A robust matting program can generate trimap, you can manually draw the foreground, background, trimap, extract images

RobustMatting_1.45\cv.dll
..................\highgui.dll
..................\RobustMatting.exe
..................\RobustMatting1.45_Manual.pdf
..................\test_1\original.bmp
..................\......\stroke.bmp
..................\......\Thumbs.db
..................\......\trimap.bmp
..................\......\trimap_1.bmp
..................\......\trimap_2.bmp
..................\.....2\original.bmp
..................\......\Thumbs.db
..................\......\trimap_1.bmp
..................\.....3\peacock.bmp
..................\......\peacock_stroke.bmp
..................\......\Thumbs.db
..................\.....4\dog.jpg
..................\......\dog_bg_blur.jpg
..................\......\dog_stroke.jpg
..................\test_1
..................\test_2
..................\test_3
..................\test_4
RobustMatting_1.45

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