Extract RGB value to decode
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I'm trying to create a 2D Colour Barcode steganography which decodes a barcode into its corresponding text. On clicking the "Decode" button, the image must be decoded into its textual form.
I have given red, green, yellow and blue colours for letters A, B, C, D respectively. I want to decode this image by making use of RGB pixel values which will decide what's the letter.
The expected output for above image is ADBCD. Please help me!
[File_Name, Path_Name] = uigetfile('D:\'); %upload image by clicking on "Upload" button
imshow([Path_Name,File_Name]) %display image on axes in GUI window