From f88a852f659ea3223ce69ac147912b1d346cf7be Mon Sep 17 00:00:00 2001
From: Paweł Redman <pawel.redman@gmail.com>
Date: Sat, 25 Jul 2020 17:22:36 +0200
Subject: Factor out printing progress information.

This way using tqdm is optional and not a direct dependency of otsu2018.py.
---
 clustering.py | 52 ++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 52 insertions(+)
 create mode 100644 clustering.py

(limited to 'clustering.py')

diff --git a/clustering.py b/clustering.py
new file mode 100644
index 0000000..527830b
--- /dev/null
+++ b/clustering.py
@@ -0,0 +1,52 @@
+import os
+import matplotlib.pyplot as plt
+import tqdm
+
+from colour import SpectralShape, COLOURCHECKER_SDS, sd_to_XYZ
+
+from otsu2018 import load_Otsu2018_spectra, Tree
+
+
+if __name__ == '__main__':
+    print('Loading spectral data...')
+    sds = load_Otsu2018_spectra('CommonData/spectrum_m.csv', every_nth=50)
+    shape = SpectralShape(380, 730, 10)
+
+    print('Initializing the tree...')
+    tree = Tree(sds, shape)
+
+    print('Clustering...')
+    before = tree.total_reconstruction_error()
+    tree.optimise(progress_bar=tqdm.tqdm)
+    after = tree.total_reconstruction_error()
+
+    print('Error before: %g' % before)
+    print('Error after:  %g' % after)
+
+    print('Saving the dataset...')
+    os.makedirs('datasets', exist_ok=True)
+    tree.write_python_dataset('datasets/otsu2018.py')
+
+    print('Plotting...')
+    tree.visualise()
+
+    plt.figure()
+
+    examples = COLOURCHECKER_SDS['ColorChecker N Ohta'].items()
+    for i, (name, sd) in enumerate(examples):
+        plt.subplot(2, 3, 1 + i)
+        plt.title(name)
+
+        plt.plot(sd.wavelengths, sd.values, label='Original')
+
+        XYZ = sd_to_XYZ(sd) / 100
+        recovered_sd = tree.reconstruct(XYZ)
+        plt.plot(recovered_sd.wavelengths, recovered_sd.values,
+                 label='Recovered')
+
+        plt.legend()
+
+        if i + 1 == 6:
+            break
+
+    plt.show()
-- 
cgit