Can you let us know, where exactly you want to show that image in the generated app.(app Tab or Info Tap etc.)
Q ) Do I just download a jpg to the workspace convert extract the RGB channels and then use attach it to the video display block for android? How do I bring the image into the model?
A) Check this example
In this example, task 1 shows how to read from image and extracts R, G, B. Instead of using color detection sub system, directly connect to Video display block. This will show the image on the app screen.
RGB_image = imread('peppers.png') Execute the above command in MATLAB before building the model or add the command in Simulink model :
File -> Model Porperties -> Callbacks ->InitFcn
In constant block, use RGB_image(:,:,1)' to get red, RGB_image(:,:,2)' to get green, RGB_image(:,:,3)' to get blue