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nabu.preproc.ccd_cuda

source module nabu.preproc.ccd_cuda

Classes

  • CudaCCDFilter — Initialize a CudaCCDCorrection instance. Please refer to the documentation of CCDCorrection.

  • CudaLog — Helper class to take -log(radios)

source class CudaCCDFilter(radios_shape, correction_type='median_clip', median_clip_thresh=0.1, abs_diff=False, cuda_options=None)

Bases : CCDFilter

Initialize a CudaCCDCorrection instance. Please refer to the documentation of CCDCorrection.

Methods

source method CudaCCDFilter.median_clip_correction(radio, output=None)

Compute the median clip correction on one image.

Parameters

  • radio : cupy array — A radio image

  • output : cupy array — Output data.

source class CudaLog(radios_shape, clip_min=None, clip_max=None)

Bases : Log

Helper class to take -log(radios)

Initialize a Log processing.

Parameters

  • radios_shape : tuple — The shape of 3D radios stack.

  • clip_min : float, optional — Data smaller than this value is replaced by this value.

  • clip_max : float, optional. — Data bigger than this value is replaced by this value.

Methods

source method CudaLog.take_logarithm(radios, clip_min=None, clip_max=None)

Take the negative logarithm of a radios chunk.

Parameters

  • radios : cupy array — Radios chunk If not provided, a new GPU array is created.

  • clip_min : float, optional — Before taking the logarithm, the values are clipped to this minimum.

  • clip_max : float, optional — Before taking the logarithm, the values are clipped to this maximum.