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pipeline_tag: image-classification
license: apache-2.0
base_model: timm/tf_efficientnetv2_b2.in1k
library_name: kerasformers
tags:
- keras
- kerasformers
- image-classification
- efficientnetv2
- backbone
- arxiv:2104.00298
- pytorch
- jax
- tf
---
## ***See [our collection](https://huggingface.co/collections/kerasformers/efficientnetv2-6a6d11b8c2748868ecfd4f9e) for all versions of EfficientNetV2.***
# Run EfficientNetV2 with Keras 3: JAX, PyTorch, or TensorFlow
[](https://github.com/IMvision12/KerasFormers) [](https://imvision12.github.io/KerasFormers/classification_backbones/) [](https://huggingface.co/collections/kerasformers/efficientnetv2-6a6d11b8c2748868ecfd4f9e)
# kerasformers/tf_efficientnetv2_b2_in1k
Paper: [EfficientNetV2: Smaller Models and Faster Training (arXiv:2104.00298)](https://arxiv.org/abs/2104.00298) · [HF Papers](https://huggingface.co/papers/2104.00298)
EfficientNetV2 trains faster with Fused-MBConv and progressive learning. Same ImageClassify / Model API as EfficientNet.
For more details on the model, please go to the upstream [model card](https://huggingface.co/timm/tf_efficientnetv2_b2.in1k).
Pure-**Keras 3** conversion of [`timm/tf_efficientnetv2_b2.in1k`](https://huggingface.co/timm/tf_efficientnetv2_b2.in1k) for [kerasformers](https://github.com/IMvision12/KerasFormers). One implementation runs unmodified on **TensorFlow / Torch / JAX**.
This is an **image-classification / backbone** checkpoint (`EfficientNetV2ImageClassify` / `EfficientNetV2Model`).
## ✨ Quick start
```python
import os
os.environ["KERAS_BACKEND"] = "torch" # or "jax" / "tensorflow"
from PIL import Image
import numpy as np
from kerasformers.models.efficientnetv2 import EfficientNetV2ImageClassify, EfficientNetV2Model
model = EfficientNetV2ImageClassify.from_weights("kerasformers/tf_efficientnetv2_b2_in1k")
backbone = EfficientNetV2Model.from_weights(
"kerasformers/tf_efficientnetv2_b2_in1k", as_backbone=True
)
image = Image.open("your_image.jpg").convert("RGB")
image = image.resize((224, 224))
x = np.asarray(image, dtype="float32")[None] # (1, H, W, 3)
print(model(x).shape) # (1, num_classes)
feats = backbone(x)
print(len(feats), [tuple(f.shape) for f in feats])
```
Load any EfficientNetV2 variant the same way with `from_weights("kerasformers/<variant>")`:
| Variant | Hub |
|---|---|
| `tf_efficientnetv2_b0_in1k` | [`kerasformers/tf_efficientnetv2_b0_in1k`](https://huggingface.co/kerasformers/tf_efficientnetv2_b0_in1k) |
| `tf_efficientnetv2_b1_in1k` | [`kerasformers/tf_efficientnetv2_b1_in1k`](https://huggingface.co/kerasformers/tf_efficientnetv2_b1_in1k) |
| `tf_efficientnetv2_b2_in1k` | [`kerasformers/tf_efficientnetv2_b2_in1k`](https://huggingface.co/kerasformers/tf_efficientnetv2_b2_in1k) |
| `tf_efficientnetv2_b3_in1k` | [`kerasformers/tf_efficientnetv2_b3_in1k`](https://huggingface.co/kerasformers/tf_efficientnetv2_b3_in1k) |
| `tf_efficientnetv2_b3_in21k_ft_in1k` | [`kerasformers/tf_efficientnetv2_b3_in21k_ft_in1k`](https://huggingface.co/kerasformers/tf_efficientnetv2_b3_in21k_ft_in1k) |
| `tf_efficientnetv2_l_in1k` | [`kerasformers/tf_efficientnetv2_l_in1k`](https://huggingface.co/kerasformers/tf_efficientnetv2_l_in1k) |
| `tf_efficientnetv2_l_in21k` | [`kerasformers/tf_efficientnetv2_l_in21k`](https://huggingface.co/kerasformers/tf_efficientnetv2_l_in21k) |
| `tf_efficientnetv2_l_in21k_ft_in1k` | [`kerasformers/tf_efficientnetv2_l_in21k_ft_in1k`](https://huggingface.co/kerasformers/tf_efficientnetv2_l_in21k_ft_in1k) |
| `tf_efficientnetv2_m_in1k` | [`kerasformers/tf_efficientnetv2_m_in1k`](https://huggingface.co/kerasformers/tf_efficientnetv2_m_in1k) |
| `tf_efficientnetv2_m_in21k` | [`kerasformers/tf_efficientnetv2_m_in21k`](https://huggingface.co/kerasformers/tf_efficientnetv2_m_in21k) |
| `tf_efficientnetv2_m_in21k_ft_in1k` | [`kerasformers/tf_efficientnetv2_m_in21k_ft_in1k`](https://huggingface.co/kerasformers/tf_efficientnetv2_m_in21k_ft_in1k) |
| `tf_efficientnetv2_s_in1k` | [`kerasformers/tf_efficientnetv2_s_in1k`](https://huggingface.co/kerasformers/tf_efficientnetv2_s_in1k) |
| `tf_efficientnetv2_s_in21k` | [`kerasformers/tf_efficientnetv2_s_in21k`](https://huggingface.co/kerasformers/tf_efficientnetv2_s_in21k) |
| `tf_efficientnetv2_s_in21k_ft_in1k` | [`kerasformers/tf_efficientnetv2_s_in21k_ft_in1k`](https://huggingface.co/kerasformers/tf_efficientnetv2_s_in21k_ft_in1k) |
| `tf_efficientnetv2_xl_in21k` | [`kerasformers/tf_efficientnetv2_xl_in21k`](https://huggingface.co/kerasformers/tf_efficientnetv2_xl_in21k) |
| `tf_efficientnetv2_xl_in21k_ft_in1k` | [`kerasformers/tf_efficientnetv2_xl_in21k_ft_in1k`](https://huggingface.co/kerasformers/tf_efficientnetv2_xl_in21k_ft_in1k) |
## Tips
- Set `KERAS_BACKEND` **before** importing Keras / kerasformers.
- `EfficientNetV2ImageClassify` returns class logits; `EfficientNetV2Model` returns features (`as_backbone=True` for multi-scale stages).
- See [docs](https://imvision12.github.io/KerasFormers/classification_backbones/) and [Loading Weights](https://imvision12.github.io/KerasFormers/loading_weights/).
- Upstream / timm checkpoints: `EfficientNetV2ImageClassify.from_weights("hf:timm/tf_efficientnetv2_b2.in1k")`.
## Special Thanks
A huge thank you to the EfficientNetV2 authors and the timm / Hub communities for creating and releasing these models.
License: see YAML `license` (usually matches the upstream checkpoint).
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