Matlab基于GUI界面的图像处理双线性插值最邻近插值

function varargout = GeZhongChaZhi(varargin) % GEZHONGCHAZHI MATLAB code for GeZhongChaZhi.fig % GEZHONGCHAZHI, by itself, creates a new GEZHONGCHAZHI or raises the existing % singleton*. % % H = GEZHONGCHAZHI returns the handle to a new GEZHONGCHAZHI or the handle to % the existing singleton*. % % GEZHONGCHAZHI('CALLBACK',hObject,eventData,handles,...) calls the local % function named CALLBACK in GEZHONGCHAZHI.M with the given input arguments. % % GEZHONGCHAZHI('Property','Value',...) creates a new GEZHONGCHAZHI or raises the % existing singleton*. Starting from the left, property value pairs are % applied to the GUI before GeZhongChaZhi_OpeningFcn gets called. An % unrecognized property name or invalid value makes property application % stop. All inputs are passed to GeZhongChaZhi_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 GeZhongChaZhi % Last Modified by GUIDE v2.5 16-Jul-2022 17:48:16 % Begin initialization code - DO NOT EDIT gui_Singleton = 1; gui_State = struct('gui_Name', mfilename, ... 'gui_Singleton', gui_Singleton, ... 'gui_OpeningFcn', @GeZhongChaZhi_OpeningFcn, ... 'gui_OutputFcn', @GeZhongChaZhi_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 GeZhongChaZhi is made visible. function GeZhongChaZhi_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 GeZhongChaZhi (see VARARGIN) % Choose default command line output for GeZhongChaZhi handles.output = hObject; % Update handles structure guidata(hObject, handles); % UIWAIT makes GeZhongChaZhi wait for user response (see UIRESUME) % uiwait(handles.figure1); % --- Outputs from this function are returned to the command line. function varargout = GeZhongChaZhi_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) global FileName [FileName,pathname]=uigetfile({'*.bmp;*.jpg;*.png;*.jpeg;*.tif'},'选择一个图片','D:\dzy:\qwh'); %获取图片地址 str=[pathname FileName]; %存储文件地址 global I if isequal(FileName,0)||isequal(pathname,0) %少部分即提示 warndlg('Please select a picture first!','Warning'); return; else I= imread(str); %读取原始图片 axes(handles.axes1); %在axes1中显示 imshow(I); end; % --- Executes on button press in pushbutton2. function pushbutton2_Callback(hObject, eventdata, 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) global I a1 a1=str2num(get(handles.edit1,'string')); [srcWidth ,srcHeight,Color]=size(I); % % % 最近邻 % % 思想是根据 srcWidth/dstWidth = srcX/dstY，最后再对srcX取整 % % 缺点是精度不够，严重失真 % %dstWidth=srcWidth+CONST*2;%放大加，缩小减 %dstHeight=srcHeight+CONST*2; %dstWidth=srcWidth-CONST*2; %dstHeight=srcHeight-CONST*2; dstWidth=floor(srcWidth*a1); dstHeight=floor(srcHeight*a1); resize_img=zeros(dstWidth,dstHeight,Color,class(I)); % 像素变化公式计算公式 for i=1:dstWidth for j=1:dstHeight for n = 1:Color src_i=i*(srcWidth/dstWidth); src_j=j*(srcHeight/dstHeight); resize_img(i,j,n)=I(ceil(src_i),ceil(src_j),n); % round四舍五入 end end end axes(handles.axes2); %在axes1中显示 imshow(resize_img) title("最近邻插值法放大图像"); % --- Executes on button press in pushbutton3. function pushbutton3_Callback(hObject, eventdata, handles) % 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) global I a1 [srcWidth ,srcHeight,Color]=size(I); % % % 最近邻 % % 思想是根据 srcWidth/dstWidth = srcX/dstY，最后再对srcX取整 % % 缺点是精度不够，严重失真 % %dstWidth=srcWidth+CONST*2;%放大加，缩小减 %dstHeight=srcHeight+CONST*2; %dstWidth=srcWidth-CONST*2; %dstHeight=srcHeight-CONST*2; dstWidth=floor(srcWidth/a1); dstHeight=floor(srcHeight/a1); resize_img=zeros(dstWidth,dstHeight,Color,class(I)); % 像素变化公式计算公式 for i=1:dstWidth for j=1:dstHeight for n = 1:Color src_i=i*(srcWidth/dstWidth); src_j=j*(srcHeight/dstHeight); resize_img(i,j,n)=I(ceil(src_i),ceil(src_j),n); % round四舍五入 end end end axes(handles.axes2); %在axes1中显示 imshow(resize_img) title("最近邻插值法缩放图像"); % --- Executes on button press in pushbutton4. function pushbutton4_Callback(hObject, eventdata, handles) % hObject handle to pushbutton4 (see GCBO) % eventdata reserved - to be defined in a future version of MATLAB % handles structure with handles and user data (see GUIDATA) global I a2 a2=str2num(get(handles.edit2,'string')); [srcWidth ,srcHeight,Color]=size(I); dstWidth=floor(srcWidth*a2); dstHeight=floor(srcHeight*a2); resize_img=zeros(dstWidth,dstHeight,Color,class(I)); % 像素变化公式计算公式 for i=1:dstWidth-1 for j=1:dstHeight-1 for n = 1:Color src_i=i*(srcWidth/dstWidth); src_j=j*(srcHeight/dstHeight); src_ii=fix(src_i); src_iu=src_i - src_ii; % none fix part src_jj=fix(src_j); src_jv=src_j - src_jj; if src_ii == 0 src_ii=src_ii+1; end if src_jj ==0 src_jj=src_jj+1; end resize_img(i,j,n)=(1-src_iu)*(1-src_jv)*I(src_ii,src_jj,n)+(1-src_iu)*src_jv*I(src_ii,src_jj+1,n)+src_iu*(1-src_jv)*I(src_ii+1,src_jj,n)... +src_iu*src_jv*I(src_ii+1,src_jj+1,n); end end end axes(handles.axes3); %在axes1中显示 imshow(resize_img) %title("双线性插值法放大图像"); title("双线性插值法放大图像"); % --- Executes on button press in pushbutton5. function pushbutton5_Callback(hObject, eventdata, handles) % hObject handle to pushbutton5 (see GCBO) % eventdata reserved - to be defined in a future version of MATLAB % handles structure with handles and user data (see GUIDATA) % --- Executes on button press in pushbutton6. function pushbutton6_Callback(hObject, eventdata, handles) % hObject handle to pushbutton6 (see GCBO) % eventdata reserved - to be defined in a future version of MATLAB % handles structure with handles and user data (see GUIDATA) global I a2 a2=str2num(get(handles.edit2,'string')); [srcWidth ,srcHeight,Color]=size(I); dstWidth=floor(srcWidth/a2); dstHeight=floor(srcHeight/a2); resize_img=zeros(dstWidth,dstHeight,Color,class(I)); % 像素变化公式计算公式 for i=1:dstWidth-1 for j=1:dstHeight-1 for n = 1:Color src_i=i*(srcWidth/dstWidth); src_j=j*(srcH