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After resampling the tile size needs to be rounded up in tileiterator #538

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Jan 25, 2021
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After resampling the tile size needs to be rounded up in tileiterator #538

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10 changes: 5 additions & 5 deletions large_image/tilesource/base.py
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Original file line number Diff line number Diff line change
Expand Up @@ -925,12 +925,12 @@ def _tileIteratorInfo(self, **kwargs):
False if round(requestedScale, 2) == 1.0 or
kwargs.get('resample') in (None, False) else kwargs.get('resample'))
# If we need to resample to make tiles at a non-native resolution,
# adjust the tile size and tile overlap paramters appropriately.
# adjust the tile size and tile overlap parameters appropriately.
if resample is not False:
tile_size['width'] = max(1, int(round(tile_size['width'] * requestedScale)))
tile_size['height'] = max(1, int(round(tile_size['height'] * requestedScale)))
tile_overlap['x'] = int(round(tile_overlap['x'] * requestedScale))
tile_overlap['y'] = int(round(tile_overlap['y'] * requestedScale))
tile_size['width'] = max(1, int(math.ceil(tile_size['width'] * requestedScale)))
tile_size['height'] = max(1, int(math.ceil(tile_size['height'] * requestedScale)))
tile_overlap['x'] = int(math.ceil(tile_overlap['x'] * requestedScale))
tile_overlap['y'] = int(math.ceil(tile_overlap['y'] * requestedScale))

# If the overlapped tiles don't run over the edge, then the functional
# size of the region is reduced by the overlap. This factor is stored
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