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Displaying Image Data

This example shows how to display an image and convert it to grayscale in MATLAB®.

Read the Image

The sample file named peppers.png contains an RGB image. Read the image into the workspace using the imread function.

RGB = imread('peppers.png');

Display the Color Image

Display the image data using the imshow function.


Convert to Grayscale

Convert the RGB image to grayscale using the rgb2gray function.

gray = rgb2gray(RGB);

Display the Grayscale Image

Display the grayscale image using imshow.


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