Staff Publications

Staff Publications

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    'Staff publications' is the digital repository of Wageningen University & Research

    'Staff publications' contains references to publications authored by Wageningen University staff from 1976 onward.

    Publications authored by the staff of the Research Institutes are available from 1995 onwards.

    Full text documents are added when available. The database is updated daily and currently holds about 240,000 items, of which 72,000 in open access.

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Record number 408515
Title Combining stereo and time-of-flight images with application to automatic plant phenotyping
Author(s) Song, Y.; Glasbey, C.A.; Heijden, G.W.A.M. van der; Polder, G.; Dieleman, J.A.
Source In: 17th Scandinavian Conference on Image Analysis, SCIA 2011, Ystad, Sweden, 23 - 27 May, 2011. - - p. 467 - 478.
Event 17th Scandinavian Conference on Image Analysis, SCIA 2011, Ystad, Sweden, 2011-05-23/2011-05-27
Department(s) Biometris (PPO/PRI)
WUR GTB Gewasfysiologie Management en Model
Publication type Contribution in proceedings
Publication year 2011
Abstract This paper shows how stereo and Time-of-Flight (ToF) images can be combined to estimate dense depth maps in order to automate plant phenotyping. We focus on some challenging plant images captured in a glasshouse environment, and show that even the state-of-the-art stereo methods produce unsatisfactory results. By developing a geometric approach which transforms depth information in a ToF image to a localised search range for dense stereo, a global optimisation strategy is adopted for producing smooth and discontinuity-preserving results. Since pixel-by-pixel depth data are unavailable for our images and many other applications, a quantitative method accounting for the surface smoothness and the edge sharpness to evaluate estimation results is proposed. We compare our method with and without ToF against other state-of-the-art stereo methods, and demonstrate that combining stereo and ToF images gives superior results.
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