计算机应用 ›› 2012, Vol. 32 ›› Issue (01): 238-240.DOI: 10.3724/SP.J.1087.2012.00238

• 图形图像技术 • 上一篇    下一篇

基于Quaternion-Gabor小波运动估计的深度图获取技术

罗桂娥1,2,徐运彬2   

  1. 1. 中南大学
    2. 中南大学 信息科学与工程学院,长沙 410083
  • 收稿日期:2011-06-28 修回日期:2011-08-16 发布日期:2012-02-06 出版日期:2012-01-01
  • 通讯作者: 徐运彬
  • 作者简介:罗桂娥(1962-),女,湖南株洲人,教授,博士研究生,主要研究方向:图像信号处理、立体视频信号处理、智能仪器;徐运彬(1986-),男,湖南邵阳人,硕士研究生,主要研究方向:数字图像处理、软件设计。
  • 基金资助:

    国家自然科学基金重大专项(90820302);国家博士点基金资助项目(200805330005)

Depth map acquisition technique based on Quaternion-Gabor wavelet motion estimation

LUO Gui-e1,2,XU Yun-bin2   

  1. 1.
    2. School of Information Science and Engineering, Central South University, Changsha Hunan 410083, China
  • Received:2011-06-28 Revised:2011-08-16 Online:2012-02-06 Published:2012-01-01
  • Contact: XU Yun-bin

摘要: 深度图是“二维视频+深度图”格式3D显示器的关键技术所在。在对四元数及Gabor滤波器进行研究的基础上提出了基于Quaternion-Gabor小波运动估计的深度图获取技术。通过计算普通视频运动图像的全局运动向量,估计出图像背景运动模型,获得图像运动场,最后分离出图像的前景与背景,从而得到图像的深度图。将普通的Gabor滤波器扩展到Quaternion-Gabor滤波器,不仅把图像变换到频率域获得额外的信息,而且可以对每个像素的RGB分别独立滤波。实验结果表明,使用Quaternion-Gabor小波运动估计方法得到的深度图变化很平滑,边缘更突出。

关键词: 二维视频, 深度图, 四元数, 小波, 运动估计

Abstract: Depth map is the key technology of “2D video+depth map” for 3D display. On the basis of the research into quaternion and Gabor filter, the depth map acquisition technique based on Quaternion-Gabor wavelet motion estimation was proposed. Through calculating the global motion vector of image from ordinary video, the background motion model was estimated and the motion field was gotten. In the end, the foreground and the background of the image were isolated, and the depth map of the image was obtained. Through expanding ordinary Gabor filter to Quaternion-Gabor filter, it can not only get extra information through transforming the picture to frequency domain, but also can get independent filter to each pixel's RGB. The experimental results show that the changes of depth map obtained by Quaternion-Gabor wavelet motion estimation will be very smooth and edges will be more outstanding.

Key words: 2D video, depth map, quaternion, wavelet, motion estimation

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