How to get smooth straight line in binary(im2bw)?

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muhammad ismail
muhammad ismail 2015-1-22
回答： Image Analyst 2015-1-22
How to get smooth straight line in the middle of this picture in binary(bw). I try using c=im2bw(b,graythresh(b)); but it become rough line. Need straight line as actual image in binary(bw). Thank you.

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Image Analyst
Image Analyst 2015-1-22
How about using imline()? Or houghlines() or hough()?

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