how write a matlab code for adaptive thersholding

Question

thulasi priya 2012-5-22

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/39061-how-write-a-matlab-code-for-adaptive-thersholding

1 个评论
显示 -1更早的评论隐藏 -1更早的评论

Walter Roberson 2012-5-22

Duplicate is at http://www.mathworks.com/matlabcentral/answers/39059-matlab-code-for-adaptive-thersholding

请先登录，再进行评论。

请先登录，再回答此问题。

Answer 1

Matt Kindig 2012-5-22

0
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/39061-how-write-a-matlab-code-for-adaptive-thersholding#answer_48649

This is a pretty big question. Is there a particular algorithm that you are trying to implement? A simple Google search for "Matlab adaptive thresholding" yields a bunch of results--you could just try one of those.

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。

Answer 2

Stephen 2012-5-22

0
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/39061-how-write-a-matlab-code-for-adaptive-thersholding#answer_48650

that depends on a lot of things, but you could try using im2col to analyze your image in discrete blocks and apply whatever function you want to get the binary result. You could also do like three different convolutions with different kernels and use the residuals to index which result should construct what part of the final binary result. You could also use expectation maximization to guess at the proper threshold for a section of the image. Or you could use a level set method or graph cut to segment your image. what type of image do you want to threshold? that would help you chose the code.