Generated by Cython 3.0.2
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Click on a line that starts with a "+" to see the C code that Cython generated for it.
Raw output: _le_interpolation_nearest_neighbor.c
+001: # cython: infer_types=True, wraparound=False, nonecheck=False, boundscheck=False, cdivision=True, language_level=3, profile=False, autogen_pxd=False
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002:
+003: import numpy as np
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004:
005: cimport numpy as np
006:
007: from cython.parallel import parallel, prange
008:
009: from libc.math cimport cos, sin, pi, hypot, exp, log
010:
+011: from .__interpolation_tools__ import check_image, value2array
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+012: from .__liquid_engine__ import LiquidEngine
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+013: from .__opencl__ import cl, cl_array
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+014: from ._le_interpolation_nearest_neighbor_ import \
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+015: njit_shift_magnify as _njit_shift_magnify
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+017: njit_shift_scale_rotate as _njit_shift_magnify_rotate
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+018: from ._le_interpolation_nearest_neighbor_ import \
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+019: shift_magnify as _py_shift_magnify
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022:
023:
024: cdef extern from "_c_interpolation_nearest_neighbor.h":
025: float _c_interpolate(float *image, float row, float col, int rows, int cols) nogil
026:
027:
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041: # tag-start: _le_interpolation_nearest_neighbor.ShiftAndMagnify.run
+042: def run(self, image, shift_row, shift_col, float magnification_row, float magnification_col, run_type=None) -> np.ndarray:
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043: """
044: Shift and magnify an image using Nearest-Neighbor interpolation
045: :param image: The image to shift and magnify
046: :type image: np.ndarray or memoryview
047: :param shift_row: The number of rows to shift the image
048: :type shift_row: int or float or np.ndarray
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050: :type shift_col: int or float or np.ndarray
051: :param magnification_row: The magnification factor for the rows
052: :type magnification_row: float
053: :param magnification_col: The magnification factor for the columns
054: :type magnification_col: float
055: :return: The shifted and magnified image
056: """
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061: # tag-end
062:
063: # tag-start: _le_interpolation_nearest_neighbor.ShiftAndMagnify.benchmark
+064: def benchmark(self, image, shift_row, shift_col, float magnification_row, float magnification_col):
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065: """
066: Benchmark the ShiftAndMagnify run function in multiple run types
067: :param image: The image to shift and magnify
068: :type image: np.ndarray or memoryview
069: :param shift_row: The number of rows to shift the image
070: :type shift_row: int or float or np.ndarray
071: :param shift_col: The number of columns to shift the image
072: :type shift_col: int or float or np.ndarray
073: :param magnification_row: The magnification factor for the rows
074: :type magnification_row: float
075: :param magnification_col: The magnification factor for the columns
076: :type magnification_col: float
077: :return: The benchmark results
078: :rtype: [[run_time, run_type_name, return_value], ...]
079: """
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+081: shift_row = value2array(shift_row, image.shape[0])
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084: # tag-end
085:
086: # tag-start: _le_interpolation_nearest_neighbor.ShiftAndMagnify._run_opencl
087: #@LiquidEngine._logger(logger)
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/* Python wrapper */
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PyObject *const *__pyx_args, Py_ssize_t __pyx_nargs, PyObject *__pyx_kwds
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PyObject *__pyx_args, PyObject *__pyx_kwds
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245: # tag-end
246:
247: # tag-copy: _le_interpolation_nearest_neighbor.ShiftAndMagnify._run_unthreaded; replace("_run_unthreaded", "_run_threaded_guided"); replace("range(colsM)", 'prange(colsM, schedule="guided")')
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306: # tag-start: _le_interpolation_nearest_neighbor.ShiftScaleRotate.run
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308: """
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328: # tag-end
329:
330:
331: # tag-start: _le_interpolation_nearest_neighbor.ShiftScaleRotate.benchmark
+332: def benchmark(self, image, shift_row, shift_col, float scale_row, float scale_col, float angle):
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333: """
334: Benchmark the ShiftMagnifyScale run function in multiple run types
335: :param image: The image to shift, scale and rotate
336: :type image: np.ndarray
337: :param shift_row: The number of rows to shift the image
338: :type shift_row: int or float or np.ndarray
339: :param shift_col: The number of columns to shift the image
340: :type shift_col: int or float or np.ndarray
341: :param scale_row: The scale factor for the rows
342: :type scale_row: float
343: :param scale_col: The scale factor for the columns
344: :type scale_col: float
345: :param angle: Angle of rotation in radians. Positive is counter clockwise
346: :type angle: float
347: :return: The benchmark results
348: :rtype: [[run_time, run_type_name, return_value], ...]
349: """
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528: # cdef float center_rowM = (rows * scale_row) / 2
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544:
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547:
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600: scale_row=1, scale_col=1, angle=0) -> np.ndarray:
+601: image_out = _njit_shift_magnify_rotate(image, shift_row, shift_col, scale_row, scale_col, angle)
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603: # tag-end
604:
605:
606: '''
607: class PolarTransform(LiquidEngine):
608: """
609: Polar Transformations using the NanoPyx Liquid Engine
610: """
611:
612: _has_opencl = False
613: _has_threaded = True
614: _has_threaded_static = True
615: _has_threaded_dynamic = True
616: _has_threaded_guided = True
617: _has_unthreaded = True
618: _has_python = False
619: _has_njit = False
620: _designation = "PolarTransform_NN"
621:
622: def __init__(self):
623: super().__init__()
624:
625: # tag-start: _le_interpolation_nearest_neighbor.PolarTransform.run
626: def run(self, image, tuple out_shape, str scale, run_type=None) -> np.ndarray:
627: """
628: Polar Transform an image using Nearest-Neighbor interpolation
629: :param image: The image to transform
630: :type image: np.ndarray or memoryview
631: :param out_shape: Desired shape for the output image
632: :type out_shape: tuple (n_row, n_col)
633: :param scale: Linear or Log transform
634: :type scale: str, either 'log' or 'linear'
635: :return: The tranformed image in polar coordinates
636: """
637: image = check_image(image)
638: nrow, ncol = out_shape
639: if scale not in ['linear', 'log']:
640: scale = 'linear'
641: return self._run(image, nrow, ncol, scale, run_type=run_type)
642: # tag-end
643:
644: # tag-start: _le_interpolation_nearest_neighbor.PolarTransform.benchmark
645: def benchmark(self, image, tuple out_shape, str scale):
646: """
647: Benchmark the PolarTransform run function in multiple run types
648: :param image: The image to transform
649: :type image: np.ndarray or memoryview
650: :param out_shape: Desired shape for the output image
651: :type out_shape: tuple (n_row, n_col)
652: :param scale: Linear or Log transform
653: :type scale: str, either 'log' or 'linear'
654: :return: The benchmark results
655: :rtype: [[run_time, run_type_name, return_value], ...]
656: """
657: image = check_image(image)
658: nrow, ncol = out_shape
659: if scale not in ['linear', 'log']:
660: scale = 'linear'
661: return super().benchmark(image, nrow, ncol, scale)
662: # tag-end
663:
664: # tag-start: _le_interpolation_nearest_neighbor.PolarTransform._run_opencl
665: @LiquidEngine._logger(logger)
666: def _run_opencl(self, float[:,:,:] image, int nrow, int ncol, str scale):
667:
668: # Swap row and columns because opencl is strange and stores the
669: # array in a buffer in fortran ordering despite the original
670: # numpy array being in C order.
671: image = np.ascontiguousarray(np.swapaxes(image, 1, 2), dtype=np.float32)
672:
673: code = self._get_cl_code("_le_interpolation_nearest_neighbor_.cl")
674:
675: cdef int nFrames = image.shape[0]
676: cdef int rowsM = image.shape[1]
677: cdef int colsM = image.shape[2]
678:
679: image_in = cl_array.to_device(cl_queue, image)
680: image_out = cl_array.zeros(cl_queue, (nFrames, nrow, ncol), dtype=np.float32)
681:
682: cdef int scale_int = 0
683: if scale == 'log':
684: scale_int = 1
685:
686: # Create the program
687: prg = cl.Program(cl_ctx, code).build()
688:
689: # Run the kernel
690: prg.PolarTransform(
691: cl_queue,
692: image_out.shape,
693: None,
694: image_in.data,
695: image_out.data,
696: scale_int
697: )
698:
699: # Wait for queue to finish
700: cl_queue.finish()
701:
702: # Swap rows and columns back
703: return np.ascontiguousarray(np.swapaxes(image_out.get(), 1, 2), dtype=np.float32)
704: # tag-end
705:
706: # tag-start: _le_interpolation_nearest_neighbor.PolarTransform._run_unthreaded
707: @LiquidEngine._logger(logger)
708: def _run_unthreaded(self, float[:,:,:] image, int nrow, int ncol, str scale):
709:
710: cdef int nFrames = image.shape[0]
711: cdef int rows = image.shape[1]
712: cdef int cols = image.shape[2]
713:
714: cdef float c_rows = rows / 2
715: cdef float c_cols = cols / 2
716:
717: # angle on rows, radius on cols
718: image_out = np.zeros((nFrames, nrow, ncol), dtype=np.float32)
719: cdef float[:,:,:] _image_out = image_out
720: cdef float[:,:,:] _image_in = image
721:
722: # max_angle = 2*pi
723: cdef float max_radius = hypot(c_rows, c_cols)
724:
725: cdef int f,i,j
726: cdef float angle, radius, col, row
727:
728: with nogil:
729: for f in range(nFrames):
730: for i in range(ncol):
731: for j in range(nrow):
732: angle = j * 2 * pi / (nrow-1)
733: if scale=='log':
734: radius = exp(i*log(max_radius)/(ncol-1))
735: else:
736: radius = i * max_radius / (ncol-1)
737: col = radius * cos(angle) + c_cols
738: row = radius * sin(angle) + c_rows
739: _image_out[f, j, i] = _c_interpolate(&_image_in[f, 0, 0], row, col, rows, cols)
740:
741: return image_out
742: # tag-end
743:
744: # tag-copy: _le_interpolation_nearest_neighbor.PolarTransform._run_unthreaded; replace("_run_unthreaded", "_run_threaded"); replace("range(ncol)", "prange(ncol)")
745: @LiquidEngine._logger(logger)
746: def _run_threaded(self, float[:,:,:] image, int nrow, int ncol, str scale):
747:
748: cdef int nFrames = image.shape[0]
749: cdef int rows = image.shape[1]
750: cdef int cols = image.shape[2]
751:
752: cdef float c_rows = rows / 2
753: cdef float c_cols = cols / 2
754:
755: # angle on rows, radius on cols
756: image_out = np.zeros((nFrames, nrow, ncol), dtype=np.float32)
757: cdef float[:,:,:] _image_out = image_out
758: cdef float[:,:,:] _image_in = image
759:
760: # max_angle = 2*pi
761: cdef float max_radius = hypot(c_rows, c_cols)
762:
763: cdef int f,i,j
764: cdef float angle, radius, col, row
765:
766: with nogil:
767: for f in range(nFrames):
768: for i in prange(ncol):
769: for j in range(nrow):
770: angle = j * 2 * pi / (nrow-1)
771: if scale=='log':
772: radius = exp(i*log(max_radius)/(ncol-1))
773: else:
774: radius = i * max_radius / (ncol-1)
775: col = radius * cos(angle) + c_cols
776: row = radius * sin(angle) + c_rows
777: _image_out[f, j, i] = _c_interpolate(&_image_in[f, 0, 0], row, col, rows, cols)
778:
779: return image_out
780: # tag-end
781:
782: # tag-copy: _le_interpolation_nearest_neighbor.PolarTransform._run_unthreaded; replace("_run_unthreaded", "_run_threaded_static"); replace("range(ncol)", 'prange(ncol, schedule="static")')
783: @LiquidEngine._logger(logger)
784: def _run_threaded_static(self, float[:,:,:] image, int nrow, int ncol, str scale):
785:
786: cdef int nFrames = image.shape[0]
787: cdef int rows = image.shape[1]
788: cdef int cols = image.shape[2]
789:
790: cdef float c_rows = rows / 2
791: cdef float c_cols = cols / 2
792:
793: # angle on rows, radius on cols
794: image_out = np.zeros((nFrames, nrow, ncol), dtype=np.float32)
795: cdef float[:,:,:] _image_out = image_out
796: cdef float[:,:,:] _image_in = image
797:
798: # max_angle = 2*pi
799: cdef float max_radius = hypot(c_rows, c_cols)
800:
801: cdef int f,i,j
802: cdef float angle, radius, col, row
803:
804: with nogil:
805: for f in range(nFrames):
806: for i in prange(ncol, schedule="static"):
807: for j in range(nrow):
808: angle = j * 2 * pi / (nrow-1)
809: if scale=='log':
810: radius = exp(i*log(max_radius)/(ncol-1))
811: else:
812: radius = i * max_radius / (ncol-1)
813: col = radius * cos(angle) + c_cols
814: row = radius * sin(angle) + c_rows
815: _image_out[f, j, i] = _c_interpolate(&_image_in[f, 0, 0], row, col, rows, cols)
816:
817: return image_out
818: # tag-end
819:
820: # tag-copy: _le_interpolation_nearest_neighbor.PolarTransform._run_unthreaded; replace("_run_unthreaded", "_run_threaded_dynamic"); replace("range(ncol)", 'prange(ncol, schedule="dynamic")')
821: @LiquidEngine._logger(logger)
822: def _run_threaded_dynamic(self, float[:,:,:] image, int nrow, int ncol, str scale):
823:
824: cdef int nFrames = image.shape[0]
825: cdef int rows = image.shape[1]
826: cdef int cols = image.shape[2]
827:
828: cdef float c_rows = rows / 2
829: cdef float c_cols = cols / 2
830:
831: # angle on rows, radius on cols
832: image_out = np.zeros((nFrames, nrow, ncol), dtype=np.float32)
833: cdef float[:,:,:] _image_out = image_out
834: cdef float[:,:,:] _image_in = image
835:
836: # max_angle = 2*pi
837: cdef float max_radius = hypot(c_rows, c_cols)
838:
839: cdef int f,i,j
840: cdef float angle, radius, col, row
841:
842: with nogil:
843: for f in range(nFrames):
844: for i in prange(ncol, schedule="dynamic"):
845: for j in range(nrow):
846: angle = j * 2 * pi / (nrow-1)
847: if scale=='log':
848: radius = exp(i*log(max_radius)/(ncol-1))
849: else:
850: radius = i * max_radius / (ncol-1)
851: col = radius * cos(angle) + c_cols
852: row = radius * sin(angle) + c_rows
853: _image_out[f, j, i] = _c_interpolate(&_image_in[f, 0, 0], row, col, rows, cols)
854:
855: return image_out
856: # tag-end
857:
858: # tag-copy: _le_interpolation_nearest_neighbor.PolarTransform._run_unthreaded; replace("_run_unthreaded", "_run_threaded_guided"); replace("range(ncol)", 'prange(ncol, schedule="guided")')
859: @LiquidEngine._logger(logger)
860: def _run_threaded_guided(self, float[:,:,:] image, int nrow, int ncol, str scale):
861:
862: cdef int nFrames = image.shape[0]
863: cdef int rows = image.shape[1]
864: cdef int cols = image.shape[2]
865:
866: cdef float c_rows = rows / 2
867: cdef float c_cols = cols / 2
868:
869: # angle on rows, radius on cols
870: image_out = np.zeros((nFrames, nrow, ncol), dtype=np.float32)
871: cdef float[:,:,:] _image_out = image_out
872: cdef float[:,:,:] _image_in = image
873:
874: # max_angle = 2*pi
875: cdef float max_radius = hypot(c_rows, c_cols)
876:
877: cdef int f,i,j
878: cdef float angle, radius, col, row
879:
880: with nogil:
881: for f in range(nFrames):
882: for i in prange(ncol, schedule="guided"):
883: for j in range(nrow):
884: angle = j * 2 * pi / (nrow-1)
885: if scale=='log':
886: radius = exp(i*log(max_radius)/(ncol-1))
887: else:
888: radius = i * max_radius / (ncol-1)
889: col = radius * cos(angle) + c_cols
890: row = radius * sin(angle) + c_rows
891: _image_out[f, j, i] = _c_interpolate(&_image_in[f, 0, 0], row, col, rows, cols)
892:
893: return image_out
894: # tag-end
895:
896: # tag-start: _le_interpolation_nearest_neighbor.PolarTransform._run_python
897: @LiquidEngine._logger(logger)
898: def _run_python(self, image, nrow, ncol, scale):
899: return 0
900: # tag-end
901:
902: # tag-start: _le_interpolation_nearest_neighbor.PolarTransform._run_njit
903: @LiquidEngine._logger(logger)
904: def _run_njit(self, image, nrow, ncol, scale):
905: return 0
906: # tag-end
907: '''