华中科技大学学报（自然科学版）Issue(9)：33-37,5.DOI:10.13245/j.hust.140908
一种高效的三维视频深度图帧内编码算法
Efficient intra coding algorithm for depth map in 3D video
摘要
Abstract
Towards the depth map compression issue in 3D video coding ,an efficient depth map intra coding algorithm was proposed .By taking full advantage of the typical feature of the depth maps ,the proposed method employed a two-level transform to reduce the data volume of the original depth maps .First ,based on the fact that the depth map contained large homogeneous areas and the occur-rence of edges in depth map was highly correlated to the corresponding texture image ,the original depth map was resized by superpixel segmentation and pixel assignment strategy .Then ,based on the feature that gray level of the depth map was far less than 256 ,the gray level transform was conducted on the resized depth map through histogram method .Finally ,in order to protect the edges of the depth map ,the two-level transformed depth map was compressed by H .264 lossless intra coding .The experimental results demonstrate that the proposed method can significantly improve the rate-distor-tion performance of the depth map coding and the subjective quality of the virtual view s .关键词
三维视频/深度图/帧内编码/超像素分割/灰度变换Key words
3D video/depth map/intra coding/superpixel segmentation/gray level transform分类
信息技术与安全科学引用本文复制引用
罗雷,蒋荣欣,田翔,陈耀武..一种高效的三维视频深度图帧内编码算法[J].华中科技大学学报（自然科学版）,2014,(9):33-37,5.基金项目
国家自然科学基金资助项目（40927001）；浙江科学技术创新团队项目（2011R09021-02）． （）
