Image

			Image{N}() <: Block

Block for an N-dimensional image. obs is valid for Image{N}() if it is an N-dimensional array with color or number element type.

Examples

Creating a block:

			
			
			
			

	
			Image
			{
			2
			}
			(
			)
			  
			# 2D-image
			

			
			

	
			Image
			{
			3
			}
			(
			)
			  
			# 3D-image

Example valid images:

			
			
			
			@
			test
			 
			

	
			checkblock
			(
			
			

	
			Image
			{
			2
			}
			(
			)
			,
			 
			
			rand
			(
			RGB
			,
			 
			10
			,
			 
			10
			)
			)
			         
			# Color image
			

			
			@
			test
			 
			

	
			checkblock
			(
			
			

	
			Image
			{
			2
			}
			(
			)
			,
			 
			
			rand
			(
			10
			,
			 
			10
			)
			)
			              
			# Numbers treated as grayscale
			

			
			@
			test
			 
			

	
			checkblock
			(
			
			

	
			Image
			{
			3
			}
			(
			)
			,
			 
			
			rand
			(
			
			Gray
			{
			N0f8
			}
			,
			 
			10
			,
			 
			10
			,
			 
			10
			)
			)
			  
			# Grayscale 3D-image

The color channels (if any) are not counted as a dimension and represented through color types like RGB{N0f8}:

			
			
			
			@
			test
			 
			
			!
			

	
			checkblock
			(
			

	
			Image
			{
			2
			}
			,
			 
			
			rand
			(
			10
			,
			 
			10
			,
			 
			3
			)
			)
			  
			# Not a 2D image

You can create a random observation using mockblock:

			
			
			
			using
			
			 

	
			FastAI
			,
			
			 
			FastVision
			

			
			

	
			FastAI
			.
			

	
			mockblock
			(
			
			

	
			Image
			{
			2
			}
			(
			)
			)

To visualize a 2D-image observation, use showblock. This is supported for both the ShowText and the ShowMakie backend.

			
			
			

	
			showblock
			(
			
			

	
			Image
			{
			2
			}
			(
			)
			,
			 
			
			rand
			(
			
			RGB
			{
			N0f8
			}
			,
			 
			10
			,
			 
			10
			)
			)