How can a trimap be generated automatically?

[seash]

First of all, thank you for sharing this wonderful Lib. The matting result is perfect when a good trimap is provided. However, how can a good trimap be generated automatically without any manual efforts? Thank you for your help!

[np-csu]

one way to generate trimap is to use erode and dilate function in opencv.

[seash]

Thanks a lot for the recommendation.

[MALIKSHAHID786]

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