How to reconstruct a original 2D image from the 1D matrix?

upto now I convert 2D image into 1D image matrix.I want to reconstruct into 2D image.I have a struggle on this.can you please help me?

[Bérenger Mpamy]

A is your 1D image matrix

B= reshape(A,[size,size]); %size could be 256*256 or 512*512

Answer 1

[KSSV]

You need to reshape your 1D vector into mXn matrix. Have a look on reshape function.

[PLACEIUS NISHIGA G]

yes sir,I have done the reshape function.finally I got the encoded image.I have a trouble on reconstruct it.

[KSSV]

What trouble?

[PLACEIUS NISHIGA G]

I dont't know how to reconstruct the encoded share.can you please give me the code for decode.