How to calculate chain code and how to get the boundary as an np-by-2 array (it's required for the chain code)?

Question

Minhaj Nur Alam 2013-4-3

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/69686-how-to-calculate-chain-code-and-how-to-get-the-boundary-as-an-np-by-2-array-it-s-required-for-the-c

I am trying to determine chain code for an image. I have tried Freeman chain code ( http://www.mathworks.com/matlabcentral/fileexchange/29518-freeman-chain-code) and also a code from Gonzalez book. I have two problems.

1. For the chain code, how do i get the boundary as np-by-2 array from my image?

2. In the code grom Gonzalez book, i see this error, "the input curve is broken... ... ..."

Any help would be appreciated. Thanx

0 个评论
显示 -2更早的评论隐藏 -2更早的评论

请先登录，再进行评论。

请先登录，再回答此问题。

Answer 1

Image Analyst 2013-4-3

0
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/69686-how-to-calculate-chain-code-and-how-to-get-the-boundary-as-an-np-by-2-array-it-s-required-for-the-c#answer_80881

Why not use bwboundaries() to get an ordered list of the boundary coordinates. If you really need the chain code, you could get it from the list of x,y boundary coordinates.