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Add comments and rename variables for better readability

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Johannes Schönberger
2012-12-09 17:34:13 +01:00
parent 32cbf8e226
commit b22d570ff9
1 changed files with 7 additions and 5 deletions
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skimage/feature/corner.py
+7 -5
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@@ -425,11 +425,13 @@ def corner_subpix(image, corners, window_size=11, alpha=0.99):
ryy_edge = ry_edge * ry_edge
# determine corner class (dot or edge)
w_dot = np.sum(winx_winx * ryy_dot - 2 * winx_winy * rxy_dot \
+ winy_winy * rxx_dot)
w_edge = np.sum(winy_winy * ryy_edge + 2 * winx_winy * rxy_edge \
+ winx_winx * rxx_edge)
t = w_edge / w_dot
# variance for different models
var_dot = np.sum(winx_winx * ryy_dot - 2 * winx_winy * rxy_dot \
+ winy_winy * rxx_dot)
var_edge = np.sum(winy_winy * ryy_edge + 2 * winx_winy * rxy_edge \
+ winx_winx * rxx_edge)
# test value (F-distributed)
t = var_edge / var_dot
# 1 for edge, -1 for dot, 0 for "not classified"
corner_class = (t < t_crit_edge) - (t > t_crit_dot)