A non-coverage field model for improving the rendering quality of virtual views

Changjian Zhu, Li Yu, Zixiang Xiong

Research output: Contribution to journalArticleResearchpeer-review

3 Citations (Scopus)

Abstract

Rendering quality optimization theory is one of the most basic and fascinating components of image-based rendering (IBR). The rendering quality of virtual views is related to the information in the source images. Capturing the image information depends on the geometric configuration of the camera (GCC) and, in particular, the positions and shooting directions of the cameras. Therefore, the rendering quality of virtual views can be improved by optimizing the GCC. This paper investigates the relationship between the GCC and the geometric configurations of the virtual view (GCVV). The influence of the GCC on the rendering quality is also analyzed. Based on the relationships among the GCC, GCVV and rendering quality, a mathematical model of the non-coverage field (NCF) is proposed to quantify the rendering quality. The performance of the NCF is also analyzed using a set of GCVVs and GCCs. Furthermore, an optimization algorithm based on the NCF that simultaneously optimizes the position and direction of the GCC is presented. The proposed technique can be applied to obtain the optimal rendering quality of IBR for the linear case of camera positions and virtual views. Finally, experimental results are presented and compared with the theoretical results.

Original languageEnglish
Pages (from-to)738-753
Number of pages16
JournalIEEE Transactions on Multimedia
Volume20
Issue number3
DOIs
Publication statusPublished - 2018

Keywords

  • camera
  • geomettic configuration
  • Image-based rendering
  • rendering quality assessment
  • virtual view

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