inverse quantization in simulink

Hi,

I had a question regarding quantization.

I applied 2-D DCT for an image in simulink and quantized samples.

However, now I need to get back quantized samples by doing an inverse quantization. May I know how do I achieve that?

I found below answer in the Matlab Community

I think quantization physically leads to data loss that is irreversible. i.e., quantization is a means of lossy compression. So there is no way to get your unquantized data back!

Is there any indirect way to perform inverse quantization using Tranpose or inverse of DCT Matrix or supplying a code book to the quantizer/encoder block in simulink