I don't think that's current. Certainly the object detection models work on bigger images, and the datasets they're pretrained on e.g. coco are not 224x224. I t

I don't think that's current. Certainly the object detection models work on bigger images, and the datasets they're pretrained on e.g. coco are not 224x224. I think standard models pretrained on imagenet, like the Resnets usually have everything resized to 224x224, and so they favor this kind of scaling.