openCV grabcut GC_INIT_WITH_MASK first iteration
他，
如何使用掩码初始化第一个 Grabcut？就我而言，每次我遇到此错误时： (-215) !bgdSamples.empty()
它并不完美，但结果很干净，图像边缘没有矩形。
第一个使用 rect 的 Grabcut init
使用 GC_PR_FGD/BGD 作为颜色在图像周围画一个更大的矩形
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int xyCord = 1;
int size = 2*xyCord;
rectangle(GrabCut::mask, Point(xyCord,xyCord),Point(GrabCut::image.cols–size,GrabCut::image.rows–size),Scalar(GC_PR_FGD),30);
rectangle(GrabCut::mask, Point(xyCord,xyCord), Point(GrabCut::image.cols–size,GrabCut::image.rows–size),Scalar(GC_PR_BGD),30);
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第二个带掩码的 Grabcut init
来源：https://www.codenong.com/26041887/
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