Optimize orient_pixels performance by replacing np.rot90 with manual slicing and swapaxes.#350
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…slicing and swapaxes. Benchmark results (local runs, n=10): | name | old time/op | new time/op | delta | | :--- | :--- | :--- | :--- | | OrientPixels_320x480_rot1_view | 9.47µs ± 3% | 0.84µs ± 8% | -91.15% (p=0.000 n=10) | | OrientPixels_320x480_rot2_view | 7.15µs ± 2% | 0.55µs ± 18% | -92.25% (p=0.000 n=10) | | OrientPixels_320x480_rot3_view | 9.36µs ± 3% | 0.80µs ± 9% | -91.49% (p=0.000 n=10) | | OrientPixels_1080x1920_rot1_view | 9.39µs ± 1% | 0.73µs ± 8% | -92.23% (p=0.000 n=10) | | OrientPixels_1080x1920_rot2_view | 7.14µs ± 5% | 0.57µs ± 9% | -92.08% (p=0.000 n=10) | | OrientPixels_1080x1920_rot3_view | 9.36µs ± 1% | 0.77µs ± 8% | -91.79% (p=0.000 n=10) | | OrientPixels_320x480_rot1_copy | 795µs ± 1% | 772µs ± 1% | -2.84% (p=0.000 n=10) | | OrientPixels_320x480_rot2_copy | 789µs ± 3% | 766µs ± 1% | -2.97% (p=0.000 n=10) | | OrientPixels_320x480_rot3_copy | 797µs ± 3% | 769µs ± 1% | -3.56% (p=0.000 n=10) | PiperOrigin-RevId: 936720087
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Optimize orient_pixels performance by replacing np.rot90 with manual slicing and swapaxes.
Benchmark results (local runs, n=10):