Depth from Projector's Defocus Based on Multiple Focus Pattern Projection
Depth from Projector's Defocus Based on Multiple Focus Pattern Projection
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基于多焦点图案投影的投影机离焦深度
DOI：
10.2197/ipsjtcva.6.88
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发表时间：
2014
期刊：
影响因子：
--
通讯作者：
Furukawa Ryo
中科院分区：
文献类型：
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作者：
H. Masuyama;Hiroshi Kawasaki;Furukawa Ryo
对于使用视频投影仪的3D主动测量方法，存在投影图案必须聚焦在目标物体上的隐含限制。这种限制对重建深度的可能范围设置了严格的限制。为了克服这一问题，本文提出了利用多幅不同焦深图案的散焦恢复深度（DfD）方法来扩展深度范围。利用该方法，不仅扩大了深度的范围，而且由于投影仪的大孔径，即使投影仪和目标之间存在障碍物，也可以恢复形状。此外，由于DfD的优点，其不需要相机和投影仪之间的基线，因此该方法不会发生遮挡。为了验证该方法的有效性，利用实际系统进行了多个实验，以估计多个目标的深度。
For 3D active measurement methods using video projector, there is the implicit limitation that the projected patterns must be in focus on the target object. Such limitation set a severe constraints on possible range of the depth for reconstruction. In order to overcome the problem, Depth from Defocus (DfD) method using multiple patterns with different in-focus depth is proposed to expand the depth range in the paper. With the method, not only the range of the depth is extended, but also the shape can be recovered even if there is an obstacle between the projector and the target, because of the large aperture of the projector. Furthermore, thanks to the advantage of DfD which does not require baseline between the cameras and the projector, occlusion does not occur with the method. In order to verify the effectiveness of the method, several experiments using the actual system was conducted to estimate the depth of several objects.