Inference scale on DINO model

[truong2710-cyber]

Hi everyone, I have a trained DINO-5scale model on my custom dataset and I want to infer on it.

But when I upscale all of the images to 2x, I notice that the AP score drop heavily. My dataset contains mainly people and vehicles from a camera. In contrast, I did the same upscaling with YOLOv5 or Faster-RCNN and observed the higher AP score when upscaling.
I think that it is due to the nature of Transformer-based model, but I'm not sure about that.
So why that happens? Thank you.

[pof1423]

i also experienced same! when i down scaling with cv2, the map is almost close to 0. someone explain it please !!

[truong2710-cyber]

has anyone known the reason yet :(((