[Insight-users] A memory issue

[Ali Mouizina]

To Dzenan :

How can I do this ?

To Kevin :

All my values are within 0 and 1 but I think I can quantisize those 
values between 0 and 255. I tried your suggestion on a smaller image 
(and hence  a smaller vector 512*512*22*125 <=> 671 MB with unsigned 
char) but it crashes when I instantiate 2 vectors (it works with 1). By 
the way I have a 8 GB of RAM and windows 7 64 bits. How can I fix this ?

Thank you very much for your help !

Regards,

Ali

Le 20/01/2012 13:09, Kevin Keraudren a écrit :
> Also, changing PixelType and using a smaller type would save memory. Of
> course, not all algorithms can live with unsigned char.
>
> unsigned char: 512*512*156*125/1024/1024/1024 ~ 4.8 GB
> double:        512*512*156*125*8/1024/1024/1024 ~ 38.1 GB
>
>
> On 20/01/12 11:26, Dženan Zukić wrote:
>> Have you tried increasing virtual memory/swap file size? That should do
>> it, I think. But it would be slower, of course.
>>
>> On Fri, Jan 20, 2012 at 11:31, Ali Mouizina<ali.mouizina at gmail.com
>> <mailto:ali.mouizina at gmail.com>>  wrote:
>>
>>      Hi all,
>>
>>      I'm currently trying to allocate a 4-D vector whose size is
>>      512*512*156*125 to store the results of  some computations i do on a
>>      3D image. As expected, I don't have enough memory, is there any
>>      trick to get round this problem ?
>>
>>      The results I get at each iteration of the computation process is
>>      stored into a slice of the 4D vector, so I thought I can process
>>      each slice separately. Any suggestions on how to do that or any
>>      other ideas ?
>>
>>      Regards,
>>
>>      Ali
>>
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-- 
Ali Mouizina
Diplômé en Traitement Numérique du Signal
Elève-Ingénieur en Traitement d'images
Mastère Spécialisé Telecom ParisTech : Signal, Images et Reconnaissance de formes
Paris - FRANCE

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Ali Mouizina
Graduated in Digital Signal Processing
Currently studying Image Processing
Advanced Masters at Telecom ParisTech : Signal, Images and Pattern Recognition
Paris - FRANCE

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