Efficient 2-D DCT Computation from an Image Representation Point of View
George A. Papakostas, Dimitrios E. Koulouriotis, Evangelos G. Karakasis · InTech eBooks · 2009
A novel methodology that ensures the computation of 2-D DCT coefficients in gray-scale images as well as in binary ones, with high computation rates, was presented in the previous sections. Through a new image representation scheme, called ISR (Image Slice Representation) the 2-D DCT coefficients can be computed in significantly reduced time, with the same accuracy.