please tell me about image interpolation.

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sandeep kumar
sandeep kumar 2015-8-28
评论： Walter Roberson 2015-8-28
i tried imresize function but in that i dint understand
In some paper, authors used image interpolation by factor alpha to increase or decrease the size of the image. please tell how this this alpha factor used in an image interpolation

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Walter Roberson
Walter Roberson 2015-8-28
scale = alpha;
newimage = imresize(YourImage, scale);
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sandeep kumar
sandeep kumar 2015-8-28
i referred one paper, in that he has given interpolation with factor 2 and interpolation with factor alpha/2. I tried implementing that, by using imresize function to enhance the image from 263X263 resolution to 512X512 resolution, but i couldn't understand how to give value to alpha.
Walter Roberson
Walter Roberson 2015-8-28
MyImage = rand(263,263,3);
biggerImage = imresize(MyImage, 2);
smallerImage = imresize(MyImage, 1/2);
Image512a = imresize(MyImage, [512 512]);
Image512b = imresize(MyImage, 512/263);

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