How is re_coco_gt calculated? Difference between re_coco_det and re_coco_gt

[statech]

Hello,

I know that both of re_coco_det and re_coco_gt have the following two fields

• img_feat
• img_bb

And img_bb in re_coco_gt is ground-truth bounding boxes while in re_coco_det, it is predicted bounding boxes from Faster-RCNN. What about img_feat? How is img_feat calculated in re_coco_gt and re_coco_det, respectively?

Thanks for any input!