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HRNet

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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

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

FeatureHighResolutionNet
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

ArchitectureParams (M)GMACsInput sizePretrained weights
hrnet_w1821.304.322242
hrnet_w18_small13.191.612242
hrnet_w18_small_v215.602.622242
hrnet_w18_ssld21.304.322241
hrnet_w3037.718.152241
hrnet_w3241.238.972241
hrnet_w4057.5612.752241
hrnet_w4467.0614.942241
hrnet_w4877.4717.342241
hrnet_w48_ssld77.4717.342241
hrnet_w64128.0628.972241

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

WeightInput sizeTop-1 (%)Eval sizeClassesLicenseHub
hrnet_w18.ms_aug_in1k22478.1102241000mittimm
hrnet_w18.ms_in1k22476.7702241000mittimm
hrnet_w18_small.ms_in1k22472.3402241000mittimm
hrnet_w18_small_v2.ms_in1k22475.0942241000mittimm
hrnet_w30.ms_in1k22478.2022241000mittimm
hrnet_w32.ms_in1k22478.4522241000mittimm
hrnet_w40.ms_in1k22478.9282241000mittimm
hrnet_w44.ms_in1k22478.8902241000mittimm
hrnet_w48.ms_in1k22479.3282241000mittimm
hrnet_w64.ms_in1k22479.4582241000mittimm

gluon tags

WeightInput sizeTop-1 (%)Eval sizeClassesLicenseHub
hrnet_w18_small.gluon_in1k22473.9342241000apache-2.0timm
hrnet_w18_small_v2.gluon_in1k22478.2022241000apache-2.0timm

paddle tags

WeightInput sizeTop-1 (%)Eval sizeClassesLicenseHub
hrnet_w18_ssld.paddle_in1k224 (test 288)82.0522881000mittimm
hrnet_w48_ssld.paddle_in1k224 (test 288)84.4842881000mittimm
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