ERROR : error using imPadMex

[purva98]

Error using imPadMex
Requested 137438953888x512x7598263500303858035 (17179869184.0GB) array exceeds maximum array size
preference. Creation of arrays greater than this limit may take a long time and cause MATLAB to become
unresponsive. See array size limit or preference panel for more information.

Error in imPad (line 39)
J = imPadMex( I, pad, type );

Error in edgesDetect (line 52)
I = imPad(I,p,'symmetric');

Error in edgesDemo (line 25)
tic, E=edgesDetect(I,model); toc

[weixuansun]

I got exactly same error here, is there any solutions?

[byjiang1996]

Me too...

[jmbuena]

Hi,

I don't know exactly about your errors, but it seems the same error we fixed with:
Push Request: #38.

This errors are related to a recent change in Matlab in the mex types (Matlab 2017?). In the P. Dollar code they are hardcoded to C++ types. In my fix I changed this types to Matlab C++ types, and then everything works.

On the other hand, I don't know exactly if in your case it would be fixed with the Push Request, but I bet if not, the fix would be similar.

[MysteryVaibhav]

I am not able to resolve this issue. If I just pull the code and try to run the mex commands, I get the following error:

---

mex private/edgesDetectMex.cpp -outdir private CXXFLAGS="$CXXFLAGS -fopenmp" LDFLAGS="$LDFLAGS -fopenmp"
Building with 'g++'.
Error using mex
edges/private/edgesDetectMex.cpp: In function ‘void mexFunction(int, mxArray**, int, const mxArray**)’:
edges/private/edgesDetectMex.cpp:99:63: error: cannot convert ‘const int*’ to ‘const size_t* {aka const long unsigned int*}’
for argument ‘2’ to ‘mxArray* mxCreateNumericArray(size_t, const size_t*, mxClassID, mxComplexity)’
pl[0] = mxCreateNumericArray(3,outDims,mxSINGLE_CLASS,mxREAL);
^
edges/private/edgesDetectMex.cpp:101:63: error: cannot convert ‘const int*’ to ‘const size_t* {aka const long unsigned int*}’
for argument ‘2’ to ‘mxArray* mxCreateNumericArray(size_t, const size_t*, mxClassID, mxComplexity)’
pl[1] = mxCreateNumericArray(3,indDims,mxUINT32_CLASS,mxREAL);
^
edges/private/edgesDetectMex.cpp:103:71: error: cannot convert ‘const int*’ to ‘const size_t* {aka const long unsigned int*}’
for argument ‘2’ to ‘mxArray* mxCreateNumericArray(size_t, const size_t*, mxClassID, mxComplexity)’
if(nl>2) pl[2] = mxCreateNumericArray(5,segDims,mxUINT8_CLASS,mxREAL);
^

---

If I change the types from const int to const size_t or const mwSize, then the mex code compiles successfully with some warnings.

But then when I try to use the edgeBoxes(img, model, opts) function, I get the same error as mentioned in the issue.

---

Error using imPadMex
Requested 137438953888x512x7598263500303858035 (17179869184.0GB) array exceeds maximum array size

---

If anyone found a solution to this then please share. I am not sure if this is a version compatibility issue, I am using a 64-bit Linux machine with Matlab2017b.

[ngonthier]

I have the same error with Matlab2017b on 64-bit Linux machine.

[zchrissirhcz]

this error is caused by mwSize type. mwSize is equivalent to int in C when <= matlab2016b.
However, from matlab2017b, mwSize is equivalent to size_t. On 64bit system, int is 32bit, and size_t is 64bit.