1. A method of creating a pattern of bit-accurate film grain, comprising the steps of: (a) establishing a set of bit-accurate transformed coefficients by scaling a floating point version of a Discrete Cosine Transformed (DCT) matrix of coefficients; (b) frequency filtering the matrix of bit-accurate transformed coefficients; and (c) performing a bit-accurate inverse transformation on the frequency filtered transformed coefficients to yield a bit-accurate film grain pattern for blending in an image; and (d) automatically repeating steps (a) - (c) for different sizes and shapes of film grain.