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Re: about the function "imwrite"


From: Ben Abbott
Subject: Re: about the function "imwrite"
Date: Fri, 18 Nov 2011 08:47:41 -0500

On Nov 18, 2011, at 8:45 AM, Przemek Klosowski wrote:

> On 11/17/2011 04:42 PM, Yaowang wrote:
> 
>> octave:1> x=imread('1149.tiff')
>> octave:2> imshow(x)
>> octave:3> y=fft(x);
>> octave:4> imshow(y)
>> warning: imshow: only showing real part of complex image
>> octave:5> imwrite("1149.img",y)
> 
> It's the second time in few weeks when someone tries to display and save FFTs 
> of images. That doesn't make any sense to me---is there something I'm missing 
> here? Is it some kind of image processing trick that treats Fourier 
> coefficients as an image on its own?

I think you are correct.

Ben



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