Comments on: Finding bright objects http://blogs.mathworks.com/steve/2007/10/19/finding-bright-objects/ Steve Eddins manages the Image & Geospatial development team at <a href="http://www.mathworks.com/">The MathWorks</a> and coauthored <a href="http://www.mathworks.com/support/books/book5291.html?category=-1&language=-1">Digital Image Processing Using MATLAB</a>. He writes here about image processing concepts, algorithm implementations, and MATLAB.<br><br><img> Sun, 08 Nov 2009 02:27:00 +0000 http://wordpress.org/?v=2.3.1 By: Damodar Pokhrel http://blogs.mathworks.com/steve/2007/10/19/finding-bright-objects/#comment-15327 Damodar Pokhrel Wed, 21 Nov 2007 23:11:45 +0000 http://blogs.mathworks.com/steve/2007/10/19/finding-bright-objects/#comment-15327 Thankx Steve, it works. Thankx Steve, it works.

]]> By: Steve http://blogs.mathworks.com/steve/2007/10/19/finding-bright-objects/#comment-15322 Steve Wed, 21 Nov 2007 22:00:17 +0000 http://blogs.mathworks.com/steve/2007/10/19/finding-bright-objects/#comment-15322 Damodar—Use the <tt>~</tt> operator for a binary image, or use <tt>imcomplement</tt> for a grayscale image. Damodar—Use the ~ operator for a binary image, or use imcomplement for a grayscale image.

]]> By: Damodar Pokhrel http://blogs.mathworks.com/steve/2007/10/19/finding-bright-objects/#comment-15321 Damodar Pokhrel Wed, 21 Nov 2007 21:56:37 +0000 http://blogs.mathworks.com/steve/2007/10/19/finding-bright-objects/#comment-15321 Hi Steve, i have a binary image,back ground is white and high contrast object is black, how can i flip to get background is black and high contrast object is white? Thank you. Damodar Hi Steve,

i have a binary image,back ground is white and high contrast object is black, how can i flip to get background is black and high contrast object is white?

Thank you.
Damodar

]]> By: Steve http://blogs.mathworks.com/steve/2007/10/19/finding-bright-objects/#comment-13133 Steve Tue, 30 Oct 2007 21:20:15 +0000 http://blogs.mathworks.com/steve/2007/10/19/finding-bright-objects/#comment-13133 Becky—Contact Professor <a href="http://www.eng.auburn.edu/~sjreeves/" rel="nofollow">Stanley J. Reeves</a> at Auburn University and ask him for a copy of his paper, "Fast Image Restoration Without Boundary Artifacts, IEEE Transactions on Image Processing, October 2005. The paper has descriptions of several methods, including the one used by edgetaper. Becky—Contact Professor Stanley J. Reeves at Auburn University and ask him for a copy of his paper, “Fast Image Restoration Without Boundary Artifacts, IEEE Transactions on Image Processing, October 2005. The paper has descriptions of several methods, including the one used by edgetaper.

]]> By: becky http://blogs.mathworks.com/steve/2007/10/19/finding-bright-objects/#comment-12673 becky Wed, 24 Oct 2007 05:37:02 +0000 http://blogs.mathworks.com/steve/2007/10/19/finding-bright-objects/#comment-12673 Hi steve I read your several paper about image restoration.I have a question about edgetaper in MATLAB,It really acted well in reducing ringing effect .But what is theory about edgetaper? thank you. Hi steve I read your several paper about image restoration.I have a question about edgetaper in MATLAB,It really acted well in reducing ringing effect .But what is theory about edgetaper? thank you.

]]> By: Steve http://blogs.mathworks.com/steve/2007/10/19/finding-bright-objects/#comment-12609 Steve Tue, 23 Oct 2007 03:31:51 +0000 http://blogs.mathworks.com/steve/2007/10/19/finding-bright-objects/#comment-12609 Thanks, Rob. I thought maybe I went off the deep end with the upslope area series. It took a lot more posts than I thought it would to work everything out. There were some useful image processing techniques in there, though. In the future I'll try to shift the balance a bit and include more posts like this one. Thanks, Rob. I thought maybe I went off the deep end with the upslope area series. It took a lot more posts than I thought it would to work everything out. There were some useful image processing techniques in there, though. In the future I’ll try to shift the balance a bit and include more posts like this one.

]]> By: Rob http://blogs.mathworks.com/steve/2007/10/19/finding-bright-objects/#comment-12602 Rob Tue, 23 Oct 2007 01:27:19 +0000 http://blogs.mathworks.com/steve/2007/10/19/finding-bright-objects/#comment-12602 Hey Steve, Great post. In addition to the geospatial posts, which involve seemingly deeper technicals, I like and appreciate these "fundamentals" type posts. It's the variety of applications you cover that keep me coming back. We use an algorythm similar to this for crude machine vision prototypes, so its usefulness goes well beyond rice! Keep up the good work, Rob Hey Steve,

Great post. In addition to the geospatial posts, which involve seemingly deeper technicals, I like and appreciate these “fundamentals” type posts. It’s the variety of applications you cover that keep me coming back. We use an algorythm similar to this for crude machine vision prototypes, so its usefulness goes well beyond rice!

Keep up the good work,
Rob

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