imsplit

Split multichannel image into its individual channels

Syntax

[c1,c2,c3,...,ck] = imsplit(I)

Description

[c1,c2,c3,...,ck] = imsplit(I) returns a set of k images representing the individual channels in the k-channel image I.

Examples

Split RGB Image into Its Component Channels

Read an RGB image into the workspace and display the image.

I = imread('peppers.png');
imshow(I)

Split the image into its component red, green, and blue channels.

[r,g,b] = imsplit(I);

Display the three color channels as a montage. Red peppers have a signal predominantly in the red channel. Yellow and green peppers have a signal in both the red and green channels. White objects, such as the garlic in the foreground, have a strong signal in all three channels.

montage({r,g,b},'Size',[1 3])

Split Image in HSV Colorspace into Its Component Channels

Read an RGB image into the workspace and display the image.

rgbImage = imread('peppers.png');
imshow(rgbImage)

Convert the RGB image to the HSV colorspace by using the rgb2hsv function.

hsvImage = rgb2hsv(rgbImage);

Split the HSV image into its component hue, saturation, and value channels.

[h,s,v] = imsplit(hsvImage);

Display the three channels as a montage.

montage({h,s,v},'Size',[1 3])

Input Arguments

I — Input image

m-by-n-by-k array

Input image, specified as an m-by-n-by-k numeric array.

Data Types: single | double | int8 | int16 | int32 | int64 | uint8 | uint16 | uint32 | uint64 | logical

Output Arguments

c1,c2,c3,...,ck — Output images

numeric matrix for each channel

Output images, returned as k individual numeric matrices, where k is the number of channels in the input image. The output images are the same class as the input image.

Extended Capabilities

C/C++ Code Generation

Generate C and C++ code using MATLAB® Coder™.

imsplit supports the generation of C code (requires MATLAB^® Coder™). For more information, see Code Generation for Image Processing.

Thread-Based Environment

Run code in the background using MATLAB® backgroundPool or accelerate code with Parallel Computing Toolbox™ ThreadPool.

This function fully supports thread-based environments. For more information, see Run MATLAB Functions in Thread-Based Environment.

Version History

Introduced in R2018b

R2021b: Support for thread-based environments

imsplit now supports thread-based environments.