Collect and label tiles
Gather representative satellite tiles and create per-pixel masks for a small validation set; ensure labels cover seasonal and sensor variation.
Perform semantic segmentation. Assess per-class overlap.
Semantic segmentation assigns a class label to every pixel in an aerial or satellite image. Typical challenges include class imbalance, seasonal and atmospheric variation, mixed land cover within tiles, and the need for high-resolution labels for evaluation.
Learning concept · Not a validated service
Semantic segmentation assigns a class label to every pixel in an aerial or satellite image. Typical challenges include class imbalance, seasonal and atmospheric variation, mixed land cover within tiles, and the need for high-resolution labels for evaluation.
A proposed application: produce per-pixel land-cover maps to assist planning or monitoring, with a human-in-the-loop for any operational decisions. This starter does not deliver that application; a human reviewer should remain in charge of operational use.
Gather representative satellite tiles and create per-pixel masks for a small validation set; ensure labels cover seasonal and sensor variation.
Tile large images to a fixed patch size, normalise radiometry, and store images and masks in a dataset class compatible with a PyTorch dataloader.
Fine-tune a compact encoder–decoder (for example a small U-Net) and measure per-class IoU; use class-balanced sampling if classes are rare.
Report mean IoU and per-class IoU, inspect false negatives on classes of operational importance, and test inference latency on target hardware.
The supplied starter loads scikit-learn's digits dataset, splits it, fits a RandomForestClassifier to digit feature vectors, prints a classification report and shows a confusion matrix. It does not load satellite images, create pixel masks, or train a segmentation model.
digits = load_digits()
X_train, X_test, y_train, y_test = train_test_split(
digits.data,
digits.target,
test_size=0.25,
random_state=42,
stratify=digits.target,
)
model = RandomForestClassifier(n_estimators=300, random_state=42)
model.fit(X_train, y_train)The starter operates on the digits classification dataset (vectorised 8×8 images) and trains a RandomForest for multiclass digit labels. This is not a semantic segmentation pipeline: there are no per-pixel masks, no encoder–decoder model, and no IoU computation, so the code cannot validate segmentation on satellite imagery.
A proposed extension: replace the starter dataset with satellite tiles and pixel masks, fine-tune a compact U-Net or DeepLabV3 backbone on a small labelled set, and export an inference script that returns masks and confidence maps.
This is a potential application pathway, not a delivered product. The supplied starter does not implement this service or validate it with real users.
Networkers Home runs this topic inside its AI Engineer Course, with placement support and hands-on labs.