Using detectron 2 to show the performance metrics

[ck12780]

Hi, i am a newbie for coding. I am using detectron2 and pytorch for doing a custom object detection.

So, above image is the evaluation result for my training. How to code for the accuracy, precision, F1 score and confusion matric.
The training code I take from
https://github.com/ahmad12hamdan99/Rovers_vs_Cars/blob/main/detectron2.ipynb