Comments on: Technique for Visual Image Comparison http://blogs.mathworks.com/loren/2009/03/31/technique-for-visual-image-comparison/ Loren Shure works on design of the MATLAB language at MathWorks. She writes here about once a week on MATLAB programming and related topics. Thu, 09 Feb 2012 04:19:21 +0000 hourly 1 http://wordpress.org/?v=3.2.1 By: Ömer KAYA http://blogs.mathworks.com/loren/2009/03/31/technique-for-visual-image-comparison/#comment-31579 Ömer KAYA Thu, 12 Aug 2010 12:58:30 +0000 http://blogs.mathworks.com/loren/2009/03/31/technique-for-visual-image-comparison/#comment-31579 Hello all; thanks for the information about subtraction; I have a duty to complete if i want to detect to filtered images in different program with the same filter and want to detect the differences do i must go with the same extracting method or can i go with something else. Becouse if i go with the subtraction there can be minus signs of the process what shall i do with them? or can i do something with them like in code classification (if A(0;0) > 0 then ...) Thanks all.. Regards Hello all;

thanks for the information about subtraction;

I have a duty to complete if i want to detect to filtered images in different program with the same filter and want to detect the differences do i must go with the same extracting method or can i go with something else.

Becouse if i go with the subtraction there can be minus signs of the process what shall i do with them? or can i do something with them like in code classification (if A(0;0) > 0 then …)

Thanks all..

Regards

]]> By: imran http://blogs.mathworks.com/loren/2009/03/31/technique-for-visual-image-comparison/#comment-31168 imran Fri, 19 Mar 2010 16:17:32 +0000 http://blogs.mathworks.com/loren/2009/03/31/technique-for-visual-image-comparison/#comment-31168 Dear all I have a question If I want to compare two high frequency images, i.e whether they are same or not. Is there any other method other than subtracting the two or taking correlation? thanks Imran Dear all
I have a question
If I want to compare two high frequency images, i.e whether they are same or not. Is there any other method other than subtracting the two or taking correlation?

thanks
Imran

]]> By: Mike Garrity http://blogs.mathworks.com/loren/2009/03/31/technique-for-visual-image-comparison/#comment-30178 Mike Garrity Thu, 02 Apr 2009 14:02:49 +0000 http://blogs.mathworks.com/loren/2009/03/31/technique-for-visual-image-comparison/#comment-30178 This is called a "matrix wipe". It can be really effective if you add a slider to let the user control the amount of wipe. Also, being able to choose different wipes is useful. http://en.wikipedia.org/wiki/Wipe_(transition) This is called a “matrix wipe”. It can be really effective if you add a slider to let the user control the amount of wipe. Also, being able to choose different wipes is useful.

http://en.wikipedia.org/wiki/Wipe_(transition)

]]> By: Loren http://blogs.mathworks.com/loren/2009/03/31/technique-for-visual-image-comparison/#comment-30177 Loren Thu, 02 Apr 2009 12:53:49 +0000 http://blogs.mathworks.com/loren/2009/03/31/technique-for-visual-image-comparison/#comment-30177 Oliver- Nice technique! --Loren Oliver-

Nice technique!

–Loren

]]> By: Oliver Woodford http://blogs.mathworks.com/loren/2009/03/31/technique-for-visual-image-comparison/#comment-30161 Oliver Woodford Wed, 01 Apr 2009 08:40:15 +0000 http://blogs.mathworks.com/loren/2009/03/31/technique-for-visual-image-comparison/#comment-30161 Here is an example of what I was talking about above: http://www.robots.ox.ac.uk/~ojw/images/prob_demo.png One of the benefits of using SC to do this is that it allows a colorbar to be added (with the correct colours and scale). Here is an example of what I was talking about above:
http://www.robots.ox.ac.uk/~ojw/images/prob_demo.png
One of the benefits of using SC to do this is that it allows a colorbar to be added (with the correct colours and scale).

]]> By: Oliver Woodford http://blogs.mathworks.com/loren/2009/03/31/technique-for-visual-image-comparison/#comment-30160 Oliver Woodford Wed, 01 Apr 2009 08:36:22 +0000 http://blogs.mathworks.com/loren/2009/03/31/technique-for-visual-image-comparison/#comment-30160 In my work I often have an image and some 1-d metric for each pixel in the image, which I then want to overlay on the image. I do this by making the image greyscale and using the metric to overlay colour, using a colormap like jet. I use my SC function (on the FEX) to do this for me, using the 'prob' or 'prob_jet' colormaps. In my work I often have an image and some 1-d metric for each pixel in the image, which I then want to overlay on the image. I do this by making the image greyscale and using the metric to overlay colour, using a colormap like jet. I use my SC function (on the FEX) to do this for me, using the ‘prob’ or ‘prob_jet’ colormaps.

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