Preprint Article Version 1 This version is not peer-reviewed

Discrete Sine Transform-Based Interpolation Filter for Video Compression

Version 1 : Received: 14 October 2017 / Approved: 14 October 2017 / Online: 14 October 2017 (13:53:17 CEST)

How to cite: Kim, M.; Lee, Y. Discrete Sine Transform-Based Interpolation Filter for Video Compression. Preprints 2017, 2017100097 (doi: 10.20944/preprints201710.0097.v1). Kim, M.; Lee, Y. Discrete Sine Transform-Based Interpolation Filter for Video Compression. Preprints 2017, 2017100097 (doi: 10.20944/preprints201710.0097.v1).

Abstract

High Efficiency Video Coding (HEVC) uses an 8-point filter and a 7-point filter, which are based on the discrete cosine transform (DCT), for the 1/2-pixel and 1/4-pixel interpolations, respectively. In this paper, discrete sine transform (DST)-based interpolation filters (IF) are proposed. The first proposed DST-based IFs (DST-IFs) use 8-point and 7-point filters for the 1/2-pixel and 1/4-pixel interpolations, respectively. The final proposed DST-IFs use 12-point and 11-point filters for the 1/2-pixel and 1/4-pixel interpolations, respectively. These DST-IF methods are proposed to improve the motion-compensated prediction in HEVC. The 8-point and 7-point DST-IF methods showed average BD-rate reductions of 0.7% and 0.3% in the random access (RA) and low delay B (LDB) configurations, respectively. The 12-point and 11-point DST-IF methods showed average BD-rate reductions of 1.4% and 1.2% in the RA and LDB configurations for the Luma component, respectively.

Subject Areas

HEVC; Interpolation filter; Sinc; DCT (discrete cosine transform); DST (discrete sine transform)

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