About HDRVDP_VISUALIZE Parameter Question from Matlab

[Wei-Sung Chen]

Hi:

 

I was using hdrvdp-2.1.1 and matlabPyrTools_1.4_fixed,

 

I reference Contents.m and try this code...

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T = double(imread( 'C:\HDR-VDP-2\lena_test.bmp' ))/2^8;
R = double(imread( 'C:\HDR-VDP-2\lena.bmp' ))/2^8;
ppd = hdrvdp_pix_per_deg( 21, [size(T,2) size(T,1)], 1 );
res1 = hdrvdp( T, R, 'sRGB-display', ppd )

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and return P_map, P_det, ..., Q_MOS.

It's so great! success.

 

But I do not understand how to apply the first two parameters for hdrvdp_visualize function.

map = hdrvdp_visualize( P, img, target, colormap )

the target select 'screen', color map select 'trichromatic' .

 

where error map:P, context image:img

how to setup and apply?

 

Sincere thank you for your help.

 

 

WSC.

 

 

 

 

 

 

 

 

 

[Rafal]

Here is an example how hdrvdp_visualize could be used:

reference = logspace( log10(0.1), log10(1000), 512 )' * ones( 1, 512 );

test = reference .* (1 + (rand( 512, 512 )-0.5)*0.02);

res = hdrvdp( test, reference, 'luminance', 30 );

imshow( hdrvdp_visualize( res.P_map, test ) )

res.P_map is the probability of detection map.

Rafal

[Wei-Sung Chen]

 

Dear Rafal:

 

Thank you for your help!  This is my biggest tips, and successfully resolved the problem!

 

WSC.

 

Rafal於 2012年4月24日星期二UTC+8下午5時44分23秒寫道：

Rafal於 2012年4月24日星期二UTC+8下午5時44分23秒寫道：

Rafal於 2012年4月24日星期二UTC+8下午5時44分23秒寫道：

Rafal於 2012年4月24日星期二UTC+8下午5時44分23秒寫道：