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<p class="MsoNormal">Oh! I think you are experiencing integer overflow with that size of a matrix. The value Francois (correctly) computed 3,200,000,000 is ~3GB which is greater than numeric_traits<int>::max(), which for 32-bit singed integers is 2,147,483,647.
The internal implementation of this class is vnl_matrix, so the integer limitation lies within that library. So you matrix is too big for this library.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">When I looked at this e-mail earlier I miss computed the size, so I didn’t realized this problem.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">HTH,<o:p></o:p></p>
<p class="MsoNormal">Brad<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal" style="margin-left:.5in"><b><span style="font-size:12.0pt;color:black">From:
</span></b><span style="font-size:12.0pt;color:black">Francois Budin <francois.budin@kitware.com><br>
<b>Date: </b>Monday, September 11, 2017 at 1:38 PM<br>
<b>To: </b>Fabian Torres <fabian.trobles@gmail.com><br>
<b>Cc: </b>"insight-users@itk.org" <insight-users@itk.org><br>
<b>Subject: </b>Re: [ITK-users] Variable Matrix Access Violiotation<o:p></o:p></span></p>
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Hello Fabian,<o:p></o:p></p>
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<p class="MsoNormal" style="margin-left:.5in">You are most likely allocating more memory than what your computer can allocates. If you compute the memory required for your matrix, it will be at least:<o:p></o:p></p>
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8 (long doubles on Visual Studio C++ are the same size as doubles) * 2*100*100*2*100*100 = 3 200 000 000 Bytes<o:p></o:p></p>
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<p class="MsoNormal" style="margin-left:.5in">This means that you need to have at least that much memory available.<o:p></o:p></p>
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If your computer does not have this amount of memory available, you will run into errors.<o:p></o:p></p>
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<p class="MsoNormal" style="margin-left:.5in">Hope this helps,<o:p></o:p></p>
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<p class="MsoNormal" style="margin-left:.5in">Francois<o:p></o:p></p>
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<p class="MsoNormal" style="margin-left:.5in"><o:p> </o:p></p>
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<p class="MsoNormal" style="margin-left:.5in">On Wed, Aug 30, 2017 at 12:24 PM, Fabian Torres <<a href="mailto:fabian.trobles@gmail.com" target="_blank">fabian.trobles@gmail.com</a>> wrote:<o:p></o:p></p>
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<p class="MsoNormal" style="margin-left:.5in">Hi evryone. <o:p></o:p></p>
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<p class="MsoNormal" style="margin-left:.5in"><o:p> </o:p></p>
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<p class="MsoNormal" style="margin-left:.5in">I´m using itk VariableMatrix to do some image processing. But I have some problems initializing my matrices.<o:p></o:p></p>
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<p class="MsoNormal" style="margin-left:.5in">When I use small sizes like this I do not have any problem<o:p></o:p></p>
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<p class="MsoNormal" style="margin-left:.5in"><o:p> </o:p></p>
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<p class="MsoNormal" style="margin-left:.5in">//matrix A<o:p></o:p></p>
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<p class="MsoNormal" style="margin-left:.5in">regionSize[0] = 15;<o:p></o:p></p>
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<p class="MsoNormal" style="margin-left:.5in">regionSze[1] = 15;<o:p></o:p></p>
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<p class="MsoNormal" style="margin-left:.5in"> VariableSizeMatrix<long double> matA;<o:p></o:p></p>
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<p class="MsoNormal" style="margin-left:.5in">matA.SetSize(2*regionSize[0]*regionSize[1],2*regionSize[0]*regionSize[1]);<o:p></o:p></p>
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<p class="MsoNormal" style="margin-left:.5in">matA.Fill(0.0);<o:p></o:p></p>
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<p class="MsoNormal" style="margin-left:.5in"><o:p> </o:p></p>
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<p class="MsoNormal" style="margin-left:.5in">But when I use bigger sizes like:<o:p></o:p></p>
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<p class="MsoNormal" style="margin-left:.5in"><o:p> </o:p></p>
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<p class="MsoNormal" style="margin-left:.5in">regionSize[0] = 100;<o:p></o:p></p>
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<p class="MsoNormal" style="margin-left:.5in">regionSze[1] = 100;<o:p></o:p></p>
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<p class="MsoNormal" style="margin-left:.5in"><o:p> </o:p></p>
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<p class="MsoNormal" style="margin-left:.5in">I get an Acces Violation exception<o:p></o:p></p>
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<p class="MsoNormal" style="margin-left:.5in">Access violation reading location 0xcdcdcdc1.<o:p></o:p></p>
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<p class="MsoNormal" style="margin-left:.5in"><o:p> </o:p></p>
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<p class="MsoNormal" style="margin-left:.5in">I'm using Visualstudio 2008 and ITK 4.4<o:p></o:p></p>
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<p class="MsoNormal" style="margin-left:.5in"><o:p> </o:p></p>
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<p class="MsoNormal" style="margin-left:.5in">Does this has something to do with memory allocation?<o:p></o:p></p>
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<p class="MsoNormal" style="margin-left:.5in">Is there a way a could verify if I have enough memory to allocate my matrix?<o:p></o:p></p>
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<p class="MsoNormal" style="margin-left:.5in"><o:p> </o:p></p>
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<p class="MsoNormal" style="margin-left:.5in">Thanks.<o:p></o:p></p>
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<p class="MsoNormal" style="margin-left:.5in"><span style="color:#888888"><o:p> </o:p></span></p>
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<p class="MsoNormal" style="margin-left:.5in"><span class="hoenzb"><span style="color:#888888">--
</span><o:p></o:p></span></p>
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<p class="MsoNormal" style="margin-left:.5in"><span style="color:#888888">Fabián Torres Robles<br>
Maestría en Ciencias en Ingeniería Electrónica<br>
Ingeniería en Sistemas Electrónicos<br>
Tel. 58081280, 0445534661338<br>
E-mail <a href="mailto:fabian.trobles@gmail.com" target="_blank">fabian.trobles@gmail.com</a>,
<a href="mailto:dae.wong@gmail.com" target="_blank">dae.wong@gmail.com</a> </span>
<o:p></o:p></p>
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