Images are used frequently in plant phenotyping to capture measurements. This chapter offers a repeatable method for capturing two-dimensional measurements of plant parts in field or laboratory settings using a variety of camera styles (cellular phone, DSLR), with the addition of a printed calibration pattern. The method is based on calibrating the camera using information available from the EXIF tags from the image, as well as visual information from the pattern. Code is provided to implement the method, as well as a dataset for testing. We include steps to verify protocol correctness by imaging an artifact. The use of this protocol for two-dimensional plant phenotypoing will allow data capture from different cameras and environments, with comparison on the same physical scale.
- Code repository: camera-as-scannerhtml
Code for calibrating a camera using a pattern, EXIF tags, and then warping...
- Code repository: aruco-pattern-writehtml
Basic code for generating a gird of aruco patterns.
- Code repository: camera-as-scanner-datahtml
A minimal working example to verify that the installation of camera-as-...
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Ag Data Commons
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005:040 - Department of Agriculture - National Research
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005:18 - Agricultural Research Service