Method Development III

How well does this work?

The following images demonstrate how effective the method is. Note that these images were analyzed as part of batches of images, and that the threshold values used for a batch of images may not be optimal for each single image. We expect to see some mis-classification, but hope not to see too much.

Early-season rye cover crop (March 26, 2008) with corn residue.

Four binary mask from the above image, showing: (A) Leaves, (B) Residue, (C) Bare Soil, and (D) Borderline (pixels with color values within 2% of a threshold).

The false-color image produced from the above allows easy evaluation of accuracy of classification. Green pixels are green, residue is blue-purple, soil is red-black.

Ambiguous (unclassified) pixels are in the orange-yellow color. Note the residue in the lower left corner that has been misclassified as green - comparison with the original image shows that this item has a purplish color to it - it was classified as purple, and so got combined with the green. Altering thresholds to avoid this misclassification would likely lead to classification of purple rye leaves as residue.

An early-season hairy vetch cover crop (March 26, 2008) with residue of a winter-killed nurse crop of oats.

The corresponding evaluation image

Spotlight

Study shows ‘steep, cheap and deep’ roots help corn plants deal with drought Jagdeep Sidhu and Sam Walker win awards at 2022 CSA (Crop Science, Soil Science, Agronomy Societies) meetings Jonathan Lynch recognized as highly cited researcher in 2022 by Clarivate Jonathan Lynch recognized as highly cited researcher in 2021 by Clarivate Publication receives award from Crop Science Society of America Tools for breeding cowpea with better roots highlighted in CSA news article Breeding Beans for Better Roots Professor Kathleen Brown retires after 41 years Amelia Henry receives humanitarian award Jagdeep Sidhu receives research award Roots lab research focus of podcast from West German Public Radio Newly discovered trait helps plants grow deeper roots in dry, compacted soils | Penn State University CSA news article on Roots Lab work with bean breeding Jagdeep Sidhu Receives College Research Funding Jonathan Lynch recognized as Highly Cited Researcher by Clarivate Graduate student receives special award for early career contributions to ASPB LAT root image wins photo competition of Egyptian Academy of Scientific Research Graduate student awarded Outstanding Agricultural Graduate Student Award from AASIO News story on bean root architecture reaches 6 million people, worth $240,000 Bean root architecture results highlighted in CSSA News Field work proceeds with physical distancing, safety precautions