`AdjustContrast`

struct defined in module DataAugmentation


			AdjustContrast(factor = 0.2)
AdjustContrast(distribution)

Adjust the contrast of an image by a factor chosen uniformly from f ∈ [1-δ, 1+δ].

Pixels c are transformed c + μ*(1-f) where μ is the mean color of the image.

You can also pass any Distributions.Sampleable from which the factor is selected.

Pixels are clamped to [0,1] unless clamp=false is passed.

Example


			
			
			
			using
			
			 

	
			DataAugmentation
			,
			
			 
			TestImages
			

			

			
			item
			 
			=
			 
			

	
			Image
			(
			
			testimage
			(
			
			"
			lighthouse
			"
			)
			)
			

			
			tfm
			 
			=
			 
			

			AdjustContrast
			(
			0.2
			)
			

			
			titems
			 
			=
			 
			
			[
			
			

	
			apply
			(
			tfm
			,
			 
			item
			)
			 
			for
			
			 
			_
			 
			in
			
			 
			1
			:
			8
			]
			

			

	
			showgrid
			(
			titems
			
			;
			 
			
			ncol
			 
			=
			 
			4
			,
			 
			
			npad
			 
			=
			 
			16
			)

Methods

There are 2 methods for DataAugmentation.AdjustContrast:

colortransforms.jl:95

colortransforms.jl:91

Backlinks

The following pages link back here:

DataAugmentation.jl , colortransforms.jl