IndexError: list index out of range #3
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Hi, what data are you training on? Is it the tennis demo or your custom video? H_0 and H_1 are homographies for the current and next frame, respectively. This error is probably because the homography file isn't formatted correctly. |
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Thanks for your reply. I used the tennis demo for training the network. Is there any wrong with the origin tennis data in this repos? Also, after I change the parameter max_dataset_size to 70, the code run without error.
BTW, I have another question. How many epochs does the network run based on the tennis demo?
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…------------------ Original ------------------
From: Erika Lu ***@***.***>
Date: Mon,Jul 26,2021 10:33 PM
To: erikalu/omnimatte ***@***.***>
Cc: Alxendx ***@***.***>, Author ***@***.***>
Subject: Re: [erikalu/omnimatte] IndexError: list index out of range (#3)
Hi, what data are you training on? Is it the tennis demo or your custom video?
H_0 and H_1 are homographies for the current and next frame, respectively. This error is probably because the homography file isn't formatted correctly.
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That's strange, I just checked and I don't get this error, even without changing max_dataset_size. The default number of training steps is 12k (the number of epochs it corresponds to will depend on the batch size you use). You may want to increase the number of training steps if you're using a small batch size. |
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Emmm it’s very confusing for the error. Also, 12K with batch size of 8 may cost more than 10 hours which is so expensive for a certain experiment.
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From: Erika Lu ***@***.***>
Date: Mon,Jul 26,2021 11:32 PM
To: erikalu/omnimatte ***@***.***>
Cc: Alxendx ***@***.***>, Author ***@***.***>
Subject: Re: [erikalu/omnimatte] IndexError: list index out of range (#3)
That's strange, I just checked and I don't get this error, even without changing max_dataset_size.
The default number of training steps is 12k (the number of epochs it corresponds to will depend on the batch size you use). You may want to increase the number of training steps if you're using a small batch size.
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What GPU are you using? It took about 2 hours to run on 2 P100 GPUs. |
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I run on a Tesla V100
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…------------------ Original ------------------
From: Erika Lu ***@***.***>
Date: Mon,Jul 26,2021 11:49 PM
To: erikalu/omnimatte ***@***.***>
Cc: Alxendx ***@***.***>, Author ***@***.***>
Subject: Re: [erikalu/omnimatte] IndexError: list index out of range (#3)
What GPU are you using? It took about 2 hours to run on 2 P100 GPUs.
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Hello, could you tell how to get zbar.pth for a new dataset. What's the zbar meaning? i also confused whether zbar would be update if it is set randomly in the network? |
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zbar.pth is randomly initialized and saved if it doesn't already exist, otherwise the existing file is loaded. These values aren't updated during training. It is random fixed noise that represents the input for the background layer. |
hello, when i run the training command, the error occurs. i'm confused about the H0 and H_1 parameters, what's the meaning of these two parameters?
Traceback (most recent call last):
File "train.py", line 88, in
main()
File "train.py", line 42, in main
train(model, dataset, visualizer, opt)
File "train.py", line 54, in train
for i, data in enumerate(dataset): # inner loop within one epoch
File "/home/notebook/data/personal/80303875/project/omnimatte/omnimatte/third_party/data/init.py", line 92, in iter
for i, data in enumerate(self.dataloader):
File "/opt/conda/lib/python3.7/site-packages/torch/utils/data/dataloader.py", line 517, in next
data = self._next_data()
File "/opt/conda/lib/python3.7/site-packages/torch/utils/data/dataloader.py", line 1179, in _next_data
return self._process_data(data)
File "/opt/conda/lib/python3.7/site-packages/torch/utils/data/dataloader.py", line 1225, in _process_data
data.reraise()
File "/opt/conda/lib/python3.7/site-packages/torch/_utils.py", line 429, in reraise
raise self.exc_type(msg)
IndexError: Caught IndexError in DataLoader worker process 1.
Original Traceback (most recent call last):
File "/opt/conda/lib/python3.7/site-packages/torch/utils/data/_utils/worker.py", line 202, in _worker_loop
data = fetcher.fetch(index)
File "/opt/conda/lib/python3.7/site-packages/torch/utils/data/_utils/fetch.py", line 44, in fetch
data = [self.dataset[idx] for idx in possibly_batched_index]
File "/opt/conda/lib/python3.7/site-packages/torch/utils/data/_utils/fetch.py", line 44, in
data = [self.dataset[idx] for idx in possibly_batched_index]
File "/home/notebook/data/personal/80303875/project/omnimatte/omnimatte/data/omnimatte_dataset.py", line 129, in getitem
data_t2 = self.get_transformed_item(index + 1, transform_params)
File "/home/notebook/data/personal/80303875/project/omnimatte/omnimatte/data/omnimatte_dataset.py", line 194, in get_transformed_item
bg_flow = self.get_background_flow(index, mask_w, mask_h) # 2, H, W
File "/home/notebook/data/personal/80303875/project/omnimatte/omnimatte/data/omnimatte_dataset.py", line 287, in get_background_flow
H_1 = self.homographies[index + 1]
IndexError: list index out of range
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