timm documentation
HRNet
HRNet
Category: CNN · Code: timm/models/hrnet.py · Architectures: 11 · Pretrained weights: 14 (14 with ImageNet-1k results)
High-Resolution Networks keep a high resolution branch through the whole network and add lower resolution branches in parallel, repeatedly exchanging information between them.
Papers
- Deep High-Resolution Representation Learning for Visual Recognition
- Beyond Self-Supervision: A Simple Yet Effective Network Distillation Alternative to Improve Backbones
Usage
See the Quickstart for loading pretrained weights, image preprocessing and fine-tuning, and Feature Extraction for using the models as backbones.
>>> import timm
>>> model = timm.create_model('hrnet_w18.ms_aug_in1k', pretrained=True)
>>> data_config = timm.data.resolve_model_data_config(model)Model API support
| Feature | HighResolutionNet |
|---|---|
features_only=True feature maps | ✓ (strides 2, 4, 8, 16, 32) |
forward_intermediates() | ✗ |
prune_intermediate_layers() | ✗ |
| Any input size, no changes needed | ✓ |
set_input_size() | – |
dynamic_img_size=True | – |
set_grad_checkpointing() | ✗ |
Layer-wise LR decay (group_matcher()) | ✓ |
reset_classifier() | ✓ |
✓ supported, ✓ (square) works for square sizes only, ✗ not supported, – not needed (the model already accepts any input
size). Checked by running each feature on a randomly initialized model (HighResolutionNet with hrnet_w18_small at
224), other architectures of the same class are expected to behave the same. See the Model API page for
details.
Architectures
| Architecture | Params (M) | GMACs | Input size | Pretrained weights |
|---|---|---|---|---|
hrnet_w18 | 21.30 | 4.32 | 224 | 2 |
hrnet_w18_small | 13.19 | 1.61 | 224 | 2 |
hrnet_w18_small_v2 | 15.60 | 2.62 | 224 | 2 |
hrnet_w18_ssld | 21.30 | 4.32 | 224 | 1 |
hrnet_w30 | 37.71 | 8.15 | 224 | 1 |
hrnet_w32 | 41.23 | 8.97 | 224 | 1 |
hrnet_w40 | 57.56 | 12.75 | 224 | 1 |
hrnet_w44 | 67.06 | 14.94 | 224 | 1 |
hrnet_w48 | 77.47 | 17.34 | 224 | 1 |
hrnet_w48_ssld | 77.47 | 17.34 | 224 | 1 |
hrnet_w64 | 128.06 | 28.97 | 224 | 1 |
GMACs and parameter counts are for the default input size and classifier of each architecture, from the benchmark results.
Pretrained weights
Top-1 is ImageNet-1k validation accuracy from results-imagenet.csv at
the listed eval size, - if the weight has no ImageNet-1k result (e.g. pretraining or image-text weights). Classes is the
size of the pretrained classifier, none for weights without one.
Weights are grouped by source: the paper or origin given in the pretrained config, else a Hub organization other than timm, else the first part of the pretrained tag (architecture.tag). Sources with a single weight are listed under
other.
ms tags
| Weight | Input size | Top-1 (%) | Eval size | Classes | License | Hub |
|---|---|---|---|---|---|---|
hrnet_w18.ms_aug_in1k | 224 | 78.110 | 224 | 1000 | mit | timm |
hrnet_w18.ms_in1k | 224 | 76.770 | 224 | 1000 | mit | timm |
hrnet_w18_small.ms_in1k | 224 | 72.340 | 224 | 1000 | mit | timm |
hrnet_w18_small_v2.ms_in1k | 224 | 75.094 | 224 | 1000 | mit | timm |
hrnet_w30.ms_in1k | 224 | 78.202 | 224 | 1000 | mit | timm |
hrnet_w32.ms_in1k | 224 | 78.452 | 224 | 1000 | mit | timm |
hrnet_w40.ms_in1k | 224 | 78.928 | 224 | 1000 | mit | timm |
hrnet_w44.ms_in1k | 224 | 78.890 | 224 | 1000 | mit | timm |
hrnet_w48.ms_in1k | 224 | 79.328 | 224 | 1000 | mit | timm |
hrnet_w64.ms_in1k | 224 | 79.458 | 224 | 1000 | mit | timm |
gluon tags
| Weight | Input size | Top-1 (%) | Eval size | Classes | License | Hub |
|---|---|---|---|---|---|---|
hrnet_w18_small.gluon_in1k | 224 | 73.934 | 224 | 1000 | apache-2.0 | timm |
hrnet_w18_small_v2.gluon_in1k | 224 | 78.202 | 224 | 1000 | apache-2.0 | timm |
paddle tags
| Weight | Input size | Top-1 (%) | Eval size | Classes | License | Hub |
|---|---|---|---|---|---|---|
hrnet_w18_ssld.paddle_in1k | 224 (test 288) | 82.052 | 288 | 1000 | mit | timm |
hrnet_w48_ssld.paddle_in1k | 224 (test 288) | 84.484 | 288 | 1000 | mit | timm |