Classes of ActivityNet - Githubissues

activitynet / ActivityNet

This repository is intended to host tools and demos for ActivityNet

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Classes of ActivityNet #3

Closed antran89 closed 7 years ago

antran89 commented 7 years ago

Hi the organizers, I want to explore ActivityNet dataset. I am running to the problem of classes of ActivityNet dataset, because we only know classes of a video by looking at json file annotation. I want a standard classes.txt for cross-checking and also use as a 'numerical' category for training a CNN. Best regards,

antran89 commented 7 years ago

Is there any tools to visualize the taxonomy tree? Thanks @cabaf @escorciav

antran89 commented 7 years ago

Thank you for your help. I am writing scripts to extract class names of ActivityNet datasets. You can find here. Because I did not receive any feedback for the request, I close the issue.

escorciav commented 7 years ago

Hi @antran89, sorry for the late reply.

I don't consider that it's critical to provide a text file with the category names. JSON is a standard format, and it is easy to retrieve the classes. Thanks for showing how to do that with Python 😉.

Regarding the question about the taxonomy tree, Fabian explained how to traverse the tree here. Code for visualization might exist, but it may not be polished.

Tord-Zhang commented 6 years ago

@escorciav I just parsed the json file and get the class number id of activitynetv1.2 "Preparing pasta",186 "Bathing dog",90 "Discus throw",92 "Playing field hockey",94 "Grooming horse",95 "Snatch",79 "Preparing salad",96 "Playing harmonica",100 "Chopping wood",110 "Playing saxophone",109 "Washing face",113 "Using the pommel horse",114 "Javelin throw",116 "Spinning",117 "Ping-pong",119 "Making a sandwich",129 "Brushing hair",125 "Playing water polo",130 "Doing step aerobics",230

However, there are only 100 classes in ActivityNet V1.2. The class number id shall be samller than 100. How should I use this id list for training?

escorciav commented 6 years ago

Hi!

The number of categories in v1.2 is 100. Please take a look at the description here.
The ID was generated for another purpose. Feel free to use your own indexing for training purposes.
If you are interested in submitting results to the evaluation server, take a look at the description here for temporal action localization, and here for untrimmed video classification. Please note that we don't use the ID of the activity to parse results. Warmly, Victor

wwdok commented 3 years ago

Thank you for your help. I am writing scripts to extract class names of ActivityNet datasets. You can find here. Because I did not receive any feedback for the request, I close the issue.

Great ! i finally find what i want !

ererdewubudesi commented 1 week ago

Thank you for your help. I am writing scripts to extract class names of ActivityNet datasets. You can find here. Because I did not receive any feedback for the request, I close the issue.

Thanks a lot!!! It‘s helpful.