计算机应用 ›› 2012, Vol. 32 ›› Issue (09): 2576-2579.DOI: 10.3724/SP.J.1087.2012.02576

• 图形图像技术 • 上一篇    下一篇

基于加速鲁棒特征的广角图像自动拼接校正算法

王铁建1,2*,刘艳丽3   

  1. 1.郑州成功财经学院 信息工程系,河南 巩义 451200;
    2.武汉大学 计算机学院,武汉 430072;
    3.河南工业大学 信息科学与工程学院,郑州 450000
  • 收稿日期:2012-03-05 修回日期:2012-05-28 发布日期:2012-09-01 出版日期:2012-09-01
  • 通讯作者: 王铁建
  • 作者简介:王铁建(1982-),男,河南周口人,博士研究生,主要研究方向:虚拟现实、计算机图形学、数字图像处理、图像拼接; 刘艳丽(1979-),女,河南南阳人,硕士研究生,主要研究方向:虚拟现实、数字图像处理。

Automatic stitching and regulating algorithm for wide-angle images based on speed-up robust feature

WANG Tie-jian1,2*,LIU Yan-li3   

  1. 1.Department of Information Engineering,Zhengzhou Chenggong University of Finance and Economics,Gongyi Henan 451200,China;
    2.Computer School,Wuhan University,Wuhan Hubei 430072,China;
    3.College of Information Science and Engineering,Henan University of Technology,Zhengzhou Henan 450000,China
  • Received:2012-03-05 Revised:2012-05-28 Online:2012-09-01 Published:2012-09-01
  • Contact: Tie-Jian WANG

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摘要： 广角图像在全景图拼接中优势明显,然而,由于广角图像存在严重的透视畸变,往往导致拼接的效果不理想,甚至导致拼接失败。针对广角图像拼接中的透视畸变问题,提出一种广角图像自动拼接、校正算法。先计算出待拼接广角图像的特征点匹配对,求出图像拼接矩阵,对广角图像进行拼接;然后,根据图像采集时的镜头旋转角度计算出图像校正矩阵,对拼接后的全景图进行透视畸变校正。实验结果表明,基于该算法得到的全景图能够有效地消除透视畸变,达到较好的拼接效果。

关键词: 基于图像渲染, 加速鲁棒特征, 广角图像拼接, 拼接矩阵, 校正矩阵

Abstract: Wide-angle images are very helpful when stitching panoramas. However, the severe deform in wide-angle images usually results in stitching failure. Focusing on such a problem, an automatic stitching and regulating algorithm for wide-angle images was proposed. The matching pairs of feature points were calculated to obtain the stitching matrix at first in order to stitch wide-angle images. Then the correcting matrix for the image was calculated based on the rotating angle of the lens so that a regulation could be made on the perspective distortion. It is shown from experiments that the perspective distortion can be effectively removed from the panoramic view obtained with the presented algorithm.

Key words: Image Based Rendering (IBR), Speed-Up Robust Feature (SURF), wide-angle image stitching, stitching matrix, correcting matrix

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