

Prabhroop

4

Hi Prabhroop,

I did test the Python socket controls, and got the same results that you did. Troubleshooting this is beyond my expertise, so I have elevated this issue. There was a similar function in the documentation for the Matlab socket controls; however, this function was never fully implemented. It is possible that the Python socket function and other socket controls were not fully implemented.

Thank you,

John