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Sensors 2012, 12(2), 1437-1454; doi:10.3390/s120201437

Accuracy and Resolution of Kinect Depth Data for Indoor Mapping Applications

Faculty of Geo-Information Science and Earth Observation, University of Twente, P.O. Box 217, Enschede 7514 AE, The Netherlands
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Received: 14 December 2011 / Revised: 6 January 2012 / Accepted: 31 January 2012 / Published: 1 February 2012
(This article belongs to the Section Physical Sensors)
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Abstract

Consumer-grade range cameras such as the Kinect sensor have the potential to be used in mapping applications where accuracy requirements are less strict. To realize this potential insight into the geometric quality of the data acquired by the sensor is essential. In this paper we discuss the calibration of the Kinect sensor, and provide an analysis of the accuracy and resolution of its depth data. Based on a mathematical model of depth measurement from disparity a theoretical error analysis is presented, which provides an insight into the factors influencing the accuracy of the data. Experimental results show that the random error of depth measurement increases with increasing distance to the sensor, and ranges from a few millimeters up to about 4 cm at the maximum range of the sensor. The quality of the data is also found to be influenced by the low resolution of the depth measurements. View Full-Text
Keywords: range camera; calibration; sensor; RGB-D; point cloud; triangulation; imaging; error budget; laser scanning range camera; calibration; sensor; RGB-D; point cloud; triangulation; imaging; error budget; laser scanning
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This is an open access article distributed under the Creative Commons Attribution License (CC BY 3.0).

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Khoshelham, K.; Elberink, S.O. Accuracy and Resolution of Kinect Depth Data for Indoor Mapping Applications. Sensors 2012, 12, 1437-1454.

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