MATLAB: ERROR : The function ‘pushbutton1_Callback’ might be unused . AND any more

LINE 98 : The function 'pushbutton1_Callback' might be unused

LINE 114 : The function 'pushbutton2_Callback' might be unused

LINE 190 : The variable 'bbox' appears to change size on every loop iteration. Consider preallocation for speed

LINE 215 : The function 'pushbutton3_Callback' might be unused

function varargout = projek1(varargin)
% PROJEK1 MATLAB code for projek1.fig
%      PROJEK1, by itself, creates a new PROJEK1 or raises the existing
%      singleton*.
%




%      H = PROJEK1 returns the handle to a new PROJEK1 or the handle to
%      the existing singleton*.
%
%      PROJEK1('CALLBACK',hObject,eventData,handles,...) calls the local
%      function named CALLBACK in PROJEK1.M with the given input arguments.
%
%      PROJEK1('Property','Value',...) creates a new PROJEK1 or raises the
%      existing singleton*.  Starting from the left, property value pairs are
%      applied to the GUI before projek1_OpeningFcn gets called.  An
%      unrecognized property name or invalid value makes property application
%      stop.  All inputs are passed to projek1_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 projek1
% Last Modified by GUIDE v2.5 26-Mar-2020 14:25:50
% Begin initialization code - DO NOT EDIT
gui_Singleton = 1;
gui_State = struct('gui_Name',       mfilename, ...
                   'gui_Singleton',  gui_Singleton, ...
                   'gui_OpeningFcn', @projek1_OpeningFcn, ...
                   'gui_OutputFcn',  @projek1_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 projek1 is made visible.
function projek1_OpeningFcn(hObject, ~, 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 projek1 (see VARARGIN)
% Choose default command line output for projek1
handles.output = hObject;
% Update handles structure
guidata(hObject, handles);
movegui(hObject, 'center');
clc
clear
% UIWAIT makes projek1 wait for user response (see UIRESUME)
% uiwait(handles.figure1);
% --- Outputs from this function are returned to the command line.
function varargout = projek1_OutputFcn(~, ~, 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;
reqToolboxes = {'Computer Vision System Toolbox', 'image Processing Toolbox'};
info = ver;
s=size(info);
 
flg = zeros(size(reqToolboxes));
reqSize = size(reqToolboxes,2);
 
for i=1:s(2)
    for j=1:reqSize
        if( strcmpi(info(1,i).Name,reqToolboxes{1,j}) )
            flg(1,j)=1;
        end
    end
end
ret = prod(flg);
 
if ~ret
    error('detectFaceParts requires: Computer Vision System Toolbox and Image Processing Toolbox. Please install these toolboxes.');
end
% --- Executes on button press in pushbutton1.
LINE 98 :     function pushbutton1_Callback(hObject, ~, handles)
% hObject    handle to pushbutton1 (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)
[filename,pathname]=uigetfile('*.*');
if ~isequal(filename,0)
    handles.data1 = imread(fullfile(pathname,filename));
    guidata(hObject,handles);
    axes(handles.axes1)
    cla reset
    imshow(handles.data1);
else
    return
end
% --- Executes on button press in pushbutton2.
LINE 114 :     function pushbutton2_Callback(~, ~, handles)
% hObject    handle to pushbutton2 (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)
tic
X = handles.data1;
thresholdFace = 1;
thresholdParts = 1;
stdsize = 176;
 
nameDetector = {'LeftEye'; 'RightEye'; 'Mouth'; 'Nose'; };
mins = [[12 18]; [12 18]; [15 25]; [15 18]; ];
 
detector.stdsize = stdsize;
detector.detector = cell(5,1);
for k=1:4
    minSize = int32([stdsize/5 stdsize/5]);
    minSize = [max(minSize(1),mins(k,1)), max(minSize(2),mins(k,2))];
    detector.detector{k} = vision.CascadeObjectDetector(char(nameDetector(k)), 'MergeThreshold', thresholdParts, 'MinSize', minSize);
end
 
detector.detector{5} = vision.CascadeObjectDetector('FrontalFaceCART', 'MergeThreshold', thresholdFace);
 
%%%%%%%%%%%%%%%%%%%%%%% detect face %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% Detect faces
bbox = step(detector.detector{5}, X);
 
bbsize = size(bbox);
partsNum = zeros(size(bbox,1),1);
 
%%%%%%%%%%%%%%%%%%%%%%% detect parts %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
stdsize = detector.stdsize;
 
for k=1:4
    if( k == 1 )
        region = [1,int32(stdsize*2/3); 1, int32(stdsize*2/3)];
    elseif( k == 2 )
        region = [int32(stdsize/3),stdsize; 1, int32(stdsize*2/3)];
    elseif( k == 3 )
        region = [1,stdsize; int32(stdsize/3), stdsize];
    elseif( k == 4 )
        region = [int32(stdsize/5),int32(stdsize*4/5); int32(stdsize/3),stdsize];
    else
        region = [1,stdsize;1,stdsize];
    end
     
    bb = zeros(bbsize);
    for i=1:size(bbox,1)
        XX = X(bbox(i,2):bbox(i,2)+bbox(i,4)-1,bbox(i,1):bbox(i,1)+bbox(i,3)-1,:);
        XX = imresize(XX,[stdsize, stdsize]);
        XX = XX(region(2,1):region(2,2),region(1,1):region(1,2),:);
         
        b = step(detector.detector{k},XX);
         
        if( size(b,1) > 0 )
            partsNum(i) = partsNum(i) + 1;
             
            if( k == 1 )
                b = sortrows(b,1);
            elseif( k == 2 )
                b = flipud(sortrows(b,1));
            elseif( k == 3 )
                b = flipud(sortrows(b,2));
            elseif( k == 4 )
                b = flipud(sortrows(b,3));
            end
             
            ratio = double(bbox(i,3)) / double(stdsize);
            b(1,1) = int32( ( b(1,1)-1 + region(1,1)-1 ) * ratio + 0.5 ) + bbox(i,1);
            b(1,2) = int32( ( b(1,2)-1 + region(2,1)-1 ) * ratio + 0.5 ) + bbox(i,2);
            b(1,3) = int32( b(1,3) * ratio + 0.5 );
            b(1,4) = int32( b(1,4) * ratio + 0.5 );
             
            bb(i,:) = b(1,:);
        end
    end
LINE 190 :         bbox = [bbox,bb];
end
 
 
%%%%%%%%%%%%%%%%%%%%%%% draw faces %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
bbox = [bbox,partsNum];
bbox(partsNum<=2,:)=[];
 
face =  bbox(:,1: 4);
axes(handles.axes2)
cla reset
imshow(X);
hold on
 
[m, ~] = size(face);
for j = 1:m
    rectangle('Position',[face(j,1),face(j,2),face(j,3),face(j,4)],'EdgeColor','y','LineWidth',2);
end
hold off
toc
% for k = 1:m
%     imcrop(X,[face(k,1),face(k,2),face(k,3),face(k,4)]);
% end
% --- Executes on button press in pushbutton3.
LINE 215 :     function pushbutton3_Callback(~, ~, ~)
% hObject    handle to pushbutton3 (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)
img = getframe(gca);
[filename2,pathname2] = uiputfile(...
    {'*.bmp','bitmap image (*.bmp)';
    '*.jpg','jpeg image(*.bmp)';
    '*.*','All file(*.*)'},...
    'Save Image');
if ~isequal(filename2,0)
    imwrite(img.cdata,fullfile(pathname2,filename2));
else
    return
end

Best Answer

These are not errors, they are warnings given by mlint.

Because the reference to these functions is hidden away in the .fig file, mlint can't see if those functions are called anywhere. It warns you about this, because you might have a typo somewhere, or because maybe you can remove the unnecessary function from your file.

In this case all issues are due to the way GUIDE works. You don't need to remove those functions. If you want to learn about better GUI design, have a look here.

Best Answer

Related Solutions

MATLAB: Error using handle.handle/set Invalid or deleted object.

MATLAB: To crop the detected face parts

Related Question