Why is my Contrast Loss always 0?

[liubaoning111]

No description provided.

[leo-lab-511]

我的也是，但不是对比损失

[zhang-haojie]

In cases with only one target in an image, the absence of negative samples in the contrast loss construction results in a constant 0 loss. We have used a method to treat the background as a special instance. We will update the new version to avoid this problem soon.

[liubaoning111]

你好，我想问下，咱们的弱监督是可以分割多个目标的吗？我有一个msk有四个目标，背景0，目标1：1，目标2：2，目标3：3，可以直接实现分割吗？

[zhang-haojie]

可以的，SAM原本支持什么样的分割，我们也同样支持。弱监督的格式是SAM接收的prompt格式。