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Update log
- 2020.12.10 Project structure adjustment, the previous code has been deleted, the adjustment will be re-uploaded code
- 2021.04.09 Re-upload the code, "V1 Commit"
- 2021.04.22 update torch distributed training
- Ongoing update .....
1. Display (Cityscapes)
- Using model DDRNet 1525 test sets, official MIOU =78.4069%
Average results
|
Class results1
|
Class results2
|
Class results3
|
- Comparison of the original and predicted images
origin
|
label
|
predict
|
2. Install
pip install -r requirements.txt
Experimental environment:
- Ubuntu 16.04 Nvidia-Cards >= 1
- python==3.6.5
- See Dependency Installation Package for details in requirement.txt
3. Model
All the modeling is done in builders/model_builder.py
- FCN
- FCN_ResNet
- SegNet
- UNet
- BiSeNet
- BiSeNetV2
- PSPNet
- DeepLabv3_plus
- HRNet
- DDRNet
| Model | Backbone | Val mIoU | Test mIoU | Imagenet Pretrain | Pretrained Model |
|---|---|---|---|---|---|
| PSPNet | ResNet 50 | 76.54% | - | √ | PSPNet |
| DeeplabV3+ | ResNet 50 | 77.78% | - | √ | DeeplabV3+ |
| DDRNet23_slim | - | DDRNet23_slim_imagenet | |||
| DDRNet23 | - | DDRNet23_imagenet | |||
| DDRNet39 | - | 79.63% | - | DDRNet39_imagenet | DDRNet39 |
| Updating more model....... |
4. Data preprocessing
This project enables you to expose data sets: Cityscapes、ISPRS
The data set is uploaded later .....
Cityscapes data set preparation is shown here:
4.1 Download the dataset
Download the dataset from the link on the website, You can get *leftImg8bit.png suffix of original image under folder leftImg8bit, a) *color.png、b) *labelIds.png、c) *instanceIds.png suffix of fine labeled image under folder gtFine.
*leftImg8bit.png : the origin picture
a) *color.png : the class is encoded by its color
b) *labelIds.png : the class is encoded by its ID
c) *instanceIds.png : the class and the instance are encoded by an instance ID
4.2 Onehot encoding of label image
The real label gray scale image Onehot encoding used by the semantic segmentation task is 0-18, so the label needs to be encoded. Using scripts dataset/cityscapes/cityscapes_scripts/process_cityscapes.py to process the image and get the result *labelTrainIds.png. process_cityscapes.py usage: Modify 486 lines `Cityscapes_path'is the path to store your own data.
- Comparison of original image, color label image and gray label image (0-18)
***_leftImg8bit
|
***_gtFine_color
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***_gtFine_labelTrainIds
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- Local storage path display
/data/open_data/cityscapes/:
data
|--open_data
|--cityscapes
|--leftImg8bit
|--train
|--cologne
|--*******
|--val
|--*******
|--test
|--*******
|--gtFine
|--train
|--cologne
|--*******
|--val
|--*******
|--test
|--*******
4.3 Generate image path
- Generate a txt containing the image path
Use scriptdataset/generate_txt.pyto generate the pathtxtfile containing the original image and labels. A total of 3txtfiles will be generated:cityscapes_train_list.txt、cityscapes_val_list.txt、cityscapes_test_list.txt, and copy the three files to the dataset root directory.
data
|--open_data
|--cityscapes
|--cityscapes_train_list.txt
|--cityscapes_val_list.txt
|--cityscapes_test_list.txt
|--leftImg8bit
|--train
|--cologne
|--*******
|--val
|--*******
|--test
|--*******
|--gtFine
|--train
|--cologne
|--*******
|--val
|--*******
|--test
|--*******
- The contents of the
txtare shown as follows:
leftImg8bit/train/cologne/cologne_000000_000019_leftImg8bit.png gtFine/train/cologne/cologne_000000_000019_gtFine_labelTrainIds.png
leftImg8bit/train/cologne/cologne_000001_000019_leftImg8bit.png gtFine/train/cologne/cologne_000001_000019_gtFine_labelTrainIds.png
..............
- The format of the
txtare shown as follows:
origin image path + the separator '\t' + label path + the separator '\n'
TODO.....
5. How to train
sh train.sh
5.1 Parameters
python -m torch.distributed.launch --nproc_per_node=2 \
train.py --model PSPNet_res50 --out_stride 8 \
--max_epochs 200 --val_epochs 20 --batch_size 4 --lr 0.01 --optim sgd --loss ProbOhemCrossEntropy2d \
--base_size 768 --crop_size 768 --tile_hw_size 768,768 \
--root '/data/open_data' --dataset cityscapes --gpus_id 1,2
6. How to validate
sh predict.sh
3 Jun 22, 2022
259 Dec 25, 2022
53 Dec 16, 2022
3 Aug 04, 2022
4.3k Jan 07, 2023
2 Dec 08, 2021
831 Dec 29, 2022
15 Nov 27, 2021
19 Dec 05, 2022
16 Nov 04, 2022
3 Dec 16, 2021
338 Dec 29, 2022
114 Dec 27, 2022
4 Dec 29, 2021
722 Jan 08, 2023
25 Nov 09, 2022
79 Jan 06, 2023
2 Oct 24, 2022
230 Dec 31, 2022
11 Nov 19, 2022