2019 Volume 16 Issue 1 Pages 20181019
As a new approach to finding integer motion vectors in SCC, hash-based searches have been proposed recently. In the paper we propose an improved search algorithm for integer motion estimation (IME) that employs hash-based search only for 8 × 8 coding units (CUs) and bottom-up search for larger CUs. Furthermore, it updates the hash function and hash table for each CTU to improve coding efficiency and reduce search complexity. According to simulation results, the proposed algorithm provides similar or better coding performance for screen contents while keeping the complexity at a lower level and constant compared with the reference algorithms.
