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LeafScope: A Portable High-Resolution Multispectral Imager for In Vivo Imaging Soybean Leaf
Liangju Wang1, Yunhong Duan1, Libo Zhang1
1Department of Agricultural and Biological Engineering, Purdue University, 225 S. University St., West Lafayette, IN 47907, USA.
Sensors (Basel, Switzerland)
|April 17, 2020
Summary
LeafScope, a portable multispectral imager, captures whole-leaf images for plant phenotyping. This low-cost device accurately assesses plant health and genotype differences, overcoming limitations of current dot-meter technologies.
Area of Science:
- Agricultural Science
- Plant Biology
- Imaging Technology
Background:
- Current plant phenotyping tools like SPAD meters and spectrometers offer limited leaf surface representation.
- Measuring small leaf regions fails to capture overall plant physiological status.
Purpose of the Study:
- To develop a portable, high-resolution multispectral imager (LeafScope) for in-vivo whole-leaf imaging in dicotyledon plants.
- To overcome the limitations of existing dot-meter devices in plant phenotyping.
Main Methods:
- Developed a portable imaging device (LeafScope) with a monochrome camera, imaging chamber, and multi-band LED array.
- Acquired multispectral images of whole dicotyledon leaves by flattening them within a light-blocking chamber.
- Utilized image processing to analyze color and morphological features from multispectral data.
Main Results:
- LeafScope successfully imaged whole dicotyledon leaves, blocking ambient light.
- Image analysis revealed significant effects of nitrogen and water treatments on soybean plants.
- Genotype differences were discernible through color and morphological features captured by LeafScope.
Conclusions:
- LeafScope is a low-cost, user-friendly device providing high-quality imaging for dicotyledon plants.
- The developed imager shows significant potential for advancing plant phenotyping applications.
- Accurate assessment of plant physiological status and genetic variation is achievable with LeafScope.
