{}
AM-RADIO: Reduce All Domains Into One
Mike Ranzinger, Greg Heinrich, Jan Kautz, Pavlo Molchanov
HuggingFace Hub
You can pull the model from a Python script:
import torch
from PIL import Image
from transformers import AutoModel, CLIPImageProcessor
hf_repo = "nvidia/RADIO-B"
image_processor = CLIPImageProcessor.from_pretrained(hf_repo)
model = AutoModel.from_pretrained(hf_repo, trust_remote_code=True)
model.eval().cuda()
image = Image.open('./assets/radio.png').convert('RGB')
pixel_values = image_processor(images=image, return_tensors='pt', do_resize=True).pixel_values
pixel_values = pixel_values.cuda()
summary, features = model(pixel_values)
Usage
RADIO will return a tuple with two tensors. The summary is similar to the cls_token in ViT and is meant to represent the general concept of the entire image. It has shape $(B,C)$ with $B$ being the batch dimension, and $C$ being some number of channels. The spatial_features represent more localized content which should be suitable for dense tasks such as semantic segmentation, or for integration into an LLM. It has shape $(B,T,D)$ with $T$ being the flattened spatial tokens, and $D$ being the channels for spatial features. Note that $C \neq D$ in general.
Converting to a spatial tensor format can be done using the downsampling size of the model, combined with the input tensor shape. For 'radio_v1', the patch size is 14.
from einops import rearrange
spatial_features = rearrange(spatial_features, 'b (h w) d -> b d h w', h=x.shape[-2] // patch_size, w=x.shape[-1] // patch_size)
The resulting tensor will have shape $(B,D,H,W)$, as is typically seen with computer vision models.
RADIOv2.5 Notes
See the RADIOv2.5 technical report.
License
RADIO code and weights are released under the NSCLv1 License.
Citing RADIO
If you find this repository useful, please consider giving a star and citation:
@misc{ranzinger2023amradio,
title={AM-RADIO: Agglomerative Model -- Reduce All Domains Into One},
author={Mike Ranzinger and Greg Heinrich and Jan Kautz and Pavlo Molchanov},
year={2023},
eprint={2312.06709},
archivePrefix={arXiv},
primaryClass={cs.CV}
}