Error in deconv layer

[HosnaCSE]

Hello,

I am trying to use "convt" to deconvolute image (input size 256X256, perform max pool 4 times, so image size becomes 16X16). If I define weight as "Wzj = 0.5*randn(256,256,512,500,'single');"........it requires 62GB which is impossible array size in Matlab.

My question is at "convt" layer how I can define weight to convert pooled image (16X16) to original image size (256X256)? Any kind of help will be appreciated.

Thanks
Hosna