3D geometry from planar parallax
3D geometry from planar parallax
复制标题
平面视差的 3D 几何
DOI：
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发表时间：
1994
期刊：
影响因子：
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通讯作者：
H. Sawhney
中科院分区：
文献类型：
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作者：
H. Sawhney
在固定的以物体为中心的坐标系中导出3D结构是从多个视图中获取形状的越来越流行的趋势。对于线性近似透视投影（弱/帕拉透视），并为图像速度的情况下，优雅的线性方法已被设计用于鲁棒估计。对于任意视图变换下的重建，已经提出了使用点对应的线性投影方法。在本文中，我们制定的问题，内在的三维结构估计，通过透视投影使用运动视差，相对于一个任意的平面在环境中定义。它示出，如果使用平面投影变换相对于一个参考视图的图像坐标系被扭曲，残留的图像运动仅依赖于核线，并具有简单的关系的3D结构。我们的计算方案避免了点/线对应，是基于分层估计和图像变形工作直接与时空图像强度。<<ETX>>
Deriving 3D structure in a fixed object-centered coordinate system is an increasingly popular trend in shape from multiple views. For linear approximations to perspective projection (weak/para perspective), and for the case of image velocities, elegant linear methods have been devised for robust estimation. For reconstruction under arbitrary view transformations, linear projective methods using point correspondences have been suggested. In this paper, we formulate the problem of intrinsic 3D structure estimation through perspective projection using motion parallax, defined with respect to an arbitrary plane in the environment. It is shown that if an image coordinate system is warped using plane projective transformation with respect to a reference view, the residual image motion is dependent only on the epipoles and has a simple relation to the 3D structure. Our computational scheme avoids point/line correspondence and is based on hierarchical estimation and image warping working directly with spatio-temporal image intensities.<<ETX>>