[ITK-users] Speed Issue

[Lowekamp, Bradley (NIH/NLM/LHC) [C]]

Hello,

Regarding single threaded region growing, the nature of regions growing with a breadth first algorithm is inherently single threaded. However, the equivalent results can be obtained by doing a global threshold, followed by connect components analysis. Both of those algorithms are efficiently multi-threaded. Depending on the size of the image, shape of region, and other factors, one approach may be more efficient than the other.

HTH,
Brad


> On Apr 7, 2017, at 7:27 PM, Xiaopeng Yang(산업경영공학과) <yxp233 at postech.ac.kr> wrote:
> 
> Hi,
> 
> I found that ITK (such as fast-marching level-set, threshold-based level-set, and region growing) does not use all CPU cores during computation. 
> 
> My questions include:
> 1. Does ITK support full CPU cores computation?
> 2. Did anyone try to speed up ITK? If so, What is the best and fast way to speed up ITK? And how much faster than before can I achieve?
> 
> I appreciate any help in advance. Thank you.
> 
> Best regards,
> Xiaopeng
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