Inter-frame optimization of transform coefficient selection in hybrid video coding

We propose a novel strategy of selecting transform co-efficient levels considering inter-frame dependencies that are introduced by motion compensation in hybrid video coding. We use a linear model of the dependencies between frames and a simplified rate model that enables us to calculate transform coefficients via a quadratic program. Our simulation results using the video coding standard H.264/AVC show coding gains of up to 1.4 dB in comparison to the quantization strategy specified in the test model of H.264/AVC.