TIPS — B/14 (v1)
TIPS (Text-Image Pre-training with Spatial awareness, ICLR 2025) is a family of contrastive vision-language models that produce spatially rich image features aligned with text embeddings. This is the original (v1) B/14 release with 86M vision params and 110M text params, converted from the official checkpoints.
| Variant | Vision params | Text params | Embed dim | Resolution |
|---|---|---|---|---|
| S/14 | 22M | 34M | 384 | 448 |
| B/14 | 86M | 110M | 768 | 448 |
| L/14 | 304M | 184M | 1024 | 448 |
| So400m/14 | 413M | 448M | 1152 | 448 |
| g/14 | 1.1B | 389M | 1536 | 448 |
| g/14 low-res | 1.1B | 389M | 1536 | 224 |
Usage
pip install transformers torch torchvision sentencepiece scikit-learn requests
Load the model
from transformers import AutoModel
model = AutoModel.from_pretrained("google/tipsv1-b14", trust_remote_code=True)
model.eval()
Encode images
Images should be tensors in [0, 1] range (just ToTensor(), no ImageNet normalization).
import requests
from PIL import Image
from torchvision import transforms
url = "https://huggingface.co/spaces/google/TIPSv2/resolve/main/examples/zeroseg/pascal_context_00049_image.png"
image = Image.open(requests.get(url, stream=True).raw).convert("RGB")
transform = transforms.Compose([transforms.Resize((448, 448)), transforms.ToTensor()])
pixel_values = transform(image).unsqueeze(0)
out = model.encode_image(pixel_values)
print(out.cls_token.shape) # (1, 1, 768) — global image embedding
print(out.patch_tokens.shape) # (1, 1024, 768) — per-patch spatial features
The second CLS token (out.register_tokens) was trained on synthetic captions; the first (out.cls_token) on web alt-text, and is the one aligned with the text tower.
Encode text
text_emb = model.encode_text(["a photo of a bus", "a photo of a dog"])
print(text_emb.shape) # (2, 768) — one embedding per query
Zero-shot classification
import torch.nn.functional as F
classes = ["bus", "car", "dog", "cat"]
cls = F.normalize(out.cls_token[:, 0, :], dim=-1)
text_emb = F.normalize(model.encode_text(classes), dim=-1)
similarity = cls @ text_emb.T
print(classes[similarity.argmax()]) # predicted class
Visualize spatial features
import numpy as np
from sklearn.decomposition import PCA
feat = out.patch_tokens[0].detach().cpu().numpy()
rgb = PCA(n_components=3, whiten=True).fit_transform(feat).reshape(32, 32, 3)
rgb = 1 / (1 + np.exp(-2.0 * rgb)) # sigmoid for [0, 1] range with good contrast
Model details
- ViT-B/14 vision encoder (12 layers, patch size 14, two CLS tokens) + 12-layer transformer text encoder
- Native resolution 448; other patch-multiple resolutions work via positional-embedding interpolation
- Preprocessing: images to
[0, 1], no normalization; SentencePiece tokenizer, lowercased, max 64 tokens
License
Apache 2.0
Citation
@inproceedings{maninis2025tips,
title = {{TIPS: Text-Image Pretraining with Spatial Awareness}},
author = {Maninis, Kevis-Kokitsi and Chen, Kaifeng and Ghosh, Soham and Karpur, Arjun and Chen, Koert and Xia, Ye and Cao, Bingyi and Salz, Daniel and Han, Guangxing and Dlabal, Jan and Gnanapragasam, Dan and Seyedhosseini, Mojtaba and Zhou, Howard and Araujo, Andre},
booktitle = {International Conference on Learning Representations (ICLR)},
year = {2025},
url = {https://arxiv.org/abs/2410.16512}
}