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pytorch-priv

Pytorch implementation for Classification, Semantic Segmentation, Pose Estimation and Object Detection

  • Image Classification
  • Semantic Segmentation (progressing...)
  • Object Detection (progressing...)
  • Pose Estimation (progressing...)

Install

Training and Evaluating

For training:

  1. Modify the .yml file in ./cfg/imagenet/air50-1x64d:

    • the ckpt is used to save the checkpoints
    • if you want use cosine learning rate, please set cosine_lr: True, then lr_schedule and gamma will not be used
    • for resuming training, add the model.pth.tar to resume: and modify start_epoch
    • rotation, pixel_jitter and grayscale are extra data augmentation, recommended for training complex networks only
  2. Train a network:

    python cls_train.py --cfg ./cfg/imagenet/air50_1x64d.yml 
    

    2.1 Training with mixup (optional):

    python tools/cls_mixup_train.py --cfg ./cfg/imagenet/air50_1x64d_mixup.yml 
    

    for better performace:

    • double the epochs for training with mixup
    • a few extra epochs with no mixup after the process above

    2.2 Ttraining cifar dataset (optional):

    python tools/cls_cifar.py --cfg ./cfg/cifar10/resnext29_8x64d.yml
    

    or with mixup (usually weight_decay: 0.0001):

    python tools/cls_mixup_cifar.py --cfg ./cfg/cifar10/resnext29_8x64d_mixup.yml
    

For evaluating:

  1. Modify the .yml file in ./cfg/imagenet/air50-1x64d:

    • add the model.pth.tar to pretrained:
    • set the evaluate: True
  2. Evaluate a network:

    python train_cls.py --cfg ./cfg/imagenet/air50_1x64d.yml 
    

For evaluating image by image:

  1. Modify the tools/cls_eval.py file

  2. Evaluate a network:

    python tools/cls_eval.py
    

Features

Results

ImageNet1k

Single-crop (224x224) validation error rate is reported.

Network                 Flops (M) Params (M) Top-1 Error (%) Top-5 Error (%) Speed (im/sec)
resnet50-1x64d 4342.1 25.5 23.52 7.01 157.1
resnet101-1x64d 8039.0 44.5 22.18 6.23 91.7
  • Speed test on single Titan xp GPU with batch_size: 1.

Cifar10 & Cifar100

Validation error rate is reported.

Network                 Flops (M) Params (M) Cifar10 Top-1
Error (%)
Cifar100 Top-1
Error (%)
resnext29-8x64d 5387.2 34.4 3.73 18.55
resnext29-8x64d-mixup 5387.2 34.4 2.90 --
resnext29-8x64d-re       5387.2   34.4       3.55                       --                          

License

pytorch-priv is released under the MIT License (refer to the LICENSE file for details).

Contribute

Feel free to create a pull request if you find any bugs or you want to contribute (e.g., more datasets and more network structures).

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