Improve Performance of Segment Replacement #640
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This patch improves the performance of segment replacement (by average colors within the segments), used in `Superpixels` and `segment_voronoi()`. The new method is up to around 7x faster, more for smaller images and more segments. It can be slightly slower in some cases for large images (512x512 and larger). This change seems to improve the overall performance of `Superpixels` by a factor of around 1.1x to 1.4x (more for smaller images). It improves the overall performance of `segment_voronoi()` by about 1.1x to 2.0x and can reach much higher improvements in the case of very few segments that have to be replaced. Note that `segment_voronoi()` is used in `Voronoi`. Added functions: * `imgaug.augmenters.segmentation.replace_segments_` Added classes: * `imgaug.testutils.temporary_constants` (context)
Codecov Report
@@ Coverage Diff @@
## master #640 +/- ##
==========================================
- Coverage 96.37% 95.06% -1.31%
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Files 41 41
Lines 14683 14720 +37
==========================================
- Hits 14150 13993 -157
- Misses 533 727 +194 |
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This patch improves the performance of segment
replacement (by average colors within the segments),
used in
Superpixelsandsegment_voronoi().The new method is up to around 7x faster, more for
smaller images and more segments. It can be slightly
slower in some cases for large images (512x512 and
larger).
This change seems to improve the overall performance
of
Superpixelsby a factor of around 1.1x to 1.4x(more for smaller images).
It improves the overall performance of
segment_voronoi()by about 1.1x to 2.0x and canreach much higher improvements in the case of very few
segments that have to be replaced.
Note that
segment_voronoi()is used inVoronoi.Added functions:
imgaug.augmenters.segmentation.replace_segments_Added classes:
imgaug.testutils.temporary_constants(context)