【图像处理基础】 GUI图像局部放大【含Matlab源码 1016期】.zip

function varargout = piczoom(varargin) gui_Singleton = 1; gui_State = struct('gui_Name', mfilename, ... 'gui_Singleton', gui_Singleton, ... 'gui_OpeningFcn', @piczoom_OpeningFcn, ... 'gui_OutputFcn', @piczoom_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 function piczoom_OpeningFcn(hObject, eventdata, handles, varargin) handles.output = hObject; %m为图片的纵向像素数，n为图片的横向像素数，mapData为修正后的图像数据 global m n mapData %读取图片到主坐标轴axes1 axes(handles.axes1); cData = imread('pic1.jpg'); hImage = image(cData); axis off; %设置当前坐标轴为右上角的小坐标轴axes2 axes(handles.axes2); %初始化全局变量m和n m = size(cData, 1); n = size(cData, 2); %扩展图片数据，使得鼠标在图片边缘附近时，不至于出错 mapData = 255 * ones(m+40, n+40, size(cData, 3), 'uint8'); mapData(21:m+20, 21:n+20, :) = cData; %将图片数据存到handles结构体中 handles.hImage = hImage; %更新handles guidata(hObject, handles); function varargout = piczoom_OutputFcn(hObject, eventdata, handles) varargout{1} = handles.output; function figure1_WindowButtonMotionFcn(hObject, eventdata, handles) global m n mapData %获取鼠标当前所在的点 pos = get(handles.axes1, 'CurrentPoint'); posX = pos(1, 1); posY = pos(1, 2); %若鼠标在坐标轴区域内，更新小坐标轴axes2 if((posX >= 1) && (posX <= n) &&... (posY >= 1) && (posY <= m)) x = floor(posY) + 20; y = floor(posX) + 20; cData = mapData(x-20: x+20, y-20:y+20, :); axes(handles.axes2); image(cData); axis off; end