how can i apply rgb2gray to dicom image...

why cant i apply rgb2gray to dicom image... its giving an error...

>> I = dicomread('\C:\Users\Asad\Documents\MATLAB\1.dcm');
>> I=rgb2gray(I);
??? Error using ==> rgb2gray>parse_inputs at 82
MAP must be a m x 3 array.

Error in ==> rgb2gray at 35
X = parse_inputs(varargin{:});

Answer 1

[Chandra Kurniawan]

Please tell me the size of your dicom image by typing

size(I) in command window.

[Usama Javed]

512 * 512

[Chandra Kurniawan]

Very clear.

You cannot perform 'rgb2gray' to this image.

Because the size is already 2 dimentional.

No other way.

[Usama Javed]

actually i am applying gabor filter to dicom image by this code..

I = dicomread('\C:\Users\Asad\Documents\MATLAB\1.dcm');

%I=rgb2gray(img);

[G,gabout] = gaborfilter1(I,.9,10,16,pi/3);

will there be any effect on my output image if i am not applying rgb2gray....

[Chandra Kurniawan]

It seem that gaborfilter1 is not built-in matlab function.

So, you can verify to the author what is input image for gaborfilter1.

Is it two-dimensional arrays?

If yes, then without performing 'rgb2gray', the output should be correct.

[Usama Javed]

al right thanks..... :)