Comments on: Intensity-weighted centroids http://blogs.mathworks.com/steve/2007/08/31/intensity-weighted-centroids/ Steve Eddins manages the Image & Geospatial development team at The MathWorks and coauthored Digital Image Processing Using MATLAB. He writes here about image processing concepts, algorithm implementations, and MATLAB. Sat, 11 Feb 2012 18:27:50 +0000 hourly 1 http://wordpress.org/?v=3.2.1 By: Steve http://blogs.mathworks.com/steve/2007/08/31/intensity-weighted-centroids/#comment-24524 Steve Mon, 10 Oct 2011 13:24:10 +0000 http://blogs.mathworks.com/steve/2007/08/31/intensity-weighted-centroids/#comment-24524 Jeremy—Take a look at the function bwselect; you might find it useful. Jeremy—Take a look at the function bwselect; you might find it useful.

]]> By: Jeremy http://blogs.mathworks.com/steve/2007/08/31/intensity-weighted-centroids/#comment-24504 Jeremy Mon, 26 Sep 2011 15:17:13 +0000 http://blogs.mathworks.com/steve/2007/08/31/intensity-weighted-centroids/#comment-24504 Hi Steve, Great, useful posts, thanks. I have a question about centroids and user input: is there a way to choose a particular centroid by knowing it's general region? I have an image with four spots on it. Is there a way to have a user click on one of the spots and compute the centroid for just that spot? I can figure out the code (using your helpful blog) for finding centroids and getting user input data, I just don't know how to combine the two. Thanks! Hi Steve,

Great, useful posts, thanks.

I have a question about centroids and user input: is there a way to choose a particular centroid by knowing it’s general region?

I have an image with four spots on it. Is there a way to have a user click on one of the spots and compute the centroid for just that spot? I can figure out the code (using your helpful blog) for finding centroids and getting user input data, I just don’t know how to combine the two.

Thanks!

]]> By: Marcus http://blogs.mathworks.com/steve/2007/08/31/intensity-weighted-centroids/#comment-23978 Marcus Sun, 20 Feb 2011 12:40:59 +0000 http://blogs.mathworks.com/steve/2007/08/31/intensity-weighted-centroids/#comment-23978 Hi Steve, Thanks for the reply. I was referring to the two lowest spheres in the image, but no worries, I've sorted it! I simply rotated image so the max and max-1 index of L referred to the lowest and second lowest sphere in the image. Many thanks, Marcus Hi Steve,
Thanks for the reply. I was referring to the two lowest spheres in the image, but no worries, I’ve sorted it! I simply rotated image so the max and max-1 index of L referred to the lowest and second lowest sphere in the image.
Many thanks,
Marcus

]]> By: Steve http://blogs.mathworks.com/steve/2007/08/31/intensity-weighted-centroids/#comment-23957 Steve Wed, 16 Feb 2011 18:39:41 +0000 http://blogs.mathworks.com/steve/2007/08/31/intensity-weighted-centroids/#comment-23957 Marcus—Sure. But can you clarify exactly what you mean by "inferior"? Marcus—Sure. But can you clarify exactly what you mean by “inferior”?

]]> By: Marcus http://blogs.mathworks.com/steve/2007/08/31/intensity-weighted-centroids/#comment-23955 Marcus Tue, 15 Feb 2011 15:03:38 +0000 http://blogs.mathworks.com/steve/2007/08/31/intensity-weighted-centroids/#comment-23955 Hi Steve, This might have already been asked but, using your intensity-weighted centroid example, is it possible to identify and plot only the two inferior most spheres/centroids? Many thanks, Marcus Hi Steve,
This might have already been asked but, using your intensity-weighted centroid example, is it possible to identify and plot only the two inferior most spheres/centroids?
Many thanks,
Marcus

]]> By: Coaxen http://blogs.mathworks.com/steve/2007/08/31/intensity-weighted-centroids/#comment-23783 Coaxen Tue, 14 Dec 2010 18:08:09 +0000 http://blogs.mathworks.com/steve/2007/08/31/intensity-weighted-centroids/#comment-23783 This article was extremely helpful, sir. Many thanks, Steve! This article was extremely helpful, sir. Many thanks, Steve!

]]> By: rore http://blogs.mathworks.com/steve/2007/08/31/intensity-weighted-centroids/#comment-23717 rore Fri, 19 Nov 2010 17:47:46 +0000 http://blogs.mathworks.com/steve/2007/08/31/intensity-weighted-centroids/#comment-23717 dear steve ... am a student i cant write a good code ... plz help me .. really i need ur help ... what about the numbers in the code like [.7 .7 .7] and I<255 ... and PixelList(1:4, :) ??? plz give me the informatoin about it ... dear steve …
am a student i cant write a good code … plz help me .. really i need ur help …
what about the numbers in the code like [.7 .7 .7]
and I<255 … and PixelList(1:4, :) ???
plz give me the informatoin about it …

]]> By: Steve http://blogs.mathworks.com/steve/2007/08/31/intensity-weighted-centroids/#comment-23716 Steve Fri, 19 Nov 2010 17:43:38 +0000 http://blogs.mathworks.com/steve/2007/08/31/intensity-weighted-centroids/#comment-23716 Rore—Sounds like you've a bug in your code then. Rore—Sounds like you’ve a bug in your code then.

]]> By: rore http://blogs.mathworks.com/steve/2007/08/31/intensity-weighted-centroids/#comment-23715 rore Fri, 19 Nov 2010 17:39:20 +0000 http://blogs.mathworks.com/steve/2007/08/31/intensity-weighted-centroids/#comment-23715 am try to crop 3 of that balls and test the code ... it give me an error .. am try to crop 3 of that balls and test the code … it give me an error ..

]]> By: Steve http://blogs.mathworks.com/steve/2007/08/31/intensity-weighted-centroids/#comment-23714 Steve Fri, 19 Nov 2010 17:20:25 +0000 http://blogs.mathworks.com/steve/2007/08/31/intensity-weighted-centroids/#comment-23714 Rore—Nothing needs to change. Rore—Nothing needs to change.

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