一、简介
现在商业行为中，在水果出厂前都需要进行质量检测，需要将不同等级的水果进行分级包装，以保证商业利益最大化。可是传统方法都是依靠人工进行检测，效率低下，主观成分大，并不能很好客观地评价出货质量，导致工厂损失利益，增加客户投诉，从而造成品牌效率损失，造成隐形的损失。
该课题为基于MATLAB的水果分级系统。适用圆形水果，如苹果，橘子，柚子，柿子等，统计水果图片的面积，圆形度和色泽等多参数进行评价。该设计带一个GUI界面，通过设置直径和色泽，测试水果的这些参数，从而得出该水果所属等级。
二、源代码
function varargout = orangetest(varargin)
% ORANGETEST MATLAB code for orangetest.fig
% ORANGETEST, by itself, creates a new ORANGETEST or raises the existing
% singleton*.
%
% H = ORANGETEST returns the handle to a new ORANGETEST or the handle to
% the existing singleton*.
%
% ORANGETEST('CALLBACK',hObject,eventData,handles,...) calls the local
% function named CALLBACK in ORANGETEST.M with the given input arguments.
%
% ORANGETEST('Property','Value',...) creates a new ORANGETEST or raises the
% existing singleton*. Starting from the left, property value pairs are
% applied to the GUI before orangetest_OpeningFcn gets called. An
% unrecognized property name or invalid value makes property application
% stop. All inputs are passed to orangetest_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 orangetest
% Last Modified by GUIDE v2.5 09-Apr-2021 12:28:30
% Begin initialization code - DO NOT EDIT
gui_Singleton = 1;
gui_State = struct('gui_Name', mfilename, ...
'gui_Singleton', gui_Singleton, ...
'gui_OpeningFcn', @orangetest_OpeningFcn, ...
'gui_OutputFcn', @orangetest_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 orangetest is made visible.
function orangetest_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 orangetest (see VARARGIN)
% Choose default command line output for orangetest
handles.output = hObject;
% Update handles structure
guidata(hObject, handles);
% UIWAIT makes orangetest wait for user response (see UIRESUME)
% uiwait(handles.figure1);
% --- Outputs from this function are returned to the command line.
function varargout = orangetest_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;
% --- Executes on button press in pushbutton1.
function pushbutton1_Callback(hObject, eventdata, 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({'*.*';'*.bmp';'*.jpg';'*.tif';'*.jpg'},'选择图像');
image=[pathname,filename];%合成路径+文件名
im=imread(image);%读取图像
im=im2double(im);
axes(handles.axes1);
imshow(im);%在坐标axes1显示原图像
title('原始图像');
handles.X1=im;
guidata(hObject,handles);
% --- Executes on selection change in popupmenu1.
function popupmenu1_Callback(hObject, eventdata, handles)
% hObject handle to popupmenu1 (see GCBO)
% eventdata reserved - to be defined in a future version of MATLAB
% handles structure with handles and user data (see GUIDATA)
% Hints: contents = cellstr(get(hObject,'String')) returns popupmenu1 contents as cell array
% contents{get(hObject,'Value')} returns selected item from popupmenu1
Val=get(hObject,'Value')
strl=get(hObject,'string')
switch strl{Val};
case ' 面积'
x1=handles.X1;
w=rgb2gray(x1);
L=medfilt2(w);
level=graythresh(L);
bw=im2bw(L,level);
bw=imfill(~bw,'holes');
axes(handles.axes2);
imshow(bw);
title('面积图像');
strNC=[num2str(bwarea(bw))];
set(handles.text9,'string',strNC);
strNC1=('一级果');
strNC2=('二级果');
strNC3=('三级果');
if bwarea(bw)>30000
set(handles.text14,'string',strNC1);
else if bwarea(bw)>1000&&bwarea(bw)<30000
set(handles.text14,'string',strNC2);
else
set(handles.text14 ,'string',strNC3);
end
end
% strNC1=('无');
% set(handles.text14,'string',strNC1);
case' 颜色'
x1=handles.X1;
hv=rgb2hsv(x1);
H=hv(:,:,1);
S=hv(:,:,2);
V=hv(:,:,3);
axes(handles.axes3);
imshow(H)
title('H分量图像');
level=graythresh(x1);
apple=im2bw(x1,level);
count=length(x1);
for i=1:count
red_ratio=length(find((H>1/24 & H<3/24) | H>21/24 & H<23/24))/length(find(apple==1));%%%%
end
r=red_ratio;
strNC=[num2str(red_ratio*100),'%'];
set(handles.text10,'string',strNC);
strNC1=('三级果');
strNC2=('二级果');
strNC3=('一级果');
if r>1
set(handles.text15,'string',strNC1);
else if r>0.8&&r<1
set(handles.text15,'string',strNC2);
else
set(handles.text15 ,'string',strNC3);
end
end
case' 圆形度'
x1=handles.X1;
I2=rgb2gray(x1);
J=im2bw(I2,0.75);
I=~J;
三、运行结果
四、备注
版本：2014a
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