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HRNet-Semantic-Segmentation

hrnet/hrnet-semantic-segmentation/README.md

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HRNet-Semantic-Segmentation

This repo implemtents HRNet-Semantic-Segmentation-v1.1 and HRNet-Semantic-Segmentation-OCR.

How to Run

For HRNet-Semantic-Segmentation-v1.1

  1. generate .wts, use config experiments/cityscapes/seg_hrnet_w48_train_512x1024_sgd_lr1e-2_wd5e-4_bs_12_epoch484.yaml and pretrained weight hrnet_w48_cityscapes_cls19_1024x2048_trainset.pth as example. change PRETRAINED in experiments/cityscapes/seg_hrnet_w48_train_512x1024_sgd_lr1e-2_wd5e-4_bs_12_epoch484.yaml to "".
cp gen_wts.py $HRNET--Semantic-Segmentation-PROJECT-ROOT/tools
cd $HRNET--Semantic-Segmentation-PROJECT-ROOT
python tools/gen_wts.py --cfg experiments/cityscapes/seg_hrnet_w48_train_512x1024_sgd_lr1e-2_wd5e-4_bs_12_epoch484.yaml --ckpt_path hrnet_w48_cityscapes_cls19_1024x2048_trainset.pth --save_path hrnet_w48.wts
cp hrnet_w48.wts $HRNET-TENSORRT-ROOT
cd $HRNET-TENSORRT-ROOT
  1. cmake and make
mkdir build
cd build
cmake ..
make

first serialize model to plan file

./hrnet -s [.wts] [.engine] [small or 18 or 32 or 48] # small for W18-Small-v2, 18 for W18, etc.

such as

./hrnet -s ../hrnet_w48.wts ./hrnet_w48.engine 48

then deserialize plan file and run inference

./hrnet -d  [.engine] [image dir]

such as

./hrnet -d  ./hrnet_w48.engine ../samples

For HRNet-Semantic-Segmentation-OCR

  1. generate .wts, use config experiments/cityscapes/seg_hrnet_ocr_w48_train_512x1024_sgd_lr1e-2_wd5e-4_bs_12_epoch484.yaml and pretrained weight hrnet_ocr_cs_8162_torch11.pth as example. change PRETRAINED in experiments/cityscapes/seg_hrnet_ocr_w48_train_512x1024_sgd_lr1e-2_wd5e-4_bs_12_epoch484.yaml to "".
cp gen_wts.py $HRNET-OCR-TRAIN-PROJECT-ROOT/tools
cd $HRNET-OCR-PROJECT-ROOT
python tools/gen_wts.py --cfg experiments/cityscapes/seg_hrnet_ocr_w48_train_512x1024_sgd_lr1e-2_wd5e-4_bs_12_epoch484.yaml --ckpt_path hrnet_ocr_cs_8162_torch11.pth --save_path hrnet_ocr_w48.wts
cp hrnet_ocr_w48.wts $HRNET-OCR-TENSORRT-ROOT
cd $HRNET-OCR-TENSORRT-ROOT
  1. cmake and make
mkdir build
cd build
cmake ..
make

first serialize model to plan file

./hrnet_ocr -s [.wts] [.engine] [18 or 32 or 48]

such as

./hrnet_ocr -s ../hrnet_ocr_w48.wts ./hrnet_ocr_w48.engine 48

then deserialize plan file and run inference

./hrnet_ocr -d  [.engine] [image dir]

such as

./hrnet_ocr -d  ./hrnet_ocr_w48.engine ../samples

Result

TRT Result:

pytorch result:

Note

  • Some source codes are changed for simplicity. But the original model can still be used.

    All "upsample" op in source code are changed to mode='bilinear', align_corners=True

  • Image preprocessing operation and postprocessing operation are put into Trt Engine.

  • Zero-copy technology (CPU/GPU memory copy) is used.