Improved update operators for lifting-based motion-compensated temporal filtering

2005 IEEE Signal Processing Letters  
Motion-compensated temporal filtering (MCTF) is an essential ingredient of the recently developed wavelet-based scalable video coding schemes. Lifting implementation of these decompositions represents a versatile tool for spatiotemporal optimizations, and several improvements have already been proposed in this framework. In this paper, we propose new spatiotemporal update operators based either on weighted averages of multiple connected pixels or on nonlinear filtering of these pixels. We
more » ... trate the improved performance of the proposed operators, both theoretically and experimentally. Index Terms-Motion-compensated temporal filtering, nonlinear operators, spatiotemporal update operator, temporal lifting.
doi:10.1109/lsp.2004.840877 fatcat:43vvpdnalrddzl4kpbsld537ny