thumb|The DCT transforms an 8×8 block of input values to a linear combination of these 64 patterns. The patterns are referred to as the two-dimensional DCT basis functions, and the output values are referred to as transform coefficients. The horizontal index is and the vertical index is .
thumb|The DCT transforms an 8×8 block of input values t.o a linear combination of these 64 patterns The patterns are referred to as the two-dimensional DCT basis functions, and the output values are referred to as transform coefficients. The horizontal index is and the vertical index is .