| 摘要 |
The invention relates to a method for video coding a sequence of digitized images comprising predicting the contents of each image taking into account a rate distortion optimization criterion being dependent on a Lagrange multiplier; transforming the prediction error resulting from predicting step into a plurality of transformed residual coefficients in each image; quantizing the transformed residual coefficients in each image; wherein the Lagrange multiplier is determined for each image based on a probability distribution of the transformed residual coefficients of the respective image, the probability distribution having its maximum probability at its mean zero and being formed such that the probabilities decrease to zero from the mean to large absolute values of the transformed residual coefficients, whereby the variance of the probability distribution is calculated from the plurality of transformed residual coefficients in the respective image.
|
