mirror of
https://github.com/wassname/scikit-image.git
synced 2026-06-29 07:24:09 +08:00
Tony S Yu
fd0e88b986
* Add some references. * Make keyword argument explicit in example. * Remove test class in favor of functions since no setup was required. * Clean up docstrings.
35 lines
918 B
Python
35 lines
918 B
Python
"""
|
|
===============================================================================
|
|
Harris Corner detector
|
|
===============================================================================
|
|
|
|
The Harris corner filter [1]_ detects "interest points" [2]_ using edge
|
|
detection in multiple directions.
|
|
|
|
.. [1] http://en.wikipedia.org/wiki/Corner_detection
|
|
.. [2] http://en.wikipedia.org/wiki/Interest_point_detection
|
|
"""
|
|
|
|
from matplotlib import pyplot as plt
|
|
|
|
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.plot()
|
|
plt.imshow(image)
|
|
plt.plot([p[1] for p in filtered_coords],
|
|
[p[0] for p in filtered_coords],
|
|
'b.')
|
|
plt.axis('off')
|
|
plt.show()
|
|
|
|
|
|
im = img_as_float(data.lena())
|
|
filtered_coords = harris(im, min_distance=6)
|
|
plot_harris_points(im, filtered_coords)
|
|
|