基于分层图像融合的虚拟视点绘制算法

doi:10.19678/j.issn.1000-3428.0058057

摘要/Abstract

摘要： 针对虚拟视点绘制过程中出现的重叠和空洞问题，提出一种新的虚拟视点绘制算法。通过形态学操作对三维图像变换后出现的空洞进行膨胀来消除伪影瑕疵，根据深度信息对左、右虚拟视点图像进行前景和背景分割，利用线性加权法对分割后的前景图像和背景图像进行分层融合解决像素重叠问题，对分层融合后的背景图像进行空洞填充并与前景图像融合得到虚拟视点图像。实验结果表明，与经典的Criminisi算法相比，该算法PSNR值提高了1.75 dB，具有较高的绘图质量。

关键词: 虚拟视点, 深度信息, 前景和背景分割, 分层融合, 三维图像变换

Abstract: To address the overlaps and holes in virtual viewpoint rendering,this paper proposes a new virtual viewpoint rendering algorithm based on hierarchical image fusion.The algorithm performs morphological operation on the holes generated by 3D image transformation to expand them,thus eliminating artifact defects.Then according to the depth information,the foreground and background of the left and right virtual viewpoint images are segmented.The linear weighting method is used to implement hierarchical fusion for segmented foreground and background images to solve pixel overlap.Holes filled,the background image is fused with the foreground image to obtain the virtual viewpoint image.Experimental results show that the PSNR of the proposed algorithm is 1.75 dB higher than that of the Criminisi algorithm.

Key words: virtual viewpoint, depth information, foreground and background segmentation, hierarchical fusion, three-dimensional image transformation

中图分类号:

TP391

蔡李美, 李新福, 田学东. 基于分层图像融合的虚拟视点绘制算法[J]. 计算机工程, 2021, 47(4): 204-210.

CAI Limei, LI Xinfu, TIAN Xuedong. Virtual Viewpoint Rendering Algorithm Based on Hierarchical Image Fusion[J]. Computer Engineering, 2021, 47(4): 204-210.

https://www.ecice06.com/CN/Y2021/V47/I4/204

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