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Discussion Groups | Matlab DSP | resolution

Technical discussion about Matlab and issues related to Digital Signal Processing.

  

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resolution - yusra al-najjar - May 9 15:55:36 2008



            
Sir,


 


How can I change the resolution of a bitmapped image from 390x350 to 200x200 inside a matlab
.m file


 


thanks


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Re: resolution - Raja' Alomari - May 12 6:22:49 2008

Hi Yusra,
It looks like you only need to resize the image !! If that is the 
case, then use imresize:

To resize your image "IM" to the size 200x200

Result = imresize(IM, [200,200]);

Best regards,
Raja'

----------------------------------
On Fri, May 9, 2008 at 1:37 PM, yusra al-najjar <u...@yahoo.com> 
wrote
Sir,
 
How can I change the resolution of a bitmapped image from 390x350 to 
200x200 inside a matlab .m file
 
thanks


(You need to be a member of matlab -- send a blank email to matlab-subscribe@yahoogroups.com )

Re: resolution - luis...@yahoo.com - May 12 6:22:58 2008

Yusra,

you may use this function:

new_image = imresize(image, [200 200],'Antialiasing',true)
You have to set the parameter 'Antialiasing' true in order to avoid posible aliasing
(basically, it is a low-pass filtering after downsampling). 

Best regards.
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