Ratul DebnathGeospatial · Planning
Remote sensing / Academic research

Reading vegetation through multispectral imagery

Connecting UAV imagery, field observations, and a convolutional neural network to estimate switchgrass nitrogen content.

Year
2025
Project type
Graduate course project
My role
CNN modeling & spatial preprocessing

Spring 2025 · GEOG 5075: Geospatial Machine Learning · SHSU

Sam Houston State University
UAV imageryPython / TensorFlowArcGIS Pro
Nitrogen prediction results from the UAV multispectral modeling project
From the original project

Model results from the original course report using a published UAV multispectral dataset.

The question

Can multispectral reflectance support spatial prediction of nitrogen content in switchgrass?

The approach
  1. Worked with MicaSense RedEdge UAV imagery and red-edge and near-infrared predictors.
  2. Used ArcGIS Pro for sampling and quality checks, connecting imagery-derived inputs with field observations.
  3. Built a Python / TensorFlow convolutional neural network and evaluated predicted versus observed values.
The outcome

The reported evaluation achieved R² of 0.8388 and RMSE of 0.0071. The work connected image processing, model evaluation, and spatial prediction.

Original project document

Predicting Nitrogen Content in Switchgrass Using CNN Deep Learning and Multispectral Remote Sensing

Final report · PDF · 10 pages · 583 KB

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