Training-Free Whitened Local-Global Fusion for Few-Shot Plant Disease Recognition
2026 International Conference on Digital Image Computing: Techniques and Applications (DICTA 2026), Australia
Supervised by Md. Ismail Hossen, Griffith University, Australia (Google Scholar, LinkedIn)
A fully training-free framework on a frozen ResNet-18 that combines ZCA-whitened local descriptors with a global Mahalanobis metric to bridge the laboratory-to-field domain gap on the PlantVillage benchmark.
Key Contributions & Highlights:
- Eliminates gradient-based retraining, enabling immediate few-shot diagnosis on edge agricultural hardware.
- ZCA whitening decorrelates local visual descriptors to suppress irrelevant background foliage noise.
- Combines global Mahalanobis distance metric with local patch alignment to generalize across lab-to-field domain shifts on the PlantVillage dataset.
- Computer Vision
- Few-Shot Learning
- PlantVillage
- ResNet-18
- ZCA Whitening
- DICTA 2026