guys, is there anyone know how to resize a symbol to a specific shape (h,w)?

thank you very much

# How to scale a symbol

**coderzbx**#1

**safrooze**#2

Your question is quite vague. So I’m going to make these assumptions: You have a symbol which represents an NDArray of shape `(H, W)`

(for example a greyscale image) and you’d like to resize this array to `(h, w)`

. For this purpose, you can use `BilinearSampler()`

.

**coderzbx**#3

Thanks for your help.

If we want to scale an NDArray, we can do it using mx.image.imresize(),

for a symbol object, I didn’t find any easy way to do this.

BilinearSampler() can do it ,but it’s a hard way.

So, I’m looking for a simple way to make it.

**safrooze**#4

`imresize`

is not an operator on NDArray, i.e. you cannot use it as part of the computational graph (no `backward()`

). It is meant to be used for data pre-processing.

There is also `ROIPooling`

which can also be used for resizing images.

**coderzbx**#5

You are right! Computational graph needs Symbols, tensorflow and caffe both can do this through resize_bilinear().

Thank you very much.