【正文】 摘要 數(shù)字圖像處理是一門新興技術，隨著計算機硬件的發(fā)展，其處理能力的不斷增強，數(shù)字圖像的實時處理已經(jīng)成為可能。由于數(shù)字圖像處理的各種算法的出現(xiàn)，圖像處理學科在飛速發(fā)展的同時逐漸向其他學科交叉滲透。數(shù)字圖像處理是一種通過計算機采用一定的算法對圖形圖像進行處理的技術。這種處理技術已經(jīng)在各個領域上都有了比較廣泛的應用。 MATLAB 是一種優(yōu)秀的數(shù)學工具，具有強大的運算功能和圖形展示功能，使圖像處理變得更加的簡單和直觀。本文介紹了 MATLAB 語言的特點，包括 MATLAB 軟件的簡介和基本使用方法說明。介紹了基于 MATLAB 圖像處理的實現(xiàn)和仿真，包含圖像的編輯、圖像的變形、噪聲與濾波以及頻譜分析等。 關鍵詞 : MATLAB。數(shù)字圖像處理 Abstract Digital image processing is an emerging technology, with the development of puter hardware and the processing capacity, realtime digital image processing has bee possible. Due to digital image processing algorithms to appear, with the rapid development of the subject of image processing, it has also gradually permeated to other subjects. Digital image processing is used by some algorithms puter graphics image processing technology, and it has been in many areas have a wide range of applications. MATLAB is an excellent math tool, and it has powerful puting and graphics display capabilities. So it makes images processing bee more simple and intuitive. This paper introduces characteristics of MATLAB Image Processing Toolbox for its digital image processing, including the introduction of MATLAB and its usage. The paper also introduces the simulation and analysis of image processing based on MATLAB, including the level of gray , brightness, scaling, rotating, noise, filtering, and frequency analysis. Key words: MATLAB 。Digital image processing 目 錄 一 緒論 ................................................................................................................. 1 （一）數(shù)字圖像處理概述 ...................................................................................................... 1 （二）數(shù)字圖像處理目的 ...................................................................................................... 1 （三） MATLAB 軟件基本知識介紹 ..................................................................................... 2 二 基于 MATLAB 數(shù)字圖像處理的實現(xiàn)和仿真 ................................................. 3 （一）使用 MATLAB 實現(xiàn)對圖像的基本運算 .................................................................... 3 圖像縮放 ................................................................................................................. 3 圖像裁剪 ................................................................................................................. 5 圖像灰度調節(jié) ......................................................................................................... 6 （二）使用 MATLAB 對圖像進行旋轉變形 ........................................................................ 7 （三）噪聲 .............................................................................................................................. 9 （四）均值濾波 .................................................................................................................... 11 （五）頻譜分析 .................................................................................................................... 12 三 總結與展望 .................................................................................................... 14 參考文獻 ............................................................................................................. 15 致 謝 ................................................................................................................. 16 文獻翻譯 ............................................................................................................. 17 （一） 英文原文 .................................................................................................................... 17 （二）中文翻譯 .................................................................................................................... 20 一、 緒論 （一） 數(shù)字圖像處理概述 圖像是一種重要的信息源，圖像處理的最終目的就是要幫助人類理解信息的內涵。數(shù)字圖像處理是將圖像信號轉化為數(shù)字信號并通過計算機記性去除噪聲、增強、復原、分割、提取特征等處理的過程。影像數(shù)字圖像處理的產(chǎn)生和飛速發(fā)展的因素主要有三個：一是計算機的發(fā)展；而是數(shù)學的發(fā)展（特別是離散數(shù)學理論的創(chuàng)立和完善）；三是廣泛的農(nóng)牧業(yè)、林業(yè)、環(huán)境、軍事、工業(yè)和醫(yī)學等方面的應用需求的增長。隨著計算機技術的迅猛發(fā)展，圖像處理技術已經(jīng)廣泛應用關于各個領域。 本文所涉及 到的圖像處理都是數(shù)字圖像的處理，與模擬圖像相比，數(shù)字圖像具