Operating system: tried on different systems, all of them better than the recommended hardware configuration
Slicer version: 4.10.1
Expected behavior: color / record the selected pixels using Draw of Level tracing should take no more than a second
Actual behavior: it takes 10 seconds.
Sorry if this post overlaps with a previous one, I couldn’t find anything related while going through the forum.
I am wondering how is the segmentation recording/saving coded, as segmentation of my current dataset (276 images for a total of ~450 Mo, i.e. not a big file) using simple tools like Draw or Level tracing takes some 10 seconds to display / record the segmented area after a “click”… My idea being to segment several structures every 5-10 slices to then “fill between slices”, it’s not doable.
I have to confess that I am new with Slicer, as I had access to (expensive) proprietary software until recently. With the latter such basic/simple segmentation operations were quasi-instantaneous (even working on much larger datasets), hence my surprise here.
So, I have tried 3 different operating systems so far (MacBook Pro, PC, gamer PC), all with higher spec than the recommended hardware configuration, and the result is identical (which is somehow reinsuring I suppose).
Now, if I only open 30 images (out of the 276), then Draw or Level tracing takes “only” 2-3 seconds to display / record the segmented area.
And around 1 second if I crop half of these images.
So, it seems to me that while applying the segmentation to a single tomographic slice, the code runs through the whole stack of images, making processing ?unnecessary long. Couldn’t it be a way to just “color” the pixels corresponding to the selected area, and only do the save /assignation of the segmented pixels within the whole volume in a later stage?
Thank you very much for your help. I really enjoy Slicer, in particular this Level tracing tool that, besides being unfortunately so slow for me, works extremely well and is incredibly useful for my applications.