Small fixes on the Harris corner detector - documentation, method renaming etc

doc/examples/plot_harris.py

@@ -3,29 +3,28 @@
 Harris Corner detector
 ===============================================================================
 
-The Harris corner filter detects interest points using edge detection in many
-direction.
+The Harris corner filter detects interest points using edge detection in
+multiple direction.
 """
 
 from matplotlib import pyplot as plt
-from matplotlib import cm
 
-from skimage import data
-from skimage.filter import harris_corner_detector
+from skimage import data, img_as_float
+from skimage.filter import harris
 
 
 def plot_harris_points(image, filtered_coords):
     """ plots corners found in image"""
 
-    plt.subplot(111)
-    plt.imshow(image, cmap=cm.gray)
+    plt.plot()
+    plt.imshow(image)
     plt.plot([p[1] for p in filtered_coords],
-                [p[0] for p in filtered_coords],
-                'b.')
+             [p[0] for p in filtered_coords],
+             'b.')
     plt.axis('off')
     plt.show()
 
 
-im = data.lena().astype(float)
-filtered_coords = harris_corner_detector(im, 6)
+im = img_as_float(data.lena())
+filtered_coords = harris(im, 6)
 plot_harris_points(im, filtered_coords)