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* utils/rotate.py: Fix two bugs which cause wrong resultsAaron LI2016-10-261-4/+13
| | | | | | | * Fix the wrong output shape: wrongly swap the row and column * Fix the area mapping method, which may give zero values when the index of the input is integer, which cause problem to calculate the overlapping areas.
* Add utils/rotate.py: Implement basic image rotationAaron LI2016-10-261-0/+131
The "rotate_center()" function rotates a gray-scale image by a given angle about its center, using the area mapping method or simple nearest neighbor. This function is `numba` JIT-optimized, and can replace the `scipy.ndimage.rotate()` function.