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Related Concept Videos

Light Acquisition02:16

Light Acquisition

In order to produce glucose, plants need to capture sufficient light energy. Many modern plants have evolved leaves specialized for light acquisition. Leaves can be only millimeters in width or tens of meters wide, depending on the environment. Due to competition for sunlight, evolution has driven the evolution of increasingly larger leaves and taller plants, to avoid shading by their neighbors with contaminant elaboration of root architecture and mechanisms to transport water and nutrients.
IR Spectrum Peak Splitting: Symmetric vs Asymmetric Vibrations01:08

IR Spectrum Peak Splitting: Symmetric vs Asymmetric Vibrations

Identical bonds within a polyatomic group can stretch symmetrically (in-phase) or asymmetrically (out-of-phase). Similar to hydrogen bonding, these vibrations also influence the shape of the IR peak. Generally, asymmetric stretching frequencies are higher than symmetric stretching frequencies. For example, primary amines exhibit two distinct IR peaks between 3300–3500 cm−1 corresponding to the symmetric and asymmetric N-H stretching, while secondary amines exhibit a single stretching vibration...
¹³C NMR: ¹H–¹³C Decoupling01:04

¹³C NMR: ¹H–¹³C Decoupling

The probability of having two carbon-13 atoms next to each other is negligible because of the low natural abundance of carbon-13. Consequently, peak splitting due to carbon-carbon spin-spin coupling is not observed in spectra. However, protons up to three sigma bonds away split the carbon signal according to the n+1 rule, resulting in complicated spectra.
A broadband decoupling technique is used to simplify these complex, sometimes overlapping, signals. Broadband decoupling relies on a...

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Related Experiment Video

Updated: Jun 13, 2026

Imaging and Analysis for Quantifying Maize (Zea mays) Abiotic Stress Phenotypes
06:41

Imaging and Analysis for Quantifying Maize (Zea mays) Abiotic Stress Phenotypes

Published on: March 28, 2025

Curvelet Decomposition-Based Tri-Branch Coupling Network for Hyperspectral Unsound Maize Seeds Identification.

Kuibin Zhao1,2, Lei Lu1,2,3, Pengtao Lv1,3

  • 1College of Information Science and Engineering, Henan University of Technology, Zhengzhou 450001, China.

Foods (Basel, Switzerland)
|June 12, 2026
PubMed
Summary

This study introduces CD-TriMamba, a new framework for classifying maize kernels using hyperspectral and visible-light images. The model achieves high accuracy, improving seed screening and quality evaluation.

Keywords:
Mamba featurecurvelet transforminformation fusionmaize identificationunsound seeds

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Micron-scale Phenotyping Techniques of Maize Vascular Bundles Based on X-ray Microcomputed Tomography

Published on: October 9, 2018

Area of Science:

  • Agricultural Science
  • Computer Vision
  • Data Science

Background:

  • Accurate and non-destructive classification of maize kernels is crucial for seed screening and quality control.
  • Current hyperspectral imaging methods using Mamba architectures have limitations in time-frequency analysis and multimodal fusion.
  • Traditional methods often require extensive spectral preprocessing, potentially introducing errors and reducing model robustness.

Purpose of the Study:

  • To develop a novel cross-modal classification framework for maize kernel analysis.
  • To enhance feature extraction and deep fusion by integrating hyperspectral data and visible-light images.
  • To overcome limitations in existing methods regarding feature fusion and spectral preprocessing.

Main Methods:

  • Proposed a cross-modal classification framework named CD-TriMamba.
  • Designed an innovative feature extraction module with Spectral Curvelet Convolution (SCC) for hyperspectral data and Curvelet-Decomposed Convolution (CDC) for spatial modeling.
  • Implemented a feature rearrangement mechanism and a ConvNeXt-guided tri-branch cross-fusion structure (TriMamba) for deep feature integration.

Main Results:

  • The CD-TriMamba model achieved outstanding performance in maize kernel seed classification.
  • Attained an accuracy (Acc) of 99.2% and a Kappa value of 99.1%.
  • Demonstrated the effectiveness of cross-modal feature fusion for enhanced classification.

Conclusions:

  • The proposed CD-TriMamba framework effectively integrates hyperspectral and visible-light data for maize kernel classification.
  • Cross-modal feature fusion significantly improves classification accuracy and robustness.
  • The model shows strong potential for practical applications in seed screening and quality evaluation.