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Visual Display Units (VDUs), capable of displaying video data at HighDefinition (HD) and Ultra HD (UHD) resolutions, are frequently employed in avariety of technological domains. Quantization-induced video compressionartifacts, which are usually unnoticeable in low resolution environments, aretypically conspicuous on high resolution VDUs and video data. The defaultquantization matrices (QMs) in HEVC do not take into account specific displayresolutions of VDUs or video data to determine the appropriate levels ofquantization required to reduce unwanted compression artifacts. Therefore, wepropose a novel, adaptive quantization matrix technique for the HEVC standardincluding Scalable HEVC (SHVC). Our technique, which is based on a refinementof the current QM technique in HEVC, takes into consideration specific displayresolutions of the target VDUs in order to minimize compression artifacts. Weundertake a thorough evaluation of the proposed technique by utilizing SHVC SHM9.0 (two-layered bit-stream) and the BD-Rate and SSIM metrics. For the BD-Rateevaluation, the proposed method achieves maximum BD-Rate reductions of 56.5% inthe enhancement layer. For the SSIM evaluation, our technique achieves amaximum structural improvement of 0.8660 vs. 0.8538.

Minimizing Compression Artifacts for High Resolutions with Adaptive Quantization Matrices for HEVC