Some one may prefer to call it the transposed convolution, as introduced here. I'm looking forward to an implementation of the transposed convolution, in Python or C/C++. Thank you all for helping me!

Even I am searching for an implementation of transposed convolution. I could only find one in tensorflow module. I am trying to get this working for my problem.

Link to Tensor flow API for transposed convolution

If it helps, you can also use the regular 2d convolution to do transposed convolution as shown in this answer here

Let me know if you could get this thing to work :)