A comparison of the Hartley, Cas-Cas, Fourier, and discrete cosine transforms for image coding
M.G. Perkins · IEEE Transactions on Communications · 1988
The coding method used for the comparison utilizes a marginal bit-allocation scheme and Lloyd-Max quantizer. Gamma, Laplacian, and Gaussian models are compared for the distribution of the transform coefficients. The discrete cosine transform outperforms the other three transforms based on the mean-square quantization error. >