Initial implementation of Histograms of Oriented Gradients

scikits/image/feature/tests/test_hog.py

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+# Authors: Brian Holt
+#
+# License: BSD
+
+import numpy as np
+import scipy as sp
+from scipy import ndimage
+
+from numpy.testing import assert_raises
+
+from scikits.image.feature import histogram_of_oriented_gradients  
+
+def test_histogram_of_oriented_gradients():
+    img = sp.lena().astype(np.int8) 
+    
+    fd, hog_image = histogram_of_oriented_gradients(img, 
+                                                    n_orientations=9, 
+                                                    ppc=(8,8), 
+                                                    cpb=(1,1), 
+                                                    visualise=False)
+    assert len(fd) == 9 * (512//8) ** 2
+    
+if __name__ == '__main__':
+    import nose
+    nose.runmodule()