I have a folder of 20 images that I need to shrink down to the size of the smallest image.

Hello.

I have a folder of 20 images that I need to shrink down to the size of the smallest image (smallest of those 20 in the folder). I am not allowed to to use "imresize" or "imcrop" and I am having a lot of trouble with it. The smallest image is 127 x 129. Please help!

Thank you!

[KSSV]

How about using interp2?

[Image Analyst]

Why can't you use those functions?????

Answer 1

[Vandana Rajan]

Hi,

You may try implementing some image resampling techniques. The same algorithm can be used for shrinking as well as enlarging an image by using proper scale factors and pixel locations. A quick search gave me the following useful links

1. https://clouard.users.greyc.fr/Pantheon/experiments/rescaling/index-en.html

2. http://stackoverflow.com/questions/26142288/resize-an-image-with-bilinear-interpolation-without-imresize

Answer 2

[Walter Roberson]

One approach

   ifft2( fft( fft( TheImage, TargetRows, 2), TargetColumns ) )

[Vandana Rajan]

This is so easy :)

But this gives cropped image and not a shrunk image, right?