Failed to allocate memory for image.

[Sadegh Riyahi]

Hi Plastimatch community and Greg

I've tried to simply register the following two images:

Fixed: pixel size:0.00862mm isotropic, 8bit, matrix size: 900x600x1000

Moving: pixel size:0.02mm isotropic, 16bit , matrix size: 400x300x500

they are same subject and the same anatomical part of the body. I've done histogram matching to bring them to the same intensity distribution, however I didn't use normalized image filter since I'm using mse metric for now.

I tried plastimatch Bspline registration and I get the following error:

//////////////////////////////////////////////////

Loading fixed image: 20um-cropped.mha

Loading moving image: 8um_lightsource.mha

ITK exception reading image file: 8um_lightsource.mha!

itk::MemoryAllocationError (0028EC10)

Location: "short *__thiscall itk::ImportImageContainer<unsigned long,short>::All

ocateElements(unsigned long,bool) const"

File: d:\insighttoolkit-4.7.2\modules\core\common\include\itkImportImageContaine

r.hxx

Line: 199

Description: Failed to allocate memory for image.

//////////////////////////////////////////////

Following is Plastimatch command I use:

/////////////////////

[GLOBAL]

fixed=20um-cropped.mha

moving=8um_lightsource.mha

img_out=warped.mha

vf_out=vector_field.mha

[STAGE]

xform=bspline

optim=lbfgsb

impl=plastimatch

metric=mse

max_its=100

convergence_tol=5

grad_tol=1.5

res=4 4 2

grid_spac=3 3 3

regularization_lambda=0.00001

//////////////////////////////////

My PC has 64GB RAM, no other processes running. I was wondering, do you think it is really because the application cannot allocate the memory to the fixed image that could be a huge image (136MB) or there could be another problem?

I appreciate your help.

Thanks.

Sadegh

[Sharp, Gregory C.]

Hi Sadegh,

 

Can you please confirm that you compiled as 64-bit application?

 

(Which compiler version did you use?)

 

Greg

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[Sadegh Riyahi]

Hi Greg,

Yes. I figured Plastimatch was compiled using MS visual studio 12, 32 bit, despite the machine is 64bit, so only 4GB memory was being allocated and it had problem opening the image. The same happened to ITK binaries. Now we're good.

Thanks

Sadegh