In this paper, we show a class of relationships
which link Discrete Cosine Transforms (DCT) and Discrete Sine
Transforms (DST) of types V, VI, VII and VIII, which have
been recently considered for inclusion in the future video coding
technology. In particular, the proposed relationships allow to
compute the DCT-V and the DCT-VIII as functions of the
DCT-VI and the DST-VII respectively