Vertical retargeting for stereoscopic images using seam manipulation-based approaches has remained an open challenge over the years. Even though horizontal retargeting had attracted a huge amount of interest, its seam coupling strategies were not capable to construct valid seam pairs for vertical retargeting. In this article, we propose two seam coupling strategies for vertical retargeting, namely, real mapping and virtual mapping. Our proposed mapping strategies were implemented to address the problems of multiple assignments and missing assignments, which are able to occur in the straightforward generalization from horizontal retargeting to vertical retargeting. On the basis of our proposed method, stereo seams were allowed to lay across occluded regions and occluding regions in stereo images. We maintained the geometric consistency by removing occluded pixels and corresponding occluding pixels in both stereo images. As a result, our method guarantees valid and geometrically consistent stereo seam pairs to be found in the horizontal direction. We generate vertically retargeted stereo images by removing or adding horizontal seam pairs iteratively. We conducted experiments on a number of indoor and outdoor scenes. Experimental results demonstrated that our method overcomes the limitations of vertical retargeting and is effective in preserving the geometric consistency.

中文翻译：

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通过立体缝雕刻立体图像的垂直重定位

多年来，使用基于接缝操作的方法对立体图像进行垂直重定向一直是一个开放的挑战。尽管水平重定向引起了极大的兴趣，但其接缝耦合策略无法为垂直重定向构建有效的接缝对。在本文中，我们提出了两种用于垂直重定向的接缝耦合策略，即真实映射和虚拟映射。我们提出的映射策略被实施以解决多个分配和丢失分配的问题，这些问题能够在从水平重定向到垂直重定向的直接概括中发生。在我们提出的方法的基础上，允许立体接缝跨越立体图像中的遮挡区域和遮挡区域。我们通过去除两个立体图像中的遮挡像素和相应的遮挡像素来保持几何一致性。因此，我们的方法保证在水平方向上找到有效且几何一致的立体接缝对。我们通过迭代地删除或添加水平接缝对来生成垂直重定向的立体图像。我们对多个室内和室外场景进行了实验。实验结果表明，我们的方法克服了垂直重定向的局限性，并有效地保持了几何一致性。我们通过迭代地删除或添加水平接缝对来生成垂直重定向的立体图像。我们对多个室内和室外场景进行了实验。实验结果表明，我们的方法克服了垂直重定向的局限性，并有效地保持了几何一致性。我们通过迭代地删除或添加水平接缝对来生成垂直重定向的立体图像。我们对多个室内和室外场景进行了实验。实验结果表明，我们的方法克服了垂直重定向的局限性，并有效地保持了几何一致性。