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how i can reshape image from original size to new size

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Ahmed almansory
Ahmed almansory 2013-8-23
编辑： Deokar Kaustubh Santosh 2018-10-8
hello
i want to reshape image (matrix) from 6x5000 to another size must be power of 2 such as 64x64,128x128 or 256x256 to do some calculation then return image to original size.
(these calculation must contain all pixels in original image)
thanks

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回答（3 个）

David Sanchez
David Sanchez 2013-8-23
The resizing of the image comes to a price, and that's a loss of information. You can resize your image, do whatever you want to it, but then, you can not expect to go back to the original size (bigger) and get back the same original image with the same information, or even worse, the extra information obtained with the process extended to the original image.
Image Analyst
Image Analyst 2013-8-23
编辑：Image Analyst 2013-8-23
Have you seen the imresize() function in the Image Processing Toolbox?
image64 = imresize(originalImage, [64, 64]);
  2 个评论
Ahmed almansory
Ahmed almansory 2013-8-23
Yes I've seen, but this function does not take all image pixels means i have 6x5000 pixels (irregular dimension.... i want to apply wcompress function on this image ,this function take power 2 dimention. thanks for your replay
Image Analyst
Image Analyst 2013-8-23
It can take all pixels into consideration when you do some resizing (i.e. bicubic interpolation) but does not under some other options ('nearest'). So I don't know why you say that.
I've never heard of the wcompress() function.

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Deokar Kaustubh Santosh
编辑：Deokar Kaustubh Santosh 2018-10-8
image='gray.png';
a=imread(image);
b=imresize(a,[256 256]);
imshow(b);

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