Re: Out of memory problem

[jui wen Huang]

jui wen Huang於 2013年5月30日星期四UTC+8下午11時29分22秒寫道：

Hello,

I try to use HDR-VDP2,

but there is a problem to execute hdrvdp function.

img1=hdrimread('ChurchWindow1_Banterle.hdr');

img=hdrimread('ChurchWindow1.hdr');

res=hdrvdp(img1,img,'rgb-bt.709',30)

and with the error

??? Error using ==> fftn

Out of memory. Type HELP MEMORY for your options.

Error in ==> fft2 at 19

        f = fftn(x);

Error in ==> fast_conv_fft at 17

fX = fft2( padarray( X, pad_size, pad_value, 'post' ) );

Error in ==> hdrvdp_visual_pathway at 89

        L_O(:,:,k) =  clamp( fast_conv_fft( double(img(:,:,k)), mtf_filter, pad_value ), 1e-5,        1e10 );

Error in ==> hdrvdp at 232

[B_R L_adapt_reference band_freq bb_padvalue] = hdrvdp_visual_pathway( reference, 'reference',metric_par, -1 );

[Rafal]

On Thursday, May 30, 2013 4:29:22 PM UTC+1, jui wen Huang wrote:

Hello,

I try to use HDR-VDP2,

but there is a problem to execute hdrvdp function.

img1=hdrimread('ChurchWindow1_Banterle.hdr');

img=hdrimread('ChurchWindow1.hdr');

res=hdrvdp(img1,img,'rgb-bt.709',30)

and with the error

??? Error using ==> ifftn

Out of memory. Type HELP MEMORY for your options

The problems seems to be with the matlab's FFT function. HDR-VDP needs to operate on matrices twice the size of the original image. For large resolution images, this could be quite substantial. Also, the memory management is not optimised in HDR-VDP-2.

My suggestion is to run with 64-bit version of the matlab and ensure you have sufficient memory (4Gb should be more than enough).

Rafal

[jui wen Huang]

Thank you.

I have solve the problem with win7 64-bit version.

Rafal於 2013年6月1日星期六UTC+8下午4時49分46秒寫道：