CarveMix

 CarveMix (holes_num:int=1, modifier:RegionModifier=None,
           ROI_class:int=-1, ROI_area:int=25, delta_ratio:float=None,
           random_position:bool=False, p:float=0.5)

Defines the amount of holes, the technique used to make them and the probability of apply the technique.

	Type	Default	Details
holes_num	int	1	The amount of holes to make.
modifier	RegionModifier	None	The modifier that defines the traditional augments to apply to the selected regions.
ROI_class	int	-1	The class to be used to select the ROI.
ROI_area	int	25	The minimum area to be selected as a ROI.
delta_ratio	float	None	The ratio of pixels of the ROI that are going to be used. A ratio of 1 takes all the ROI pixels, a ratio < 1 crops the ROI and a ratio > 1 adds more pixels to the ROI. A None ratio takes a random value [0.9, 1.1) in each usage.
random_position	bool	False	Whether the ROI should be added randomly in the image or in the same position it was extracted.
p	float	0.5	The probability of applying this technique.

The CarveMix technique is a derivation of the CutMixRandom technique with a HoleMakerRandom technique.

However, CarveMix behavior can not be achieved using there techniques together, because of the implementation of the CutMixRandom technique, which takes a hole from the image that is been seen by the model instead of another image of the batch. CarveMix needs to take another image of the batch to properly work.

This technique was defined and implemented here.

This technique has been generalized to be implemented in this library, in order to be usefull in multiple class segmentation too.

source

CarveMix.before_batch

 CarveMix.before_batch ()

Applies the CutMix technique.