Hello, may I ask how to disable left and right image enhancement in the V2 ?

[goodsave]

Hello, may I ask how to disable the left and right mirror flipping enhancement in the V2 ?

[goodsave]

When training on data that only labels the left breast and not the right breast, if left and right mirror flipping enhancement is enabled, the prediction will lead to the problem of left and right crosstalk. How can I close it in the new version?

[oonatmai]

I think you can use nnUNetTrainer_onlyMirror01 in the nnunetv2/training/nnUNetTrainer/variants/data_augmentation/nnUNetTrainerNoMirroring.py
I also had the same problem with left/right mirroring in my task, and using this solved my problem.

[goodsave]

I think you can use nnUNetTrainer_onlyMirror01 in the nnunetv2/training/nnUNetTrainer/variants/data_augmentation/nnUNetTrainerNoMirroring.py I also had the same problem with left/right mirroring in my task, and using this solved my problem.

Thank you for your help. May I ask if nnUNetTrainer_onlyMirror01 is used for: not enabling left and right mirroring, but enabling up and down, as well as Z-axis mirroring?

[oonatmai]

Thank you for your help. May I ask if nnUNetTrainer_onlyMirror01 is used for: not enabling left and right mirroring, but enabling up and down, as well as Z-axis mirroring?

Based on their source code, I think it is. By default nnUNetTrainer_onlyMirror01 flips along axes (0, 1) in 3D (and (0,) in 2D). In many medical image formats where the axes convention is z,y,x, flipping (0, 1) would mean flipping z and y but not x, which often corresponds to “no left-right flip, but allowing up-down and slice-axis flips.
If you don't want mirroring at all, I think you can use the nnUNetTrainerNoMirroring class, it sets mirror_axes = None.

[zhengxiaolin555]

感谢您的帮助。请问nnUNetTrainer_onlyMirror01是否用于：不启用左右镜像，但启用上下以及 Z 轴镜像？

根据他们的源代码，我认为是的。默认情况下，在 3D 中沿轴 （0， 1） 翻转（在 2D 中沿轴 （0，）翻转）。在许多轴约定为 z，y，x 的医学图像格式中，翻转 （0， 1） 意味着翻转 z 和 y，而不是 x，这通常对应于“没有左右翻转，但允许上下和切片轴翻转。如果你根本不想要镜像，我想你可以使用 class 来设置它nnUNetTrainer_onlyMirror01``nnUNetTrainerNoMirroring``mirror_axes = None.

How do I use nnUNetTrainer_onlyMirror01? I am a beginner and relatively inexperienced.

[zhengxiaolin555]

当对只标注左乳房而不标注右乳房的数据进行训练时，如果开启了左右镜像翻转增强，预测会导致左右串扰问题。如何在新版本中关闭它？
How did you solve this problem and what code needs to be changed to use nnUNetTrainer_onlyMirror01?