One dimensional Dicrete Cosine Transform. More...
Functions | |
void | itpp::dct (const vec &in, vec &out) |
Discrete Cosine Transform (DCT) | |
vec | itpp::dct (const vec &in) |
Discrete Cosine Transform (DCT) | |
void | itpp::idct (const vec &in, vec &out) |
Inverse Discrete Cosine Transform (IDCT) | |
vec | itpp::idct (const vec &in) |
Inverse Discrete Cosine Transform (IDCT) |
One dimensional Dicrete Cosine Transform.
The functions
X = dct(x)
and
x = idct(X)
are the dicrete cosine and inverse discrete cosine transforms of size N defined as:
where for
and
for
.
The implementation is built upon one of the following libraries:
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