How to draw correct path for this image

2014 1 7
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更新时间：2014 1 15
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Above is my input(model) file. Left starting corner is starting point and right end is finishing. So i want to draw correct path from start to end. So anyone help me to get the output file like below

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Image Analyst
Image Analyst 2014-1-7

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This is what my maze solving program does. Go to my File Exchange to get it: http://www.mathworks.com/matlabcentral/fileexchange/?term=authorid%3A31862

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saravanakumar D
saravanakumar D 2014-1-8
But sir, But my input image is not a maze. So your problem wont work. I through your program. Algorithm of your program is getting path between two walls.
But in my case, I want to detect correct path and draw the correct path. Can you please tell anyother algorithm to solve my problem?
Image Analyst
Image Analyst 2014-1-8
编辑：Image Analyst 2014-1-14
I don't understand why you can't realize that your image can be thought of as a maze. You can try Cris Luengo's maze solver if you don't like mine: http://www.cb.uu.se/~cris/blog/index.php/archives/277
But if you just cannot understand why your system is a maze, then you can try an alternative method using the geodesic distance. See Steve's blog: http://blogs.mathworks.com/steve/2011/11/01/exploring-shortest-paths-part-1/
saravanakumar D
saravanakumar D 2014-1-15
But it's not have two walls.It's not perfect maze
Image Analyst
Image Analyst 2014-1-15
Well you can make it one by cropping and extending. Anyway, why don't you use bwdistgeodesic like Alex and Steve show you?

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Alex Taylor
Alex Taylor 2014-1-15

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The Image Processing Toolbox functions bwdistgeodesic and graydist can be used to solve this problem. This is explored in the following blog post:
http://blogs.mathworks.com/steve/2011/11/01/exploring-shortest-paths-part-1/
That Image Analyst already provided.

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