diff options
Diffstat (limited to 'lib/utils/geometry.py')
| -rw-r--r-- | lib/utils/geometry.py | 12 |
1 files changed, 8 insertions, 4 deletions
diff --git a/lib/utils/geometry.py b/lib/utils/geometry.py index c07172c7..2903bc56 100644 --- a/lib/utils/geometry.py +++ b/lib/utils/geometry.py @@ -182,13 +182,17 @@ def smooth_path(path, smoothness=100.0): coords = _remove_duplicate_coordinates(np.array(path)) num_points = len(coords) - # splprep's s parameter seems to depend on the number of points you pass - # as per the docs, so let's normalize it. - s = round(smoothness / 100 * num_points) + # s is explained in this issue: https://github.com/scipy/scipy/issues/11916 + # the smoothness parameter limits how much the smoothed path can deviate + # from the original path. The standard deviation of the distance between + # the smoothed path and the original path is equal to the smoothness. + # In practical terms, if smoothness is 1mm, then the smoothed path can be + # up to 1mm away from the original path. + s = num_points * smoothness ** 2 # .T transposes the array (for some reason splprep expects # [[x1, x2, ...], [y1, y2, ...]] - tck, fp, ier, msg = splprep(coords.T, s=s, nest=-1, full_output=1) + tck, fp, ier, msg = splprep(coords.T, s=s, k=3, nest=-1, full_output=1) if ier > 0: from ..debug import debug debug.log(f"error {ier} smoothing path: {msg}") |