This repository includes the non-official pytorch implementation of deep image matting.

• Lower metrics show better performance.
• Training batch=1, images=43100, epochs=25， it takes about 2 days.
• Test maxSize=1600.

• 2019.09.09: conv6 kernel size from 1x1 to 3x3. Get Stage1-SAD=54.4. The performance of stage1 is as good as paper. While using model released before this day, please change the kernel_size=1 and padding=0 of conv6 in file core/net.py.
• 2019.08.24: Fix cv2.dilate and cv2.erode iterations is set default = 1 and set triamp dilate and erode as the test 1k tirmap (k_size:2-5, iterations:5-15). Get Stage1-SAD=57.1.
• 2019.07.05: Training with refine stage, fixed encoder-decoder. Get Stage2-SAD=57.7.
• 2019.06.23: Training with alpha loss and composite loss. Get Stage1-SAD=58.7.
• 2019.06.17: Training trimap generated by erode as well as dialte to balance the 0 and 1 value. Get Stage0-SAD=62.0.
• 2019.04.22: Input image is normalized by mean=[0.485, 0.456, 0.406] and std=[0.229, 0.224, 0.225] and fix crop error. Get Stage0-SAD=69.1.
• 2018.12.14: Initial. Get Stage0-SAD=72.9.

• Python 2.7.12 or 3.6.5
• Pytorch 0.4.0 or 1.0.0
• OpenCV 3.4.3

Download our model to the ./model and run the following command. Then the predict alpha mattes will locate in the folder ./result/example/pred.

python core/demo.py

Please concat author for available.

Download

Download

Run the following command and the composite training and test dataset will locate in Combined_Dataset/Training_set/comp and Combined_Dataset/Test_set/comp, Combined_Dataset is the extracted folder of Adobe-Deep-Image-Matting-Dataset

python tools/composite.py

Run the following command and the pretrained model will locate in ./model/vgg_state_dict.pth

python tools/chg_model.py

Run the following command and start the training

bash train.sh

Run the following command and start the test of Adobe-1k-Composite-Dataset

bash deploy.sh

Please eval with official Matlab Code. and get the SAD, MSE, Grad Conn.

Running model is Stage1-SAD=57.1, please click to view whole images.

Image	Trimap	Pred-Alpha	GT-Alpha