Discrete Cosine Transform(DCT) can decrease the relativity among the images

but we didn't know the muldimension DCT accurately. In this paper

three dimensional Discrete Cosine Transform(DCT) has been researched

its calculate method

transform and inverse transform were given

and any sizes of three dimensional function f(x

y

z) DCT is proposed

that must be cube before. As we known

it is identity physics model unify reflection into that of color image's three frame

possess same texture

same fringe and same gray change

the information of the each frame almost could reflect the source image except color

the vision similitude are very strong. In other methods

R

G

B data were transformed into Y

Cr

and Cb to decrease the color information. It is clear that if we encode Y Cr Cb data separately

among each component potential relativity can't be decreased enough. So we regard R

G

and B as a whole

transform them in the same time with three dimensional DCT. It can decrease relativity between frames than before. Simulation results demonstrate good reconstruction image quality and high compression ratio. It has good compatible with JPEG and MPEG standard.