--- pipeline_tag: image-classification license: apache-2.0 base_model: facebook/levit-192 library_name: zeromodels tags: - keras - zeromodels - image-classification - vit - backbone - levit - arxiv:2104.01136 - pytorch - jax - tf --- ## ***See [our collection](https://huggingface.co/collections/zeromodels/levit-6a937f8760837c24b7a51d25) for all versions of LeViT.*** # Run LeViT with Keras 3: JAX, PyTorch, or TensorFlow [![GitHub](https://img.shields.io/badge/GitHub-ZeroModels-black?logo=github)](https://github.com/IMvision12/ZeroModels) [![Docs](https://img.shields.io/badge/Docs-Backbones-blue)](https://imvision12.github.io/ZeroModels/classification_backbones/) [![Collection](https://img.shields.io/badge/HF-LeViT%20collection-yellow)](https://huggingface.co/collections/zeromodels/levit-6a937f8760837c24b7a51d25) # zeromodels/levit-192 Paper: [LeViT: a Vision Transformer in ConvNet's Clothing for Faster Inference (arXiv:2104.01136)](https://arxiv.org/abs/2104.01136) · [HF Papers](https://huggingface.co/papers/2104.01136) LeViT is a hybrid convolution/transformer image classifier built for fast inference: a four-layer conv stem downsamples the image 16x, then three attention stages (each adding a learnable 2D relative-position bias) run over the tokens, with a BatchNorm fused into every linear layer and Hardswish activations. The released checkpoints are distilled - a second classification head is averaged with the first at inference. Wider LeViT (hidden sizes 192/288/384). For more details on the model, please go to Meta's original [model card](https://huggingface.co/facebook/levit-192). Pure-**Keras 3** conversion of [`facebook/levit-192`](https://huggingface.co/facebook/levit-192) for [zeromodels](https://github.com/IMvision12/ZeroModels). One implementation runs unmodified on **TensorFlow / Torch / JAX**. ## ✨ Quick start ```python import os os.environ["KERAS_BACKEND"] = "torch" # or "jax" / "tensorflow" from PIL import Image from zeromodels.models.levit import LevitImageClassify, LevitModel, LevitImageProcessor model = LevitImageClassify.from_weights("zeromodels/levit-192") processor = LevitImageProcessor.from_weights("zeromodels/levit-192") image = Image.open("your_image.jpg").convert("RGB") pixels = processor(image) # resize + normalize (normalization lives in the processor) logits = model(pixels, training=False) print(logits.shape) # (1, num_classes) # Feature extraction: the backbone without the classifier head backbone = LevitModel.from_weights("zeromodels/levit-192") features = backbone(pixels, training=False) ``` Load any LeViT variant the same way with `from_weights("zeromodels/")`: | Variant | Hub | |---|---| | `levit-128S` | [`zeromodels/levit-128S`](https://huggingface.co/zeromodels/levit-128S) | | `levit-128` | [`zeromodels/levit-128`](https://huggingface.co/zeromodels/levit-128) | | `levit-192` | [`zeromodels/levit-192`](https://huggingface.co/zeromodels/levit-192) | | `levit-256` | [`zeromodels/levit-256`](https://huggingface.co/zeromodels/levit-256) | | `levit-384` | [`zeromodels/levit-384`](https://huggingface.co/zeromodels/levit-384) | ## Tips - Set `KERAS_BACKEND` **before** importing Keras / zeromodels. - ImageNet normalization is baked into the model, so pass raw `[0, 255]` pixels. - Preprocess by resizing the shortest edge to 256 and center-cropping 224 (shown above) to match the reference; a plain `resize((224, 224))` is close and also works. - `LevitImageClassify` averages the two distillation heads internally; `LevitModel.from_weights(...)` gives the backbone (the final token sequence, no head). - See [Classification backbones](https://imvision12.github.io/ZeroModels/classification_backbones/) and [Loading Weights](https://imvision12.github.io/ZeroModels/loading_weights/). - Community / upstream safetensors still work via the `hf:` prefix, e.g. `LevitImageClassify.from_weights("hf:facebook/levit-192")`. ## Special Thanks A huge thank you to the Meta AI LeViT authors for creating and releasing these models. License: Apache 2.0.