无法弄清楚如何从验证码中分割重叠的数字

Question

i'm writing an application for solving captcha. Original captcha looks like this: Original captcha

After I apply erosion+dilation it looks like this: erosion+dilation applied

Finally I find contours for further segmentation. Obviously, I can cut "1" from the image as it's not connected with other digits. But how can I separate 5 from 7, and 7 from 8, and two zeros on the right in this case? On the first link I see that 5 and 7 are not overlapped, this way i can somehow remember it and use after applying erosion+dilation. Maybe drawing white vertical line. But still i have problems with 7 and 8. Any help and advises are appreciated!

Answer 1

您需要的是一种称为骨架化的技术， https：//en.wikipedia.org/wiki/Topological_skeleton在此特定情况下将有所帮助。