A hole filling algorithm based on contours information is presented, and it conquers the limitation of the conventional ones to recognize the hole region automatically.

为了克服传统填充算法无法自动识别孔洞区域的不足，提出了一种基于边界信息的孔洞填充算法。

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Astronomers and scientists think that a black hole is a region of space (not a thing) into which matter has fallen and from which nothing can escape - not even light. So we can't see a black hole.

天文学家和科学家们认为黑洞是个空间区域，物体会掉进去，而没有物体能从中逃逸出来——即使是光也不能，所以我们看不到黑洞。

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The problem comes from a vector field satisfying this criterion in a region but it has a hole in it.

如果一个向量场，在一个有洞的区域上，满足这个条件，就会出问题。

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These winds are generated in a swirling mass of matter around the equatorial region of a black hole, the accretion disk.

CNN: Black holes in a new light

Within 20 minutes lay several sandy beaches on the Ionian Sea, there are two 18-hole golf courses nearby, and the region is teeming with historic sighs, from ancient Greek ruins to Neolithic cave dwellings.

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But, as Graham notes, no one knows for certain just how large the innermost high-density region of such a supermassive black hole might be.

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