Fusion: classical

Select with config.fusion.set_backend('classical').

Parameter	Type	Default	Meaning / values
config.fusion.parameters.max_alpha	float	0.8	Maximum anomaly mixing weight; range [0, 1].
config.fusion.parameters.sq	float	2	Shape parameter for the spatial alpha mask.
config.fusion.parameters.steepness_factor	float	3	Steepness of the transition at the anomaly boundary.
config.fusion.parameters.upsampling_factor	int	2	Factor for finer alpha mask computation.
config.fusion.parameters.sobel_threshold	float	0.05	Threshold for Sobel edge detection.
config.fusion.parameters.dilation_size	int	2	Width of mask dilation.
config.fusion.parameters.shave_pixels	int	1	Number of boundary pixels removed.
config.fusion.parameters.fusion_use_sobel_for_alpha_mask	bool	False	Use Sobel edges for the alpha mask.
config.fusion.parameters.fusion_variation	bool	True	Enable random variation of fusion parameters.
config.fusion.parameters.alpha_variation	float	0.05	Variation strength for max_alpha.
config.fusion.parameters.sq_variation	float	0.1	Variation strength for sq.
config.fusion.parameters.steepness_variation	float	0.1	Variation strength for steepness_factor.
config.fusion.parameters.selected_confidence	str	'90%'	Confidence level: 68%, 80%, 90%, 95%, or 99%.
config.fusion.parameters.fusion_normalization_border_width	int \| None	2	Context border width: None disables normalization; -1 uses the whole image.
config.fusion.parameters.fusion_restore_anomaly_bg_relation	bool	True	Restore the intensity relationship between anomaly and background.
config.fusion.parameters.fusion_relation_mode	str	'delta'	Intensity relationship method: 'delta' or 'ratio'.
config.fusion.parameters.fusion_relation_norm_classes_separately	bool	False	Normalize the intensity relationship separately for each anomaly class.
config.fusion.parameters.fusion_relation_min_context_size	int	8	Minimum number of context pixels for the intensity relationship.
config.fusion.parameters.fusion_keep_bg	bool	False	Keep the synthetic anomaly background.
config.fusion.parameters.fusion_bg_value	float \| None	None	Explicit background value; None uses automatic detection.
config.fusion.parameters.fusion_relative_bg_threshold	float \| None	0.01	Relative threshold for detecting background pixels.
config.fusion.parameters.fusion_bg_exterior_only	bool	True	Consider only background pixels connected to the exterior.