Examples
idct2(3, 4, 6) ans = 2.811261 0.612372 -0.525856 0.250601 0.612372 -0.086516 |  |  |
This function computes the inverse 2-D discrete cosine transform of input matrix.
Y = idct2(X) Y = idct2(X, M, N) Y = idct2(X, [M, N])
Matrix or integer
If specified Matrix X is padded with M rows and N columns.
This function computes the inverse 2-D discrete cosine transform of matrix X. If M and N are specified, the input is either padded or truncated to have M rows and N columns.
idct2(3, 4, 6) ans = 2.811261 0.612372 -0.525856 0.250601 0.612372 -0.086516 | | |