Daan Boesten
Current Organizations / Institutes
The organizations/institutes from the scholar's latest article
Research Subjects
Daan Boesten has a total of 3 co-authors. Here are the top co-authors by number of shared publications:
- Naomi van der Kolk
Max Planck Inst. für Physik, Föhringer Ring 6, D-80805 Munich, Germany
1 shared publication - Steven van Den Berg
Photonics Research Group, The Hague University of Applied Sciences, Rotterdamseweg 137, 2628 AL Delft, The Netherlands
1 shared publication - Willem van Valenberg
Photonics Research Group, The Hague University of Applied Sciences, Rotterdamseweg 137, 2628 AL Delft, The Netherlands
1 shared publication
Latest Publications
- Open Access
Optical Caliper for Contactless Measurement of Plant Stem Diameter
Precision greenhouse agriculture enhances plant health and crop yields by continuously monitoring key plant parameters. Stem diameter is such a parameter and is monitored to support decisions on plant care. However, traditional contact-based methods induce thigmomorphogenic effects that impact plant growth. Here, we introduce the Optical Caliper (OC), a novel contactless device for precise, non-invasive stem diameter measurement. The OC operates by projecting a collimated light beam to cast a shadow of the stem onto a high-resolution image sensor. The shadow size is a measure for the stem diameter. Controlled laboratory tests show the OC offers an accuracy comparable to that of a Digital Caliper (DC). Field trials on irregular tomato and cucumber stems demonstrate a repeatability of 0.1–0.2 mm. The OC’s non-invasive design and high repeatability exceed the performance of a DC, making it particularly suited for accurately monitoring soft, variable plant structures. Bringing the advantage of avoiding thigmomophogenic effects and thus optimizing crop yield, the OC is a promising tool for high-throughput plant phenotyping and precision agriculture applications.
Open AccessOptical Caliper for Contactless Measurement of Plant Stem Diameter
Precision greenhouse agriculture enhances plant health and crop yields by continuously monitoring key plant parameters. Stem diameter is such a parameter and is monitored to support decisions on plant care. However, traditional contact-based methods induce thigmomorphogenic effects that impact plant growth. Here, we introduce the Optical Caliper (OC), a novel contactless device for precise, non-invasive stem diameter measurement. The OC operates by projecting a collimated light beam to cast a shadow of the stem onto a high-resolution image sensor. The shadow size is a measure for the stem diameter. Controlled laboratory tests show the OC offers an accuracy comparable to that of a Digital Caliper (DC). Field trials on irregular tomato and cucumber stems demonstrate a repeatability of 0.1–0.2 mm. The OC’s non-invasive design and high repeatability exceed the performance of a DC, making it particularly suited for accurately monitoring soft, variable plant structures. Bringing the advantage of avoiding thigmomophogenic effects and thus optimizing crop yield, the OC is a promising tool for high-throughput plant phenotyping and precision agriculture applications.