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Re-sampling Images in Matlab

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Ankit Verma
Ankit Verma 2012 年 4 月 6 日
I want to re-sample the remotely sensed images which are usually very large from 30m to 15m.Does this simply means re-sizing it using imresize function or is their any other method for re-sampling such images in Matlab??
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Ankit Verma
Ankit Verma 2012 年 4 月 7 日
Sorry for the confusion it is meters not megapixels.
Walter Roberson
Walter Roberson 2012 年 4 月 7 日
You want to re-sample from 30 meters resolution to 15 meters resolution? That is, you want to double the resolution of the images? Double _exactly_ ?

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Walter Roberson
Walter Roberson 2012 年 4 月 6 日
There are methods involving fft2() and ifft2(); there are methods involving wavelets; there are methods involving extracting subsections of the array; there are methods involving interp2(); there are probably other methods.
Myself, I would only bother to consider alternatives to imresize() if I was doing straight-forward half-resolution, or if I had more time (to do the programming) than I had money (to purchase the Image Processing Toolbox.)

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