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1. 中国科学院 长春光学精密机械与物理研究所,吉林 长春,中国,130033
2. 中国科学院大学 北京,中国,100049
3. 长春理工大学,吉林 长春,130022
[ "胡汉平(1980-),男,湖北襄阳人,博士研究生,工程师,2003年、2009年于长春理工大学分别获得学士、硕士学位,主要从事数字图像处理、计算机视觉等方面的研究。E-mail:custhhp@163.com" ]
[ "朱明(1964-),男,江西南昌人,研究员,博士生导师,1985年于南京航空航天大学获学士学位,1991年于中国科学院长春光学精密机械与物理研究所获得硕士学位,主要从事视频图像处理和光电成像测量技术以及目标识别与电视跟踪技术方面的研究。E-mail:zhu-mingca@163.com" ]
收稿日期:2014-09-25,
修回日期:2014-12-05,
纸质出版日期:2015-03-25
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胡汉平, 朱明,. 基于种子点传播的快速立体匹配[J]. 光学精密工程, 2015,23(3): 887-894
HU Han-ping, ZHU Ming,. Fast stereo matching based on seed pixel propagation[J]. Editorial Office of Optics and Precision Engineering, 2015,23(3): 887-894
胡汉平, 朱明,. 基于种子点传播的快速立体匹配[J]. 光学精密工程, 2015,23(3): 887-894 DOI: 10.3788/OPE.20152303.0887.
HU Han-ping, ZHU Ming,. Fast stereo matching based on seed pixel propagation[J]. Editorial Office of Optics and Precision Engineering, 2015,23(3): 887-894 DOI: 10.3788/OPE.20152303.0887.
针对计算机视觉中的对应点误匹配问题
提出了一种基于种子点传播的快速局部立体匹配算法来进一步提高匹配算法的运行效率。该算法首先利用Canny算子提取图像边缘
结合边缘信息构造动态匹配窗口
以克服固定窗口对匹配带来的不利影响; 然后利用AD-Census联合匹配代价在动态窗口上进行代价聚集
用WTA搜索策略得出初始视差图
对视差值进行筛选以确定种子点;随后利用像素间颜色差异将种子点的视差值传递给周围非种子点;最后采用区域投票和局部校正方式对视差值求精
进而获取精确的稠密视差图。实验结果表明
该算法可对Middlebury测试图生成高质量的视差图。与目前较新的局部立体匹配算法相比
其运行速度提高了1.8倍
满足了实际应用对速度和精度的要求
具有较高的实用价值。
For the mismatching problem in computer vision
a fast local stereo matching algorithm based on seed pixel propagation was proposed to further improve the efficiency of matching algorithm. Firstly
the edge of an image was extracted using Canny operator in order to overcome the adverse influence of a fixed window on stereo matching by combining with the edge information to construct a dynamic matching window. Then
the AD-Census combined matching costs was used to realize the cost aggregation on the dynamic window
the initial disparity map was obtained by WTA search strategy and the disparity was filtrated to get seed pixels. Furthermore
the color difference between pixels was used to propagate the disparity of seed pixels to around unseeded pixels. Finally
the region voting and local rectification were adopted to refine the disparity and to get the accuracy dense disparity map. Experimental results show that the algorithm provides high-quality disparity map on Middlebury data set
the computing time is accelerated by 1.8 times as compared with that of newer local matching algorithms at present. It meets the demands of actual applications for accuracy and speeds.
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