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Subject: Find the region with the smallest mean value within a bigger matrix From: Philipp Steffen Date: 15 Sep, 2010 19:46:07 Message: 1 of 14 
Hi, 
Subject: Find the region with the smallest mean value within a bigger matrix From: Sean Date: 15 Sep, 2010 20:34:04 Message: 2 of 14 
"Philipp Steffen" <philipp.steffen@imba.oeaw.ac.at> wrote in message <i6r7pv$h46$1@fred.mathworks.com>... 
Subject: Find the region with the smallest mean value within a bigger From: Walter Roberson Date: 15 Sep, 2010 20:41:14 Message: 3 of 14 
On 100915 02:46 PM, Philipp Steffen wrote: 
Subject: Find the region with the smallest mean value within a bigger matrix From: ImageAnalyst Date: 15 Sep, 2010 21:13:30 Message: 4 of 14 
Philipp Steffen: 
Subject: Find the region with the smallest mean value within a bigger matrix From: Philipp Steffen Date: 15 Sep, 2010 21:46:04 Message: 5 of 14 
Unfortunately I dont have the Image Processing Toolbox. But you are right, the purpose is indeed to find a region in an image (represented as a matrix) that has the lowest intensity values. Perhaps I was not quite clear about it. I dont really have to calculate the average of all possible submatrices. I would probably be fine with using a simpler approach that helps me to find the region with the lowest values. I will have a look at the rolling sum approach but I dont quite see how cumsum() should help me? 
Subject: Find the region with the smallest mean value within a bigger matrix From: ImageAnalyst Date: 15 Sep, 2010 22:27:13 Message: 6 of 14 
Then just write your own convolution/filtering routine  it's not that 
Subject: Find the region with the smallest mean value within a bigger matrix From: Matt J Date: 15 Sep, 2010 22:50:24 Message: 7 of 14 
"Philipp Steffen" <philipp.steffen@imba.oeaw.ac.at> wrote in message <i6reqs$1eg$1@fred.mathworks.com>... 
Subject: Find the region with the smallest mean value within a bigger matrix From: ImageAnalyst Date: 16 Sep, 2010 00:11:57 Message: 8 of 14 
Matt: 
Subject: Find the region with the smallest mean value within a bigger matrix From: ImageAnalyst Date: 16 Sep, 2010 00:45:56 Message: 9 of 14 
In case, Phillipp comes back, here is the version that doesn't 
Subject: Find the region with the smallest mean value within a bigger matrix From: Matt J Date: 16 Sep, 2010 01:02:04 Message: 10 of 14 
ImageAnalyst <imageanalyst@mailinator.com> wrote in message <8cbcc69280e043f897bf0c50d1543716@c16g2000vbp.googlegroups.com>... 
Subject: Find the region with the smallest mean value within a bigger matrix From: ImageAnalyst Date: 16 Sep, 2010 01:48:06 Message: 11 of 14 
On Sep 15, 9:02 pm, "Matt J " <mattjacREM...@THISieee.spam> wrote: 
Subject: Find the region with the smallest mean value within a bigger matrix From: Philipp Steffen Date: 16 Sep, 2010 08:23:33 Message: 12 of 14 
I am sorry about this, but I think I did not really make clear what my problem is. 
Subject: Find the region with the smallest mean value within a bigger matrix From: Bruno Luong Date: 16 Sep, 2010 08:41:06 Message: 13 of 14 
"Philipp Steffen" <philipp.steffen@imba.oeaw.ac.at> wrote in message <i6sk65$g6b$1@fred.mathworks.com>... 
Subject: Find the region with the smallest mean value within a bigger matrix From: Philipp Steffen Date: 16 Sep, 2010 09:48:04 Message: 14 of 14 
"Bruno Luong" <b.luong@fogale.findmycountry> wrote in message <i6sl72$kuv$1@fred.mathworks.com>... 
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