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Mini-Nav/mini-nav/feature_compressor/examples/visualization.py

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Python

"""Visualization example for DINOv2 Feature Compressor."""
import sys
from pathlib import Path
# Add parent to path for imports
sys.path.insert(0, str(Path(__file__).parent.parent.parent))
import numpy as np
import torch
from dino_feature_compressor import FeatureVisualizer
def main():
# Generate synthetic features for demonstration
print("Generating synthetic features...")
n_samples = 100
n_features = 256
# Create two clusters
cluster1 = np.random.randn(50, n_features) + 2
cluster2 = np.random.randn(50, n_features) - 2
features = np.vstack([cluster1, cluster2])
labels = ["Cluster A"] * 50 + ["Cluster B"] * 50
features_tensor = torch.tensor(features, dtype=torch.float32)
# Initialize visualizer
print("Initializing FeatureVisualizer...")
viz = FeatureVisualizer()
output_dir = Path(__file__).parent.parent.parent / "outputs"
output_dir.mkdir(parents=True, exist_ok=True)
# Create histogram
print("Creating histogram...")
fig_hist = viz.plot_histogram(features_tensor, title="Feature Distribution")
viz.save(fig_hist, str(output_dir / "feature_histogram"), formats=["html", "json"])
print(f"Saved histogram to {output_dir / 'feature_histogram.html'}")
# Create PCA 2D projection
print("Creating PCA 2D projection...")
fig_pca = viz.plot_pca_2d(features_tensor, labels=labels)
viz.save(fig_pca, str(output_dir / "feature_pca_2d"), formats=["html", "json"])
print(f"Saved PCA to {output_dir / 'feature_pca_2d.html'}")
# Create comparison plot
print("Creating comparison plot...")
features_list = [torch.tensor(cluster1), torch.tensor(cluster2)]
names = ["Cluster A", "Cluster B"]
fig_comp = viz.plot_comparison(features_list, names)
viz.save(fig_comp, str(output_dir / "feature_comparison"), formats=["html", "json"])
print(f"Saved comparison to {output_dir / 'feature_comparison.html'}")
print("\nDone! All visualizations saved to outputs/ directory.")
if __name__ == "__main__":
main()