In this paper, we propose an improved low complexity algorithm for the scalable extension of the HEVC (SHVC) using the information of Rate-Distortion cost and the coding unit (CU) size in the base layer. The proposed algorithm is used for inter layer reference prediction (ILRP) which is defined as a new mode in SHVC. Firstly, the relationship between of the different resolutions is evaluated when using ILRP mode. Next, based on the evaluation results, an improved algorithm focused on the complexity reduction of the enhancement layer is proposed. The proposed algorithm is evaluated by the reference software of SHVC. The simulation results show that the proposed algorithm can achieve over 60 computation complexity reduction comparing to the original SHVC algorithm.
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