Deep Learning for the plant disease detection

This is the source code of the experiment described in chapter Deep Learning for Plant Diseases: Detection and Saliency Map Visualisation in a book Human and Machine Learning, 2018.

Training and evaluating state-of-the-art deep architectures for plant disease classification task using pyTorch.
Models are trained on the preprocessed dataset which can be downloaded here.
Dataset is consisted of 38 disease classes from PlantVillage dataset and 1 background class from Stanford's open dataset of background images - DAGS.
80% of the dataset is used for training and 20% for validation.

Usage:

1. Train all the models with train.py and store the evaluation stats in stats.csv: python3 train.py
2. Plot the models' results for every archetecture based on the stored stats with plot.py: python3 plot.py

Results:

The models on the graph were retrained on final fully connected layers only - shallow, for the entire set of parameters - deep or from its initialized state - from scratch.

Model	Training type	Training time [~h]	Accuracy Top 1
AlexNet	shallow	0.87	0.9415
AlexNet	from scratch	1.05	0.9578
AlexNet	deep	1.05	0.9924
DenseNet169	shallow	1.57	0.9653
DenseNet169	from scratch	3.16	0.9886
DenseNet169	deep	3.16	0.9972
Inception_v3	shallow	3.63	0.9153
Inception_v3	from scratch	5.91	0.9743
Inception_v3	deep	5.64	0.9976
ResNet34	shallow	1.13	0.9475
ResNet34	from scratch	1.88	0.9848
ResNet34	deep	1.88	0.9967
Squeezenet1_1	shallow	0.85	0.9626
Squeezenet1_1	from scratch	1.05	0.9249
Squeezenet1_1	deep	2.10	0.992
VGG13	shallow	1.49	0.9223
VGG13	from scratch	3.55	0.9795
VGG13	deep	3.55	0.9949

NOTE: All the others results are stored in stats.csv

Graph

Visualization Experiments

@Contributor: Brahimi Mohamed

Prerequisites:

Train the new model or download pretrained models on 10 classes of Tomato from PlantVillage dataset: AlexNet or VGG13.

Occlusion Experiment

Occlusion experiments for producing the heat maps that show visually the influence of each region on the classification.

Usage:

Produce the heat map and plot with occlusion.py and store the visualizations in output_dir:

python3 occlusion.py /path/to/dataset /path/to/output_dir model_name.pkl /path/to/image disease_name

Visualization Examples on AlexNet:

Early blight - original, size 80 stride 10, size 100 stride 10 Late blight - original, size 80 stride 10, size 100 stride 10 Septoria leaf spot - original, size 50 stride 10, size 100 stride 10

Saliency Map Experiment

Saliency map is an analytical method that allows to estimate theimportance of each pixel, using only one forward and one backward pass through the network.

Usage:

Produce the visualization and plot with saliency.py and store the visualizations in output_dir:

python3 occlusion.py /path/to/model /path/to/dataset /path/to/image class_name

Visualization Examples on VGG13:

Early blight - Original, Naive backpropagation , Guided backpropagation Late blight - Original, Naive backpropagation , Guided backpropagation Septoria leaf spot - Original, Naive backpropagation , Guided backpropagation