Results 21 to 30 of about 270 (136)

Hyperspectral analysis of the content of the alkali-hydrolysed nitrogen in the soil of a millet field

Plant, Soil and Environment, 2023
Hyperspectral imaging technology has emerged as a prominent research area for quantitatively estimating soil nutrient content owing to its non-destructive, rapid, and convenient features.
Tingyu Zhu, Zhiqiang Wang, Zilin Zhang, Xiuhan He, Gangao Li, Zongbao Huang, Lili Guo, Zhiwei Li, Huiling Du   +8 more
doaj   +1 more source

Ensembles of spectral-spatial convolutional neural network models for classifying soil types in hyperspectral images

Компьютерная оптика, 2023
The paper presents a study of various approaches to the classification of soil covers based on neural network algorithms using hyperspectral remote and proximal sensing of the Earth.
N.A. Firsov, V.V. Podlipnov, N.A. Ivliev, D.D. Ryskova, A.V. Pirogov, A.A. Muzyka, A.R. Makarov, V.E. Lobanov, V.I. Platonov, A.N. Babichev, V.A. Monastyrskiy, V.I. Olgarenko, D.P. Nikolaev, R.V. Skidanov, A.V. Nikonorov, N.L. Kazanskiy, V.A. Soyfer   +16 more
doaj   +1 more source

Hyperspectral Analysis of Pine Wilt Disease to Determine an Optimal Detection Index [PDF]

, 2018
Bursaphelenchus xylophilus, the pine wood nematode (PWN) which causes pine wilt disease, is currently a serious problem in East Asia, including in Japan, Korea, and China.
Kafatos, M., Kim, M., Kim, S.-R., Lee, S.-H., Lee, S.-S., Lee, W.-K., Lim, C.-H.   +6 more
core   +5 more sources

Comparison of the Non-Invasive Monitoring of Fresh-Cut Lettuce Condition with Imaging Reflectance Hyperspectrometer and Imaging PAM-Fluorimeter

Photonics, 2021
We compared two approaches to non-invasive proximal sensing of the early changes in fresh-cut lettuce leaf quality: hyperspectral imaging and imaging of variable chlorophyll fluorescence contained in the leaves.
Boris Shurygin, Olga Chivkunova, Olga Solovchenko, Alexei Solovchenko, Alexey Dorokhov, Igor Smirnov, Maxim E. Astashev, Dmitriy Khort   +7 more
doaj   +1 more source

Imaging hyperspectrometer-consol

Procedia Engineering, 2017
Produced imaging hyperspectrometer is used as a consol. Due to minimized design, the spectrometer consists only of a diffraction grating and diaphragm, so it becomes a very inexpensive device. A diffraction grating with a period of 6 µm was made using the technology of direct laser beam recording on chromium.
V.A. Blank, R.V. Skidanov
openaire   +1 more source

Establishment of a Monitoring Model for the Cotton Leaf Area Index Based on the Canopy Reflectance Spectrum

Land, 2022
Cotton is the main economic crop in China and is important owing to its use as an industrial raw material and a cash crop. This experiment was conducted in the main cotton-producing area of Xinjiang, China.
Xianglong Fan, Xin Lv, Pan Gao, Lifu Zhang, Ze Zhang, Qiang Zhang, Yiru Ma, Xiang Yi, Caixia Yin, Lulu Ma   +9 more
doaj   +1 more source

Hyperspectral Non-Imaging Measurements and Perceptron Neural Network for Pre-Harvesting Assessment of Damage Degree Caused by Septoria/Stagonospora Blotch Diseases of Wheat

Agronomy, 2023
The detection and identification of plant diseases is a fundamental task for sustainable crop production. Septoria tritici and Stagonospora nodorum blotch (STB and SNB) are two of the most common diseases of cereal crops that cause significant economic ...
Sofia V. Zhelezova, Elena V. Pakholkova, Vladislav E. Veller, Mikhail A. Voronov, Eugenia V. Stepanova, Alena D. Zhelezova, Anton V. Sonyushkin, Timur S. Zhuk, Alexey P. Glinushkin   +8 more
doaj   +1 more source

Retrieval of NO2 Column Amounts from Ground-Based Hyperspectral Imaging Sensor Measurements [PDF]

, 2019
Total column amounts of NO2 (TCN) were estimated from ground-based hyperspectral imaging sensor (HIS) measurements in a polluted urban area (Seoul, Korea) by applying the radiance ratio fitting method with five wavelength pairs from 400 to 460 nm.
Anderson, Dai-Gon Kim, Hana Lee, Heesung Chong, Hyeon-Ju Park, Hyunjae Kim, Jhoon Kim, Jin-Soo Park, Joon-Young Ahn, Sang Seo Park, Sang-Woo Kim, Seinfeld   +11 more
core   +1 more source

Calibration of an imaging hyperspectrometer

Computer Optics, 2017
We describe a precise calibration procedure for an Offner imaging hyperspectrometer. We analyze the influence of the calibration on the accuracy of the spectral distribution registration. We conduct a comparative analysis of the experimental data with the results of the precise measurements of spectral distributions made using a high-precision ...
V. Podlipnov, R. Skidanov
openaire   +1 more source

A compact imaging hyperspectrometer

Journal of Physics: Conference Series, 2019
Abstract The paper describes the design of a compact hyperspectrometer equipped with a transmission phase diffraction grating, which is used as a dispersing element. The calculation of the microrelief parameters of the dispersing element is given. The spectral characteristics of the developed device are investigated.
N A Ivliev, V V Podlipnov, R V Skidanov
openaire   +1 more source