Train on custom dataset about patch-netvlad

[Tobias-Fischer]

Hi @JiananZhao0224, many thanks for your interest in Patch-NetVLAD. We will release training code in the next few weeks.

Best, Tobias

[StephenHausler]

Hi @wzxuhuaiyuan, thanks for your interest in our work! We will have the training code released by the end of this month at the very latest.

[Tobias-Fischer]

Hi @alien19, many thanks for your message. At the moment we do not support training on a custom dataset in this repository. I'll chat again with @StephenHausler to see how much work it would be for us to support this - but unfortunately it is not a priority at the moment with several deadlines coming up for us.

[alien19]

Thanks @Tobias-Fischer, looking forward to your reply and good luck with your deadlines.
But for now if you can provide a brief about the Mapillary dataloader or the metadata required for training the model, I'd be very thankful.

[Zhaozhpe]

Hello, I am also trying to train Patch-NetVLAD on a custom dataset, but it's not going very well. I would like to ask if you have solved this problem, or if it is convenient to communicate this problem together.

[wzxuhuaiyuan]

Hi! I'm very inspired by your wonderful work! Could you tell me when you will release the training code? I want to train it myself. Thanks.

Best, Huaiyuan

[Tobias-Fischer]

Just in time - @StephenHausler managed to get it done in #20

Please let us know if you run into issues.

[alien19]

Hi @Tobias-Fischer , I'd like really to show my appreciation for your work but I want to know if there is a provided code for training Patch-NetVLAD on a custom dataset or how to build my dataset to be compatible with the available code

thanks in advance.

[Tobias-Fischer]

Hi, do you have any specific questions? Most of the code is in https://github.com/QVPR/Patch-NetVLAD/tree/main/patchnetvlad/training_tools

[alien19]

Thank you @Tobias-Fischer, I checked most of the code (not all yet) in order to try the training code with the "Mapillary dataset" so, now I want to know how to form my dataset in order to supply the model with it for training (already checked that there are 4 metadata files)

[Zhaozhpe]

@alien19

[alien19]

Hi @Zhaozhpe , actually I cannot remember what I have reached in that problem since it has been a while ago (I will check though). Until then, yes we can communicate to solve it together. just tell me the point u have reached or ping me on [email protected] to discuss further details.

[JSP-ywu]

Hi! Can I get advice about training on a custom dataset? I think this repository doesn't support training on a custom dataset directly. I need to implement original netVLAD with PCA and this repository help me out about what I wonder. But the code for a custom dataset is missing. @alien19 , may I contact you via mail address you wrote?

[StephenHausler]

Hi, I can try and offer some tips that might help. For a custom dataset, a lot of the training code will stay the same as in msls.py. You can pretty much reuse these functions from msls.py:
def getitem()
def update_subcache()
def new_epoch()

Writing a new init() function will require the most work. In init, you need to add in code to find positive images for training (you need GPS data for this), to fill in a pos_indices variable (see line 157 of msls.py). You'll need to populate some self.qIdx, self.pIdx and self.negIdx (indices to locations in query/reference sets) and self.qImages, self.dbImages containing paths to the respective query/reference image sets for your new dataset.