Implement extended annotations statistics

[AYZemlyakov]

My actions before raising this issue

• Read/searched the docs
• Searched past issues

You need to implement extended annotation statistics, including the following features:

• Download statistics as CSV file.
• Add attributes of labels to output statistics (summarised as number of object, of course)
• Add nodes (number of points if we speak about polygon) to output statistics
• Add a new action to "Task" entity (download statistics over all jobs)

Context

We are a computer vision company and we use CVAT all the time. We definitely need more detailed statistics than we have now. Out typical annotation team is about 20-50 people, each of them annotate their own batches/tasks/jobs and we need detailed statistics including what I have described above. For example, we have 10 classes and about 25 attributes but when I download statistics I can see only classes/objects but I can't see attributes and that's very bad. Also, it's very uncomfortable not being able to download statistics as CSV files.

Some examples:

As you can see, only number of objects/labels/classes (without attributes) is available. You also can not download the statistics as CSV file which is very uncomfortable.

If we have a task of many jobs (for example, 19 ones), you can not see and download the statistics of the task, including all the jobs. It's very uncomfortable, because we usually have many jobs in the tasks.

Your Environment

• Git hash commit (git log -1):
• Docker version docker version (e.g. Docker 17.0.05):
• Are you using Docker Swarm or Kubernetes?
• Operating System and version (e.g. Linux, Windows, MacOS):
• Code example or link to GitHub repo or gist to reproduce problem:
• Other diagnostic information / logs:
  Logs from `cvat` container

Next steps

You may join our Gitter channel for community support.

[Loc-Vo]

Would it be possible to track the assignees (include their working time) on each job? It will be helpful for task audit