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A High Spatial Resolution Depth Sensing Method Based on Binocular Structured Light
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DOI：10.3390/s17040805.png)
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摘要
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Depth information has been used in many fields because of its low cost and easy availability, since the Microsoft Kinect was released. However, the Kinect and Kinect-like RGB-D sensors show limited performance in certain applications and place high demands on accuracy and robustness of depth information. In this paper, we propose a depth sensing system that contains a laser projector similar to that used in the Kinect, and two infrared cameras located on both sides of the laser projector, to obtain higher spatial resolution depth information. We apply the block-matching algorithm to estimate the disparity. To improve the spatial resolution, we reduce the size of matching blocks, but smaller matching blocks generate lower matching precision. To address this problem, we combine two matching modes (binocular mode and monocular mode) in the disparity estimation process. Experimental results show that our method can obtain higher spatial resolution depth without loss of the quality of the range image, compared with the Kinect. Furthermore, our algorithm is implemented on a low-cost hardware platform, and the system can support the resolution of 1280 x 960, and up to a speed of 60 frames per second, for depth image sequences.
Keyword:
depth sensing
binocular structured light
spatial resolution
Kinect
speckle pattern
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3.5
论文数:
7.2W
被引数:
20.9W
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