Region-based weighted prediction with improved global brightness detection for H.264 Encoder

Abstract- This paper presents an efficient reg ion-based WP (weighted prediction) with improved global brightness change detection for real-time H.264 encoder. We improve WP for local brightness changes using the reference reordering, without additional memory bandwidth and computation for ME (motion estimation). A brute force way is choosing the best reference index that minimizes MV cost after performing ME with two references separately. However, it doubles the ME computation too. To reduce the computation, we propose the following MB-based WP