Results 1 to 10 of about 23,307 (292)

Phenology-pigment based automated peanut mapping using sentinel-2 images

GIScience & Remote Sensing, 2021
Reliable spatiotemporal crop data are vital for sustainable agricultural management. However, efficient algorithms that can be automatically applied to large regions are scarce, especially for cash crops, since it is hard to distinguish their uniqueness ...
Bingwen Qiu, Fanchen Jiang, Chongcheng Chen, Zhenghong Tang, Wenbin Wu, Joe Berry   +5 more
doaj   +4 more sources

Artificial Intelligence for Pigment Classification Task in the Short-Wave Infrared Range

Sensors, 2021
Hyperspectral reflectance imaging in the short-wave infrared range (SWIR, “extended NIR”, ca. 1000 to 2500 nm) has proven to provide enhanced characterization of paint materials.
Emeline Pouyet, Tsveta Miteva, Neda Rohani, Laurence de Viguerie   +3 more
doaj   +4 more sources

A hyperspectral imaging spectral unmixing and classification approach to pigment mapping in the Gough & Selden Maps

Journal of the American Institute for Conservation, 2019
In this research, a spectral unmixing and classification approach for hyperspectral imagery (HSI) of historical artifacts is introduced.
Di Bai, David W Messinger, David Howell   +2 more
exaly   +4 more sources

Mapping the pigment distribution of Vermeer’s Girl with a Pearl Earring [PDF]

Heritage Science, 2020
As part of the 2018 Girl in the Spotlight project, reflectance and molecular fluorescence imaging spectroscopy (RIS, FIS), and macroscale X-ray fluorescence scanning (MA-XRF) were performed on Johannes Vermeer’s Girl with a Pearl Earring (c.
John K. Delaney, Kathryn A. Dooley, Annelies van Loon, Abbie Vandivere   +3 more
doaj   +2 more sources

Hyperspectral prediction of pigment content in tomato leaves based on logistic-optimized sparrow search algorithm and back propagation neural network

Journal of Agricultural Engineering, 2023
Leaf pigment content can reflect the nutrient elements content of the cultivation medium indirectly. To rapidly and accurately predict the pigment content of tomato leaves, chlorophyll a, chlorophyll b, chlorophyll and carotenoid were extracted from ...
Jiangui Zhao, Tingyu Zhu, Zhichao Qiu, Tao Li, Guoliang Wang, Zhiwei Li, Huiling Du   +6 more
doaj   +3 more sources

Advances in Automated Pigment Mapping for 15th-Century Manuscript Illuminations Using 1-D Convolutional Neural Networks and Hyperspectral Reflectance Image Cubes

Applied Sciences
Reflectance imaging spectroscopy (RIS) is invaluable in mapping and identifying artists’ materials in paintings. The analysis of the RIS image cube first involves classifying the cube into spatial regions, each having a unique reflectance spectrum ...
Roxanne Radpour, Tania Kleynhans, Michelle Facini, Federica Pozzi, Matthew Westerby, John K. Delaney   +5 more
doaj   +3 more sources

Cell-cell communication as underlying principle governing color pattern formation in teleost fishes [PDF]

Nature Communications
The diverse pigmentation patterns of animals are crucial for predation avoidance and behavioral display. This diversity arises from interactions among distinct pigment cell types, yet mechanisms generating pattern variation across teleost fishes remain ...
Marleen Klann, Saori Miura, Shu-Hua Lee, Stefano Davide Vianello, Robert Ross, Masakatsu Watanabe, Emma Gairin, Yipeng Liang, Harrison W. Hutto, Braedan M. McCluskey, Marcela Herrera, Lila Solnica-Krezel, Laurence Besseau, Simone Pigolotti, David M. Parichy, Masato Kinoshita, Vincent Laudet   +16 more
doaj   +2 more sources

Comparison of Imaging Models for Spectral Unmixing in Oil Painting

Sensors, 2021
The radiation captured in spectral imaging depends on both the complex light–matter interaction and the integration of the radiant light by the imaging system.
Federico Grillini, Jean-Baptiste Thomas, Sony George   +2 more
doaj   +1 more source

Investigation of Egyptian Blue on a Fragmentary Egyptian Head Using ER-FTIR Spectroscopy and VIL Imaging

Heritage, 2023
Non-invasive techniques are being increasingly used for the study of heritage objects. This article describes the results of pigment analysis on a fragmentary Egyptian sculpture using two non-invasive infrared methods: external reflectance Fourier ...
Germain Wiseman, Stephanie Barnes, Kate Helwig   +2 more
doaj   +1 more source

Genetic Mapping of Flavonoid Grain Pigments in Durum Wheat

Plants, 2023
Pigmented cereal grains with high levels of flavonoid compounds have attracted the attention of nutritional science backing the development of functional foods with claimed health benefits. In this study, we report results on the genetic factors controlling grain pigmentation in durum wheat using a segregant population of recombinant inbred lines (RILs)
Natalia Sgaramella, Domenica Nigro, Antonella Pasqualone, Massimo Antonio Signorile, Barbara Laddomada, Gabriella Sonnante, Emanuela Blanco, Rosanna Simeone, Antonio Blanco   +8 more
openaire   +4 more sources