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山东大学学报（理学版） ›› 2016, Vol. 51 ›› Issue (3): 122-131.doi: 10.6040/j.issn.1671-9352.0.2015.431

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一种基于两视点DIBR的改进虚拟视点合成方法

王路1,赖春露2*   

  1. 1.山东大学(威海)网络与信息管理中心, 山东 威海 264209;2.哈尔滨工业大学(威海)信息与电气工程学院, 山东 威海 264209
  • 收稿日期:2015-09-04 出版日期:2016-03-20 发布日期:2016-04-07
  • 通讯作者: 赖春露(1989— ),女,助理工程师,硕士研究生,研究方向为通信与信息处理. E-mail:laicl_ruby@hitwh.edu.cn E-mail:wanglu@sdu.edu.cn
  • 作者简介:王路(1988— ),男,助理工程师,硕士研究生,研究方向为通信与信息处理. E-mail:wanglu@sdu.edu.cn
  • 基金资助:
    国家自然科学基金资助项目(61573123,61304142)

A modifiedtwo-viewpoint DIBR based virtual view synthesis method

WANG Lu1, LAI Chun-lu2*   

  1. 1. Network and information management center, Shandong University(Weihai), Weihai 264209, Shandong, China;
    2. School of Information and Electrical Engineering, Harbin Institute of Technology at Weihai, Weihai 264209, Shandong, China
  • Received:2015-09-04 Online:2016-03-20 Published:2016-04-07

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摘要： 虚拟视点合成是裸眼3D电视的关键技术,而基于深度的图像渲染(depth-image-based rendering,DIBR)则是一种经典的虚拟视点合成方法。为解决经典DIBR方法存在的空洞问题,提高虚拟视点图像质量,提出了一种基于DIBR的改进虚拟视点合成方法。首先,只在深度边缘处进行深度图的预处理,这可减少空洞数量且不产生大的几何失真;其次,为得到既没有伪影也没有大空洞的虚拟视点图像,提出了基于距离与深度的图像融合方法,并在融合左右两侧参考视点目标图像前,对其空洞掩膜图进行膨胀;最后,利用逐层收缩的融合后空洞填充方法对剩余小空洞进行迭代填充。实验的主观质量与客观评价都显示本文方法能够取得令人满意的结果。

关键词: 虚拟视点, 图像融合, 图像渲染

Abstract: The depth-image-based rendering(DIBR)is a classical virtual view synthesis technique which has been regarded as one of the most crucial techniques for the naked eye three-dimensional television. In order to fill the holes existed in the virtual images obtained by DIBR and thus to improve the quality of the images, a modified two-viewpoint DIBR based virtual view synthesis method is wasproposed. To prevent the image from severe geometry distortions while the number of holes being reduced, only those areas of the depth image with sudden changes on the depth value were preprocessed. In order to obtain virtual images without ghosting errors and large holes, the two virtual images generated from different viewpoints were dilated at first and then merged into one using a distance-and-depth based image blending algorithm proposed in this paper. To fill the residual holes after the image fusion, a shell-by-shell filling method was also presented.Experimental results show that the proposed method can obtain satisfactory performance in both subjective quality and objective evaluation.

Key words: virtual view, image blending, image rendering

中图分类号: 

  • TN911.73
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