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PP-TSM

Contents

Introduction

We optimized TSM model and proposed PP-TSM in this repo. Without increasing the number of parameters, the accuracy of TSM was significantly improved in UCF101 and Kinetics-400 datasets. Please refer to Tricks on PP-TSM for more details.

Version Sampling method Top1
Ours (distill) Dense 76.16
Ours Dense 75.69
mmaction2 Dense 74.55
mit-han-lab Dense 74.1
Version Sampling method Top1
Ours (distill) Uniform 75.11
Ours Uniform 74.54
mmaction2 Uniform 71.90
mit-han-lab Uniform 71.16

Data

Please refer to Kinetics400 data download and preparation doc k400-data

Please refer to UCF101 data download and preparation doc ucf101-data

Train

Train on kinetics-400

download pretrain-model

Please download ResNet50_vd_ssld_v2 as pretraind model:

wget https://videotag.bj.bcebos.com/PaddleVideo/PretrainModel/ResNet50_vd_ssld_v2_pretrained.pdparams

and add path to MODEL.framework.backbone.pretrained in config file as：

MODEL:
    framework: "Recognizer2D"
    backbone:
        name: "ResNetTweaksTSM"
        pretrained: your weight path

Start training

  • Train PP-TSM on kinetics-400 scripts:
python3.7 -B -m paddle.distributed.launch --gpus="0,1,2,3,4,5,6,7"  --log_dir=log_pptsm  main.py  --validate -c configs/recognition/pptsm/pptsm_k400_frames_uniform.yaml
  • Train PP-TSM on kinetics-400 video data using scripts:
python3.7 -B -m paddle.distributed.launch --gpus="0,1,2,3,4,5,6,7"  --log_dir=log_pptsm  main.py  --validate -c configs/recognition/pptsm/pptsm_k400_videos_uniform.yaml
  • AMP is useful for speeding up training:
export FLAGS_conv_workspace_size_limit=800 #MB
export FLAGS_cudnn_exhaustive_search=1
export FLAGS_cudnn_batchnorm_spatial_persistent=1

python3.7 -B -m paddle.distributed.launch --gpus="0,1,2,3,4,5,6,7"  --log_dir=log_pptsm  main.py  --amp --validate -c configs/recognition/pptsm/pptsm_k400_frames_uniform.yaml
  • Train PP-TSM on kinetics-400 with dense sampling:
python3.7 -B -m paddle.distributed.launch --gpus="0,1,2,3,4,5,6,7"  --log_dir=log_pptsm  main.py  --validate -c configs/recognition/pptsm/pptsm_k400_frames_dense.yaml

Test

  • For uniform sampling, test accuracy can be found in training-logs by search key word best, such as:
Already save the best model (top1 acc)0.7454
  • For dense sampling, test accuracy can be obtained using scripts:
python3 main.py --test -c configs/recognition/pptsm/pptsm_k400_frames_dense.yaml -w output/ppTSM/ppTSM_best.pdparams

Accuracy on Kinetics400:

backbone distill Sampling method num_seg target_size Top-1 checkpoints
ResNet50 False Uniform 8 224 74.54 ppTSM_k400_uniform.pdparams
ResNet50 False Dense 8 224 75.69 ppTSM_k400_dense.pdparams
ResNet50 True Uniform 8 224 75.11 ppTSM_k400_uniform_distill.pdparams
ResNet50 True Dense 8 224 76.16 ppTSM_k400_dense_distill.pdparams

Inference

export inference model

To get model architecture file ppTSM.pdmodel and parameters file ppTSM.pdiparams, use:

python3.7 tools/export_model.py -c configs/recognition/pptsm/pptsm_k400_frames_uniform.yaml \
                                -p data/ppTSM_k400_uniform.pdparams \
                                -o inference/ppTSM

infer

python3.7 tools/predict.py --input_file data/example.avi \
                           --config configs/recognition/pptsm/pptsm_k400_frames_uniform.yaml \
                           --model_file inference/ppTSM/ppTSM.pdmodel \
                           --params_file inference/ppTSM/ppTSM.pdiparams \
                           --use_gpu=True \
                           --use_tensorrt=False

example of logs:

Current video file: data/example.avi
	top-1 class: 5
	top-1 score: 0.9907386302947998

we can get the class name using class id and map file data/k400/Kinetics-400_label_list.txt. The top1 prediction of data/example.avi is archery.

Reference