TypeError: 'NoneType' object is not subscriptable about grad-cam.pytorch

[ddshan]

I solved my problem. Mine is caused by the layer_name. In my model, I use the X101_FPN model from detectron2 (https://github.com/facebookresearch/detectron2/blob/master/configs/COCO-Detection/faster_rcnn_X_101_32x8d_FPN_3x.yaml). The original code of this repo uses the last conv2d feature layer to compute CAM. But the last cov2d layer of X101_FPN is in the RPN module. So I modified the code to use the last conv2d feature layer instead.

[ddshan]

I have the same problem. This happens even using
image = torch.as_tensor(image.astype("float32").transpose(2, 0, 1)).requires_grad_(True)
Want to know how to solve this.

[Fly-dream12]

What codes have you modified? I can not open the image, can you list them? thanks @ddshan

[YuhuiMa]

I solved my problem. Mine is caused by the layer_name. In my model, I use the X101_FPN model from detectron2 (https://github.com/facebookresearch/detectron2/blob/master/configs/COCO-Detection/faster_rcnn_X_101_32x8d_FPN_3x.yaml). The original code of this repo uses the last conv2d feature layer to compute CAM. But the last cov2d layer of X101_FPN is in the RPN module. So I modified the code to use the last conv2d feature layer instead.

I still have not solved the problem by modifying the code like this. I don't know what else could cause this error.

[Zhaowss]

我也出现了类似的问题 请问有人解决了嘛