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  • From Arrays to Graph: Different Ways to Represent Image Data in Remote Sensing

    A practical overview of image data structures and how they support different analytical methods.

    13 min read   ·   July 12, 2025

      ·   remote_sensing,   machine_learning,   image_analysis

  • Revisiting NDFI: A Flexible Index for Forest Monitoring and Beyond

    A practical dive into the Normalized Difference Fraction Index (NDFI), its origins in forest degradation monitoring, a deeper understanding on its foundation, and how we can adapt it for different goals like above-ground biomass estimation.

    15 min read   ·   June 28, 2025

      ·   remote_sensing,   spectral_unmixing,   biomass,   forest,   environment,   multispectral

  • Mapping Lithium Bearing Mineral in Granite Core Sample with Hyperspectral Imaging

    Using Minimum Wavelength Mapper and Decision Tree Classifier to analyze hyperspectral image of lithium bearing granite core sample.

    7 min read   ·   May 03, 2025

      ·   spectral_geology,   mineral,   data_science,   geology,   hyperspectral,   core_scanning

  • Multi Sensor Object Based Image Classification for Land Use/Land Cover Analysis

    Combinining Landsat-8, Sentinel-1, VIIRS NTL, and SRTM for object based image classification using SNIC and Random Forest

    7 min read   ·   April 08, 2025

      ·   remote_sensing,   monitoring,   environment,   forest,   data_science,   machine_learning,   radar,   multispectral

  • Spatio-Temporal Analysis of Industrial and Artisinal Offshore Tin Mining Vessel

    Object-based image classification of mining vessels using Sentinel-1 timeseries.

    9 min read   ·   April 04, 2025

      ·   remote_sensing,   monitoring,   mining,   security,   data_science,   machine_learning,   radar,   GIS

  • Sentinel 1 Change Detection for Forest Monitoring

    Using Sentinel-1 data to detect monthly disturbance of forest canopy

    6 min read   ·   March 30, 2025

      ·   remote_sensing,   monitoring,   data_science,   radar,   environment,   forest

  • Sentinel-2 Bare Earth Mosaics

    First trial to build Sentinel-2 bare earth mosaics for Indonesia in Earth Engine

    5 min read   ·   February 19, 2025

      ·   remote_sensing,   soil,   geology,   data_science,   multispectral

  • Illegal Mining From Space

    Using satellite imagery to monitor illegal mining

    15 min read   ·   February 09, 2025

      ·   remote_sensing,   monitoring,   mining,   security,   data_science,   machine_learning,   deep_learning,   multispectral,   radar,   GIS,   environment

  • Exploratory Data Analysis (EDA) for Hyperspectral Imagery

    My typical approach on EDA for a new hyperspectral projects for geological investigations. Includes method such as PCA, K-Means, N-FINDR, Linear Spectral Unmixing, and Minimum Wavelength Mapping.

    19 min read   ·   December 09, 2024

      ·   spectral_geology,   mineral,   data_science,   geology,   hyperspectral,   remote_sensing

  • Endmember Extraction from Hyperspectral Imagery Using N-FINDR

    A brief overview, ilustration and case example of N-FINDR algorithm to extract mineral endmembers in hyperspectral imagery.

    9 min read   ·   November 27, 2024

      ·   spectral_geology,   mineral,   data_science,   geology,   hyperspectral,   core_scanning

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