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000276442 1001_ $$0P:(DE-HGF)0$$aMinervini, Massimo$$b0$$eCorresponding author
000276442 245__ $$aThe significance of image compression in plant phenotyping applications
000276442 260__ $$aCollingwood, Victoria$$bCSIRO Publ.$$c2015
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000276442 520__ $$aWe currently witness an increasingly higher throughput in image-based plant phenotyping experiments. The majority of imaging data are collected based on complex automated procedures, and are then post-processed to extract phenotyping related information. In this article we show that image compression used in such procedures may compromise phenotyping results and needs to be taken into account. We motivate the paper with three illuminating proof of concept experiments which demonstrate that compression (especially in its most common lossy form of JPEG) does affect measurements of plant traits and errors introduced can be high. We further systematically explore how compression affects measurement fidelity, quantified as effects on image quality as well as errors in extracted plant visual traits. To do so we evaluate a variety of image-based phenotyping scenarios, including size and color of shoots, leaf and root growth, as well as root system analysis. Overall, we find that compression has a considerable effect on several types of analyses and that proper care is necessary to ensure that such choice does not affect biological findings. In order to avoid or at least minimize introduced measurement errors, for each scenario we derive recommendations and provide guidelines on how to identify suitable compression options in practice. We also find that certain compression choices can offer beneficial returns, in terms of reducing the amount of data storage without compromising phenotyping results. This may enable even higher throughput experiments in the future.
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000276442 7001_ $$0P:(DE-Juel1)129394$$aScharr, Hanno$$b1
000276442 7001_ $$0P:(DE-HGF)0$$aTsaftaris, Sotirios A.$$b2
000276442 773__ $$0PERI:(DE-600)1496158-1$$a10.1071/FP15033$$gVol. 42, no. 10, p. 971 -$$n10$$p971 - 988$$tFunctional plant biology$$v42$$x1445-4408$$y2015
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