Depth map processing

Depth map

 Depth map is an image that contains information relating to the distance of the surface of scene objects from a view point.

Pre-/Post-processing to improve the coding  performance of multiview plus depth map 

In this work, we propose new system for improving coding performance of multi-view and depth map (MVD) system using properties of depth map. The proposed method consists of two stages. In the pre-processing stage, dept map is filtered selectively to reduce the bit-rate cost while minimizing quality degradation. In the post-processing stage, decoded depth map is restored.

[​D. Lee, Y. Yang, and B. T. Oh, “Pre-/post-processing to improve the coding performance of multiview plus depth map,” Signal Processing: Image Communication, Oct. 2017.]
[D. Lee, Y. Yang, and B. T. Oh,“Enhancement of depth map post-processing for 3D video coding,” International Workshop on Advanced Image Technology, 2016.]

  Boundary artifacts reduction in view synthesis of 3D video system

In this work, we propose boundary artifacts reduction method for synthesized view in 3D video system. In this method, we analysis the property of boundary artifacts caused by compression noise. And, we set the convex set in pixel and frequency domain. Then, we find sub-optimal solution using projection onto convex sets method

[이도훈, 양윤모, 오병태, “3차원 비디오의 합성영상 경계 잡음 제거,” 방송공학회논문지, Nov. 2016.]
[이도훈, 양윤모, 오병태, “3차원 비디오의 합성영상 경계 잡음 제거,” 한국방송미디어공학회 하계학술대회, 2016.]
[이도훈, 양윤모, 오병태, “깊이영상 해상도 조절에 따른 3차원 비디오 부호화 성능 분석,” 한국방송공학회 하계학술대회, 2015.]
[이도훈, 오병태, “다시점 영상 부호화 효율 향상을 위한 전처리 및 후처리 기법,” 영상처리 및 이해에 관한 워크샵, 2015.]