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Polygon:即采用轮廓点的方式存储,是n*2的数组,存储的是每个点的坐标
Mask:是与原始图像具有相同尺寸的二值掩码图,1为目标区域,0为背景区域
RLE:是对mask进行行程长度编码,好处是压缩和解压缩都非常快
from pycocotools import mask as mask_utils
rle = {
"size": [500, 500],
"counts": "Ydi2P1b>5L2N3L4J8G8L3M2N2N2M4L4L4M2N2N2M4L4M2O1N1O2O2L3N2O1N101N2N2N2N2N101O0O2O0O2N2O0O2N101O0O10001O001O1O0O2O00001O000O100O10001O0O100000001O001O00001O0000001O000000000000000000000001O00000O100000001O001N100O101O0O1000000O2O00001O001O001N2O0O1O2N101O1N2O001N101N101M201N2O1N2O1N2O1N2N2N2N3M2O1N2N2N3M2N2N2O1M4K7I5L2O2N2M4L;A:D9L5F<FimY2"
}
a = mask_utils.decode(rle)
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