About RoiCenterCrop

[XieXiao1997]

In my project, the ROI is bilateral asymmetric, similar to the breast area, and the ROI class is the same "1".
What method should I use if I want to cut both sides with ROI as the center? I tried using the SpatialCrop method, but it is not supported to input ROI images directly for image clipping.

[Nic-Ma]

Hi @ericspod @dongyang0122 @wyli ,

I feel this question is related to some research discussion, could you please help share some experience here?

Thanks in advance.

[ericspod]

Perhaps CropForeground is what you want. You can provide a callable to choose another criteria if you want, by default it's is_positive based on an input label in a particular channel. If you're using dictionary based transforms CropForegroundD is what you'd want. Docs here: https://docs.monai.io/en/latest/transforms.html#cropforeground

[XieXiao1997]

I used Kmeans to solve the problem and itthen used the SpatialCrop based cluster center.. it worked

[ericspod]

Ok so your solution was to use a separate technique to find a ROI center and use that. It works with SpatialCrop but also with CropForeground by using your technique in a function passed in as select_fn.