Analysis and VLSI Implementation of EWA Rendering for Real-Time HD Video Applications
Pierre Greisen, Michael Schaffner, Simon Heinzle, Marian Runo, Aljoša Smolić, Andreas Peter Burg, Hubert Kaeslin, Markus H. Groß · IEEE Transactions on Circuits and Systems for Video Technology · 2012
Nonlinear image warping or image resampling is a necessary step in many current and upcoming video applications, such as video retargeting, stereoscopic 3-D mapping, and multiview synthesis. The challenges for real-time resampling include not only image quality but also available energy and computational power of the employed device. In this paper, we employ an elliptical-weighted average (EWA) rendering approach to 2-D image resampling. We extend the classical EWA framework for increased visual quality and provide a very large scale integration architecture for efficient view rendering. The resulting architecture is able to render high-quality video sequences in real time targeted for low-power applications in end-user display devices.