How can I insert live video of raspberry pi camera into a MATLAB GUI using Image Acquisition Toolbox ?

I am making a Graphical User Interface, and I would like to insert live video from my raspberry pi camera which is connected to the raspberry pi 3 into an axis in my GUI using Image Acquisition Toolbox. Essentially, I would like to have the functionality of the PREVIEW function within my GUI.I had already installed the all necessary packages of hardware require for it .

Answer 1

[Walter Roberson]

See https://www.mathworks.com/help/supportpkg/raspberrypiio/ug/get-video-from-the-raspberry-pi-camera-board.html

Live video is done by repeatedly doing snapshot() and displaying the image.

[Vikesh Kumavat]

thank you sir for help,sir i can connect pi camera to raspberry pi directly but i want to connect the same by using matlab .

[Walter Roberson]

You cannot use the image acquisition toolbox for this purpose, except possibly by writing a custom adapter. You need to use snapshot to get video from the raspberry pi camera into MATLAB.

[Vikesh Kumavat]

I want to share pi camera video screen in axes of gui so that i can view that only by running simple m code file with single click and the camera start and stop by pushbutton added in gui of matlab. is it possible to do so ?if yes then how ?please guide me for it sir.

[Walter Roberson]

Use something like GUIDE to create a layout. Use a uicontrol style toggle . Have the Callback connect to the raspberry and use cameraboard() and then loop,

while handles.togglebutton.value == 1
  img = snapshot(mycam);
  imagesc(img, 'Parent', handles.axes1)
  drawnow();
end

[Vikesh Kumavat]

Yes i am using Guide for creating a layout .I had created the layout but how to compile this with picamera which is connected to raspberry pi .I am attaching the .m code and .fig matlab file . How should i proceed now? What are the changes needed in code for Compiling ?

[Walter Roberson]

Look at the lines

% UIWAIT makes raspberry_camera_gui wait for user response (see UIRESUME)
% uiwait(handles.figure1);

You have to remove the % on that second line for compiling.

You will probably also want to put in code that actually does something.

[Vikesh Kumavat]

Where should i have to make changes in code to share screen in axes and operate the camera through pushbutton through gui layout. Please go through previous .m code file and help me in coding

[Walter Roberson]

Change pushbutton1 from being a uicontrol pushbutton into a togglebutton. That will result in a

function togglebutton1_Callback(hObject, eventdata, handles)

In that routine, connect to the raspberry and use cameraboard() and then loop,

while hObject.value == 1
  img = snapshot(mycam);
  imagesc(img, 'Parent', handles.axes1)
  drawnow();
end

[Vikesh Kumavat]

Sir i had replaced the pushbutton by toggle button but i unable to proceed yet please make changes in that .m code file and send it ,so that my doubt will clear .

[Walter Roberson]

Here.

[Vikesh Kumavat]

Thanks sir for providing me the code but when i run it shows following error .I think the calling of toggle button might we wrong...How should i proceed now?

>> raspberry_camera_gui Undefined function or variable 'SOMETHING'.

Error in raspberry_camera_gui>togglebutton1_Callback (line 81) mycam = cameraboard(SOMETHING);

Error in gui_mainfcn (line 95) feval(varargin{:});

Error in raspberry_camera_gui (line 42) gui_mainfcn(gui_State, varargin{:});

Error in matlab.graphics.internal.figfile.FigFile/read>@(hObject,eventdata)raspberry_camera_gui('togglebutton1_Callback',hObject,eventdata,guidata(hObject)) Error while evaluating UIControl Callback.

>>

[Vikesh Kumavat]

Just press the record video button of gui you will get idea what is the error

[Walter Roberson]

I posted the link to the information you need, and I told you which routines you need to call. You need to do some of the work yourself.