Quality Enhancement for Hybrid 3DTV with Mixed Resolution Using Conditional Replenishment Algorithm

Abstract

This paper proposes a conditional replenishment algorithm (CRA) to improve the visual quality (where spatial resolutions of the left and right views are mismatched) of a hybrid stereoscopic 3DTV that is based on the ATSC‐M/H standard. So as to generate an enhanced view, the CRA is to choose the better substitute among a disparity‐compensated view with high quality and a simply interpolated view. The CRA generates a disparity map that includes modes and disparity vectors as additional information. It also employs a quad‐tree structure with variable block size by considering the spatial correlation of disparity vectors. In addition, it takes advantage of the disparity map used in a previous frame to keep the amount of additional information as small as possible. The simulation results show that the proposed CRA can successfully improve the peak signal‐to‐noise ratio of a poor‐quality view and consequently have a positive effect on the subjective quality of the resulting 3D view.

The Reduction of Blocky Artifacts in Conditional Replenishment Algorithm for SC-MMH 3DTV Systems

“…1. Block diagram of SC-MMH encoder system [1] 상과 부가영상 사이에 존재하는 화질 차이에 따른 영향을 최소화하기 위해 제안되었으며, 2015년에 ATSC에 의해 표 준으로 채택되었다 [5,6] . 를 기본으로 하되 이를 조건부대체 알고리즘에 적합 하게 변형하여 사용한다 [8] .…”

Fast Algorithm for Disparity Estimation in ATSC-M/H based Hybrid 3DTV

“…그러나 해상도의 차이가 너무 심하거나 부호화에 따른 화질 저하 가 두드러진다면 BSE에 의해서도 화질 차이를 극복하지 못할 수 있기 때문에 이러한 경우에는 우영상의 화질을 개 선할 필요가 있다. 이를 위해 조건부 대체 알고리즘(CRA, Conditional Replenishment Algorithm)이 제안 되었다 [6] . [9] .…”