wassname/scikit-image
1
0
Fork 0
mirror of https://github.com/wassname/scikit-image.git synced 2026-06-30 00:49:28 +08:00
Code Issues Packages Projects Releases Wiki Activity

Add example for corner_subpix function

Browse Source
This commit is contained in:
Johannes Schönberger
2013-11-03 09:23:35 +01:00
parent 40fc5d203f
commit dc35d3d1af
1 changed files with 22 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files
skimage/feature/corner.py
+22
View File
@@ -351,6 +351,28 @@ def corner_subpix(image, corners, window_size=11, alpha=0.99):
foerstner87.fast.pdf
.. [2] http://en.wikipedia.org/wiki/Corner_detection
Examples
--------
>>> from skimage.feature import corner_harris, corner_peaks, corner_subpix
>>> img = np.zeros((10, 10), dtype=int)
>>> img[:5, :5] = 1
>>> img[5:, 5:] = 1
>>> img
array([[1, 1, 1, 1, 1, 0, 0, 0, 0, 0],
[1, 1, 1, 1, 1, 0, 0, 0, 0, 0],
[1, 1, 1, 1, 1, 0, 0, 0, 0, 0],
[1, 1, 1, 1, 1, 0, 0, 0, 0, 0],
[1, 1, 1, 1, 1, 0, 0, 0, 0, 0],
[0, 0, 0, 0, 0, 1, 1, 1, 1, 1],
[0, 0, 0, 0, 0, 1, 1, 1, 1, 1],
[0, 0, 0, 0, 0, 1, 1, 1, 1, 1],
[0, 0, 0, 0, 0, 1, 1, 1, 1, 1],
[0, 0, 0, 0, 0, 1, 1, 1, 1, 1]])
>>> coords = corner_peaks(corner_harris(img), min_distance=2)
>>> coords_subpix = corner_subpix(img, coords, window_size=7)
>>> coords_subpix
array([[ 4.5, 4.5]])
"""
# window extent in one direction