Source code for mantidimaging.core.operations.base_filter

# Copyright (C) 2022 ISIS Rutherford Appleton Laboratory UKRI
# SPDX - License - Identifier: GPL-3.0-or-later

from functools import partial
from typing import TYPE_CHECKING, Any, Callable, Dict, Optional
from enum import Enum, auto

import numpy as np

from import ImageStack

    from PyQt5.QtWidgets import QFormLayout, QWidget  # noqa: F401   # pragma: no cover
    from mantidimaging.gui.mvp_base import BaseMainWindowView  # pragma: no cover
    from mantidimaging.gui.widgets.dataset_selector import DatasetSelectorWidgetView

[docs] class FilterGroup(Enum): NoGroup = auto() Basic = auto() Advanced = auto()
[docs] class BaseFilter: filter_name = "Unnamed Filter" link_histograms = False show_negative_overlay = True operate_on_sinograms = False SINOGRAM_FILTER_INFO = "This filter will work on a\nsinogram view of the data." __name__ = "BaseFilter" """ The base class for filter algorithms, which should extend this class. All of this classes methods must be overridden, except sv_params and the do_before and do_after wrappers which are optional. """
[docs] @staticmethod def filter_func(data: ImageStack) -> ImageStack: """ Executes the filter algorithm on a given set of image data with the given parameters. :param data: the image data to apply the filter to :param kwargs: any additional arguments which the specific filter uses :return: the image data after applying the filter """ raise_not_implemented("filter_func") return ImageStack(np.asarray([]))
[docs] @staticmethod def execute_wrapper(args) -> partial: # type: ignore """ 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. """ raise_not_implemented("execute_wrapper") return partial(lambda: None)
[docs] @staticmethod def register_gui(form: 'QFormLayout', on_change: Callable, view: 'BaseMainWindowView') -> Dict[str, 'QWidget']: """ 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`. :param view: :param form: the layout to create input widgets in :param on_change: the filter view action to be bound to all created inputs :return: the widgets bound as kwargs which are needed to call execute_wrapper """ raise_not_implemented("register_gui") return {}
[docs] @staticmethod def sv_params() -> Dict[str, Any]: """ Any parameters required from the StackVisualizer ie. ROI :return: a map of parameters names """ return {}
[docs] @staticmethod def validate_execute_kwargs(kwargs: Dict[str, Any]) -> bool: return True
[docs] @staticmethod def group_name() -> FilterGroup: return FilterGroup.NoGroup
[docs] @staticmethod def get_images_from_stack(widget: "DatasetSelectorWidgetView", msg: str) -> Optional[ImageStack]: stack_uuid = widget.current() if stack_uuid is None: raise ValueError(f"No stack for {msg}") try: stack = widget.main_window.get_stack(stack_uuid) except KeyError: # Can happen if stack is closed while selected in the form raise ValueError(f"Selected stack for {msg} does not exist") return stack
[docs] def raise_not_implemented(function_name): raise NotImplementedError(f"Required method '{function_name}' not implemented for filter")