Due to the 3 components representation of a color image

it's essential that we should not only take into account the spatial and structural redundancies

but also fully exploit the spectral correlations present in color image data. In this paper

we present a 3D DCT algorithm for the compression coding of color image

which is based on 3D matrix model. All the color image components are jointly transform compressed and the redundancies are effectively reduced. Simulation results demonstrate good quality reproduction and high compression ratio of this method

which is also simple and convenient.