垂直方向立体接缝雕刻缩放算法

发布时间：2018-04-22 02:14

本文选题：立体接缝 + 视差图　；参考：《计算机学报》2017年11期

【摘要】：立体图像缩放是图像处理领域的重要研究内容.Basha等人~([14])提出一个新颖的立体接缝雕刻(stereo seam carving)算法,但是由于无法避开立体图像左右视图中的视角外区域和被遮挡区域,Basha方法在选取水平走向立体接缝时会出现同列多像素和间隔缝隙现象.因此,Basha方法不适用于垂直方向的立体图像缩放处理.针对Basha方法的上述局限性,作者提出了一种适用于垂直方向缩放的几何一致性立体接缝雕刻(stereo seam carving)算法.首先,作者引入基于视差的实投影和虚投影两个策略,以解决Basha方法中出现的同列多像素和间隔缝隙现象,并提出了一种新的水平走向立体接缝定义.然后基于该定义,提出了一个改进的几何一致性立体接缝雕刻算法,该算法不仅保持原Basha算法在水平方向的缩放功能,同时较好地实现垂直方向的立体图像缩放.作者提供了若干实验数据说明算法是有效的.
[Abstract]:Stereo image scaling is an important research content in the field of image processing. Basha et al. ([14]) proposed a novel stereo seam engraving stereo seam carving algorithm. However, the Basha method can not avoid the out-of-angle and shaded regions in the left and right view of stereoscopic images. When the horizontal orientation of the Basha method is selected, there will be the phenomenon of multi-pixel and spacer gaps in the same column. Therefore, the Basha method is not suitable for vertical stereo image scaling. In view of the above limitations of Basha method, a geometric consistent stereo seam engraving stereo seam carving algorithm suitable for vertical scaling is proposed. Firstly, two strategies based on parallax, real projection and virtual projection, are introduced to solve the phenomenon of multi-pixel and spacer gap in Basha method, and a new definition of horizontal strike stereoscopic joint is proposed. Based on this definition, an improved geometric consistent stereo seam carving algorithm is proposed, which not only maintains the horizontal scaling function of the original Basha algorithm, but also achieves the vertical stereo image scaling. The author provides some experimental data to show that the algorithm is effective.
【作者单位】：广东外语外贸大学信息学院;中山大学软件学院;数字家庭国家工程研究中心(中山大学);
【基金】：国家自然科学基金项目(61370160,61402120,61320106008) 广东省自然科学(2015A030313578,2015A030313129,2014A030310348) 广东省科技计划项目(2015B010106005) 广州市科技计划项目(2014J4100032)资助广东省高等学校科技创新项目(2012KJCX0048)~~
【分类号】：TP391.41

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