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【图像压缩】图像无损压缩含Matlab源码

时间:2022-04-08 来源: 浏览:

【图像压缩】图像无损压缩含Matlab源码

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1 简介

介绍了JPEG图像压缩算法,并在MATLAB数学分析工具环境下从实验角度出发,较为直观地探讨了DCT在JPEG图像压缩中的应用.仿真实验表明,用MATLAB来实现离散余弦变换的图像压缩,具有方法简单,速度快,误差小的优点,大大提高了图像压缩的效率和精度.

2 部分代码

function varargout = ImageCompression1(varargin) % IMAGECOMPRESSION1 MATLAB code for ImageCompression1.fig % IMAGECOMPRESSION1, by itself, creates a new IMAGECOMPRESSION1 or raises the existing % singleton*. % % H = IMAGECOMPRESSION1 returns the handle to a new IMAGECOMPRESSION1 or the handle to % the existing singleton*. % % IMAGECOMPRESSION1(’CALLBACK’,hObject,eventData,handles,...) calls the local % function named CALLBACK in IMAGECOMPRESSION1.M with the given input arguments. % % IMAGECOMPRESSION1(’Property’,’Value’,...) creates a new IMAGECOMPRESSION1 or raises the % existing singleton*. Starting from the left, property value pairs are % applied to the GUI before ImageCompression1_OpeningFcn gets called. An % unrecognized property name or invalid value makes property application % stop. All inputs are passed to ImageCompression1_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 ImageCompression1 % Last Modified by GUIDE v2.5 15-Oct-2014 22:20:56 % Begin initialization code - DO NOT EDIT gui_Singleton = 1; gui_State = struct(’gui_Name’, mfilename, ... ’gui_Singleton’, gui_Singleton, ... ’gui_OpeningFcn’, @ImageCompression1_OpeningFcn, ... ’gui_OutputFcn’, @ImageCompression1_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 ImageCompression1 is made visible. function ImageCompression1_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 ImageCompression1 (see VARARGIN) % Choose default command line output for ImageCompression1 handles.output = hObject; % Update handles structure guidata(hObject, handles); guidata(hObject, handles); set(handles.axes1,’visible’,’off’) set(handles.axes2,’visible’,’off’) axis off axis off % UIWAIT makes ImageCompression1 wait for user response (see UIRESUME) % uiwait(handles.figure1); % --- Outputs from this function are returned to the command line. function varargout = ImageCompression1_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)

3 仿真结果

4 参考文献

[1]钱裕禄, 周雪娇. 基于DCT的JPEG图像压缩编码算法的MATLAB实现[J]. 浙江万里学院学报, 2002, 15(1):4.

博主简介:擅长智能优化算法、神经网络预测、信号处理、元胞自动机、图像处理、路径规划、无人机等多种领域的Matlab仿真,相关matlab代码问题可私信交流。

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