Image Attributes

Output attributes of Simulink image signal

Since R2022b

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Libraries:
Computer Vision Toolbox / Utilities

Description

The Image Attributes block outputs attributes of Simulink image signal as numeric data. Use Image Attributes block to:

Display image attributes for debugging purposes.
Use image attributes in control or data flow of an image processing algorithm.

Examples

Track Marker Using Simulink Images

Track a marker on a whiteboard by using images of the Simulink.ImageType data type.

Open Script

Ports

Input

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Port_1 — Input signal
`Simulink.ImageType`

Input signal to the Image Attributes block. The input is a Simulink image data type.

Data Types: Simulink.ImageType

Output

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rows — Number of rows in image data
scalar

Number of rows in the image data, returned as a positive integer.

Data Types: uint32

columns — Number of columns in image data
scalar

Number of columns in the image data, returned as a positive integer.

Data Types: uint32

channels — Number of color channels or samples for each pixel in array
scalar

Number of color channels or samples for each pixel in the array, returned as 1, 3, or 4. The number of channels correspond to the number of color channels in the color format of the image data. These are the values of Channels for the supported color formats:

Color Format	Channels
`Grayscale`	`1`
`RGB`	`3`
`BGR`	`3`
`BGRA`	`4`

Data Types: uint32

class — Data type of underlying image data
string

Data type of the underlying image data, returned as one of these values:

'uint8'
'int8'
'uint16'
'int16'
'uint32'
'int32'
'single'
'double'
'boolean'

Data Types: string

color — Color format of underlying image data
string

Color format of the underlying image data, returned as 'RGB', 'Grayscale', 'BGR', or 'BGRA'. The color format determines what each color channel of a pixel in the image represents.

Data Types: string

layout — Array layout of image data
string

Memory arrangement of the matrix data in the image, returned as 'ColumnMajor' or 'RowMajor'.

Data Types: string

Block Characteristics

Data Types	`integer` \| `string` \| `image`
Direct Feedthrough	`yes`
Multidimensional Signals	`yes`
Variable-Size Signals	`no`
Zero-Crossing Detection	`no`

Image Attributes

Description