mantidimaging.core.operations.median_filter.median_filter module

class mantidimaging.core.operations.median_filter.median_filter.KernelSpinBox(on_change: Callable)[source]

Bases: PyQt5.QtWidgets.QSpinBox

validate(input: str, pos: int) → Tuple[PyQt5.QtGui.QValidator.State, str, int][source]

Validate the spin box input. Returns as Intermediate state if the input is empty or contains an even number, otherwise it returns Acceptable.

class mantidimaging.core.operations.median_filter.median_filter.MedianFilter[source]

Bases: mantidimaging.core.operations.base_filter.BaseFilter

Applies Median filter to the data.

Intended to be used on: Projections or reconstructed slices

When: As a pre-processing or post-reconstruction step to reduce noise.

Note: NaN values are preserved through the filter. They are treated as negative infinity while calculating neighbouring pixels.

static execute_wrapper(size_field=None, mode_field=None, use_gpu_field=None)[source]

Should construct a partial call to _filter_func using values taken from the widgets passed to this function as kwargs. :param kwargs: widgets which contain values required for _filter_func. :return: a partial call to _filter_func using parameters taken from the input widgets.

static filter_func(data: mantidimaging.core.data.images.Images, size=None, mode='reflect', cores=None, chunksize=None, progress=None, force_cpu=True)[source]
Parameters

  • data – Input data as an Images object.

  • size – Size of the kernel

  • mode – The mode with which to handle the edges. One of [reflect, constant, nearest, mirror, wrap]. Modes are described in the SciPy documentation.

  • cores – The number of cores that will be used to process the data.

  • chunksize – The number of chunks that each worker will receive.

  • progress – The object for displaying the progress.

  • force_cpu – Whether or not to use the CPU.

Returns

Returns the processed data

filter_name = 'Median'
static register_gui(form: QFormLayout, on_change: Callable, view) → Dict[str, Any][source]

Adds any required input widgets to the given form and returns references to them.

The return values should be in a dict which can be unpacked as kwargs for a call to the operations execute_wrapper.

Parameters

  • view –

  • form – the layout to create input widgets in

  • on_change – the filter view action to be bound to all created inputs

Returns

the widgets bound as kwargs which are needed to call execute_wrapper

mantidimaging.core.operations.median_filter.median_filter.modes()[source]