You may bring it to the foreground and supply the necessary input.
您可以将它放到前台并提供必要的输入。
Bring it to the foreground and provide a line of input followed by Ctrl-d to signal end of input file.
将该命令列表放到前台，添加一行输入，最后按下Ctrl - d表示输入文件的结尾。
To reduce labors such as user input, this paper proposes a simple stroke-based iterative image matting approach, which only needs a few user scribbles to mark foreground and background pixels.
为了获得精确的和视觉上连续的抠图结果，提出了一种基于简单笔画的图像抠图方法，该方法仅需要用户以少量笔画和拖拽矩形框的方式指定前景和背景像素即可实现。
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