Claim · model-written summary
Length errors of WinRhizo increased with root length, overlap and root length density.
- Treatment
- increasing root length, overlap and root length densitye0
- Outcome
- length errorse0
- Direction
- increasede0
Not reportedTaxonMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleComparatorSettingValueQualifier
Verbatim
e0“The length errors increased with increasing root length, overlap and root length density for WinRhizo ™”
Title
Accuracy of image analysis tools for functional root traits: A comment on Delory et al. (2017)
Laura Rose; Guillaume Lobet Methods in Ecology and Evolution 2019. doi:10.1111/2041-210x.13156
Other claims from this paper (15)
- Method / resource WinRhizo and IJ_Rhizo gave comparable accuracy for diameter and length estimates at 1,200 and 800 dpi.
- Method / resource Diameter errors were balanced when estimated against ground-truth values.
- Method / resource Volume estimates had a systematic error caused by the assumption of constant diameter.
- Observation WinRhizo provides the opportunity to calculate correctly computed volumes from diameter classes.
- Observation At 1,200 dpi, IJ_Rhizo failed to find an appropriate threshold, which decreased accuracy.
- Association The magnitude of diameter errors increased with root overlap for IJ_Rhizo.
- Association The magnitude of WinRhizo volume underestimation decreased with volume.
- Association Volume underestimation was higher for taproot than for fibrous root systems.
- Association All errors increased with lower resolution.
- Method / resource The results confirm the earlier accuracy results of Delory et al. for length.
- Recommendation Estimates from different software packages or resolutions should not be compared directly.
- Recommendation Characteristics of root systems should be standardised for image analysis.
- Recommendation Methods should be validated for each analysed dataset.
- Recommendation New image analysis tools should be validated against a real ground-truth.
- Association The dependency of errors on the response variable of interest can increase the probability of errors.