查找圆边:

问题描述

查找圆的边缘:

这是我发布的两个示例图像，我需要一种算法来找到这些圆的边缘.是否有可能开发一种通用圆算法，该算法可以在以下所有情况下找到所有可能的圆?

Finding circle''s edges:

Here are the two sample images I have posted and I need an algorithm to find the edges of these circles. Is it possible to develop one generic circle algorithm, that could find all possible circles in all scenarios like the ones below?

1. 圆圈的颜色可能不同(白色，黑色，灰色，红色)
2. 背景颜色可能不同
3. 大小不同

图片1:

http://postimage.org/image/tddhvs8c5/ [ ^ ]

图片2:

http://postimage.org/image/8kdxqiiyb/ [ ^ ]

图片3:

http://postimage.org/image/yuv4a30ch/ [ ^ ]

图片4:

http ://postimage.org/image/5s4hbkqyb/ [ ^ ]

请提出一些想法，写出可以在上述圈子中解决的算法.

在此先感谢！

Image 1:

http://postimage.org/image/tddhvs8c5/[^]

Image 2:

http://postimage.org/image/8kdxqiiyb/[^]

Image 3:

http://postimage.org/image/yuv4a30ch/[^]

Image 4:

http://postimage.org/image/5s4hbkqyb/[^]

Please suggest some idea to write an algorithm that should work out on above circles.

Thanks in advance!

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