http://blogs.mathworks.com/steve/2006/02/17/all-about-pixel-colors-window-level/ 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. Fri, 10 Feb 2012 18:55:59 +0000 hourly 1 http://wordpress.org/?v=3.2.1 http://blogs.mathworks.com/steve/2006/02/17/all-about-pixel-colors-window-level/#comment-23966 Jonas Thu, 17 Feb 2011 15:58:56 +0000 http://blogs.mathworks.com/steve/?p=39#comment-23966 Ok, thank you for your quick reply, I'll try the newsgroups. /Jonas Ok, thank you for your quick reply, I’ll try the newsgroups. /Jonas

]]> http://blogs.mathworks.com/steve/2006/02/17/all-about-pixel-colors-window-level/#comment-23964 Steve Thu, 17 Feb 2011 12:53:20 +0000 http://blogs.mathworks.com/steve/?p=39#comment-23964 Jonas—windowlevel is a private function that is not directly callable. I don't generally get into GUI programming in this blog because it is neither my area of expertise nor my main interest. You might try posting your question to the <a href="http://www.mathworks.com/matlabcentral/newsreader/" rel="nofollow">MATLAB newsgroup</a> or to <a href="http://www.mathworks.com/matlabcentral/answers/" rel="nofollow">MATLAB Answers</a>. Jonas—windowlevel is a private function that is not directly callable. I don’t generally get into GUI programming in this blog because it is neither my area of expertise nor my main interest. You might try posting your question to the MATLAB newsgroup or to MATLAB Answers.

]]> http://blogs.mathworks.com/steve/2006/02/17/all-about-pixel-colors-window-level/#comment-23962 Jonas Thu, 17 Feb 2011 10:44:56 +0000 http://blogs.mathworks.com/steve/?p=39#comment-23962 Steve, In Imtool there is a button for adjustment of the window/level directly through click-and-drag on the image, without opening the "ImContrast" GUI. I think I located this functionality to the "windowlevel.m" file. I like this feature and want to use it in a GUI of my own. Is there a simple way to do this? I tried but couldn't really figure out what input handles the windowlevel function expects. I tried to just use the handle of the axes containing my image, but that didn't work. Steve,
In Imtool there is a button for adjustment of the window/level directly through click-and-drag on the image, without opening the “ImContrast” GUI. I think I located this functionality to the “windowlevel.m” file. I like this feature and want to use it in a GUI of my own. Is there a simple way to do this? I tried but couldn’t really figure out what input handles the windowlevel function expects. I tried to just use the handle of the axes containing my image, but that didn’t work.

]]> http://blogs.mathworks.com/steve/2006/02/17/all-about-pixel-colors-window-level/#comment-23256 Steve Thu, 08 Jul 2010 14:54:17 +0000 http://blogs.mathworks.com/steve/?p=39#comment-23256 Shaili—I have no idea what you mean by saying your image is now only one number. Shaili—I have no idea what you mean by saying your image is now only one number.

]]> http://blogs.mathworks.com/steve/2006/02/17/all-about-pixel-colors-window-level/#comment-23255 Shaili Thu, 08 Jul 2010 13:44:18 +0000 http://blogs.mathworks.com/steve/?p=39#comment-23255 I'm using the imtool function for adjusting contrast in an image after a fast Fourier transform. After adjusting the contrast using imtool, I still need to use data from the image for further analysis. However, the 256X256 image I had prior to using imtool, is now only one number and no further processing can be done. Is there a way I can get the image data? I tried exporting the data back to the workspace, but am not sure how to update the rest of the code so that it uses the new contrasted image I’m using the imtool function for adjusting contrast in an image after a fast Fourier transform. After adjusting the contrast using imtool, I still need to use data from the image for further analysis. However, the 256X256 image I had prior to using imtool, is now only one number and no further processing can be done. Is there a way I can get the image data? I tried exporting the data back to the workspace, but am not sure how to update the rest of the code so that it uses the new contrasted image

]]> http://blogs.mathworks.com/steve/2006/02/17/all-about-pixel-colors-window-level/#comment-6546 Steve Wed, 28 Feb 2007 14:19:42 +0000 http://blogs.mathworks.com/steve/?p=39#comment-6546 Ali - I'm sorry, but I don't understand your question. Can you be a lot more specific about what you want to do? What are your inputs, and what output do you want? Ali – I’m sorry, but I don’t understand your question. Can you be a lot more specific about what you want to do? What are your inputs, and what output do you want?

]]> http://blogs.mathworks.com/steve/2006/02/17/all-about-pixel-colors-window-level/#comment-6545 ali Wed, 28 Feb 2007 14:14:18 +0000 http://blogs.mathworks.com/steve/?p=39#comment-6545 I want to form a cube consisted of pixels and place this to a coordinate frame. if you help me ı will be very glad I want to form a cube consisted of pixels and place this to a coordinate frame. if you help me ı will be very glad

]]> http://blogs.mathworks.com/steve/2006/02/17/all-about-pixel-colors-window-level/#comment-6486 gary Sat, 27 Jan 2007 06:54:08 +0000 http://blogs.mathworks.com/steve/?p=39#comment-6486 it's helpful to me.thank u! it’s helpful to me.thank u!

]]> http://blogs.mathworks.com/steve/2006/02/17/all-about-pixel-colors-window-level/#comment-160 Steve Tue, 23 May 2006 13:00:59 +0000 http://blogs.mathworks.com/steve/?p=39#comment-160 Greg - I fixed the link. Greg – I fixed the link.

]]> http://blogs.mathworks.com/steve/2006/02/17/all-about-pixel-colors-window-level/#comment-159 Greg Johnson Tue, 23 May 2006 11:30:29 +0000 http://blogs.mathworks.com/steve/?p=39#comment-159 The link on this page doesn't work! (to the IPT user guide) The link on this page doesn’t work! (to the IPT user guide)

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