A Review on In-Loop Filters for HEVC and VVC Video Coding Standards

The Versatile Video Coding (VVC) standard is the modern video coding standard followed by High Efficiency Video Coding also named by HEVC/H.265 standard. The standardization committees introduced the new coding video technologies next to HEVC. At that moment, advanced generation video coding standard titled as VVC has been developed. The test model of this video coding is VTM. VVC provides 50% more-bit rate compared to HEVC with the overhead of more complexity. In this paper, different hardware architectures, steps involved, techniques and methods proposed by number of authors for in-loop filtering of VVC are summarized. To achieve both good efficiency and reduced complexity several tools must be introduced in the VVC.