Image reading and processing

Usha Silwal

2019 9 11

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How do I generate just the red channel, from the colourful image that I have attached below?

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Usha Silwal 2019-9-11

This is the image I am working on and I just need to display the blue channel of the image.

Jon 2019-9-12

How is the image encoded? Please provide the matrix you are plotting

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Sourav Bairagya 2019-9-16

在 MATLAB Online 中打开

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After reading the image properly, you can separate the channels using this code segment.

a=imread('test.jpg');
 
a_red=a(:,:,1);       %RED channel
a_green=a(:,:,2);     %GREEN channel
a_blue=a(:,:,3);      %BLUE channel
 
figure;imshow(a);title('Color Image');
figure;imshow(a_red);title('Red Channel');
figure;imshow(a_green);title('Green Channel');
figure;imshow(a_blue);title('Blue Channel');