"MATLAB GUI for Color Image vs Grayscale Image Detection"

Here is a MATLAB code for creating a GUI that differentiates between a color image and a grayscale image:

function varargout = gui_example(varargin)

% GUI_EXAMPLE MATLAB code for gui_example.fig % GUI_EXAMPLE, by itself, creates a new GUI_EXAMPLE or raises the existing % singleton*. % % H = GUI_EXAMPLE returns the handle to a new GUI_EXAMPLE or the handle to % the existing singleton*. % % GUI_EXAMPLE('CALLBACK',hObject,eventData,handles,...) calls the local % function named CALLBACK in GUI_EXAMPLE.M with the given input arguments. % % GUI_EXAMPLE('Property','Value',...) creates a new GUI_EXAMPLE or raises the % existing singleton*. Starting from the left, property value pairs are % applied to the GUI before gui_example_OpeningFcn gets called. An % unrecognized property name or invalid value makes property application % stop. All inputs are passed to gui_example_OpeningFcn via varargin. % % *See GUI Options on GUIDE's Tools menu. Choose "GUI allows only one % instance to run (singleton)". % % See also: GUIDE, GUIDATA, GUIHANDLES % Edit the above text to modify the response to help gui_example % Last Modified by GUIDE v2.5 30-Jan-2023 11:30:50 % Begin initialization code - DO NOT EDIT gui_Singleton = 1; gui_State = struct('gui_Name', mfilename, ... 'gui_Singleton', gui_Singleton, ... 'gui_OpeningFcn', @gui_example_OpeningFcn, ... 'gui_OutputFcn', @gui_example_OutputFcn, ... 'gui_LayoutFcn', [] , ... 'gui_Callback', []); if nargin && ischar(varargin{1}) gui_State.gui_Callback = str2func(varargin{1}); end if nargout [varargout{1:nargout}] = gui_mainfcn(gui_State, varargin{:}); else gui_mainfcn(gui_State, varargin{:}); end % End initialization code - DO NOT EDIT % --- Executes just before gui_example is made visible. function gui_example_OpeningFcn(hObject, eventdata, handles, varargin) % This function has no output args, see OutputFcn. % hObject handle to figure % eventdata reserved - to be defined in a future version of MATLAB % handles structure with handles and user data (see GUIDATA) % varargin command line arguments to gui_example (see VARARGIN) % Choose default command line output for gui_example handles.output = hObject; % Update handles structure guidata(hObject, handles); % UIWAIT makes gui_example wait for user response (see UIRESUME) % uiwait(handles.figure1);

% --- Outputs from this function are returned to the command line. function varargout = Color_vs_Greyscale_OutputFcn(hObject, eventdata, handles) % varargout cell array for returning output args (see VARARGOUT); % hObject handle to figure % eventdata reserved - to be defined in a future version of MATLAB % handles structure with handles and user data (see GUIDATA) % Get default command line output from handles structure varargout{1} = handles.output;

This code is the output function for the GUI. The varargout cell array is used to return output arguments from the function. The first output argument is stored in varargout{1}, which is the default output from the handles structure. The output argument is stored in the output field of the handles structure, which is set in the pushbutton1_Callback function.

The code is a function named Color_vs_Greyscale_OutputFcn in MATLAB, which is the output function for the GUI created in the program.

The function takes three inputs:

• hObject: handle to the figure
• eventdata: reserved for future use in MATLAB
• handles: a structure containing the handles to the components and user data in the GUI.

The function returns one output argument, stored in the varargout cell array. The output is set to handles.output, which is the default output from the handles structure.

The purpose of the output function is to retrieve the output from the handles structure and return it as the function output. The output from the function can then be used by other functions in the program.

In this particular case, the output from the function is not used, so the output function is simply returning the default output from the handles structure.