【正文】 圖像自適應(yīng)增強算法研究畢業(yè)設(shè)計（論文） 沈陽大學(xué)畢業(yè)設(shè)計（論文） No 0 圖像自適應(yīng)增強算法研究 圖像自適應(yīng)增強算法研究畢業(yè)設(shè)計（論文） 沈陽大學(xué)畢業(yè)設(shè)計（論文） No 1 目 錄 引 言 ............................................................................................................................................. 3 1圖像增強的基本理論 .............................................................................................................. 7 概念 ..................................................................................................... 7 ............................................................................................................... 7 ................................................................................................................................... 7 ................................................................................................................................... 9 ............................................................................................................................... 10 ................................................................................................................. 11 ......................................................................................................... 12 ............................................................................................................. 13 ........................................................................................................................... 14 ......................................................................................................... 14 ................................................................................................................. 16 ....................................................................................................................... 17 1 .5局域直方圖均衡化 .............................................................................................................. 18 2 圖像增強方法的改進 ........................................................................................................... 21 ........................................................................................... 22 ......................................................................................................... 22 ............................................................................................................. 23 ..................................................................................................... 25 ................................................................................................. 25 ....................................................................................... 27 ......................................................................................................................... 28 ............................................................................................. 30 3 幾種增強的實驗結(jié)果 與分析 ............................................................................................. 32 小波增強 ............................................................................................................................... 32 直方圖 均衡化 ....................................................................................................................... 34 ....................................................................................................................................... 37 結(jié) 論 ........................................................................................................................................... 38 致 謝 ........................................................................................................................................... 40 參考文獻 ...................................................................................................................................... 41 圖像自適應(yīng)增強算法研究畢業(yè)設(shè)計（論文） 沈陽大學(xué)畢業(yè)設(shè)計（論文） No 2 附錄 1 ............................................................................................................................................ 44 附錄 2 ............................................................................................................................................ 45 圖像自適應(yīng)增強算法研究畢業(yè)設(shè)計（論文） 沈陽大學(xué)畢業(yè)設(shè)計（論文） No 1 摘 要 在圖像處理中，圖像增強技術(shù)對于提高圖像的質(zhì)量起著其重要作用。它通過有選擇的強調(diào)圖像中的某些信息而抑制另外一些信息，以改善圖像的視覺效果，將原圖像轉(zhuǎn)換成另外一種更加適合于人眼觀察和計算機分析處理的形式。傳統(tǒng)的圖像灰度增強方法通過增大灰度級別的間距來達到增加圖像灰度對比度的目的。當(dāng)圖像所占用的灰度級別個數(shù)非常少時，傳統(tǒng)方法就不能達到預(yù)期的增強效果了。 小波多分辨分析由于它能多尺度多角度提取信號特征，往往可在不同尺度上噪聲和信號明顯地區(qū)分開來，所以它在圖像去噪和增強方面有很大優(yōu) 勢。本文提出的基于小波技術(shù)的梯度增強方法的基礎(chǔ)上，通過增加灰度數(shù)量和增強圖像的灰度對比度，取得了較好的增強效果。針對不同特點的圖像采用相應(yīng)的圖像增強方法可以達到較好的增強效果。實驗結(jié)果表明，本文提出的改進方法對于某些圖像取得了比傳統(tǒng)的增強方法更好的效果。 關(guān)鍵詞 ： 圖像處理；直方圖 ； 圖像增強 ； 直方圖均衡 ；小波變換 圖像自適應(yīng)增強算法研究畢業(yè)設(shè)計（論文） 沈陽大學(xué)畢業(yè)設(shè)計（論文） No 2 Abstract Image enhancement technology plays a very important role to improve image quality in image processing. By enhancing some information and restraining other information selectively it can improve image visual effect observably or puter analysis and processing better. Increasing the intervals of gray levels, enhancing gray contrast is implemented by the traditional gray enhancement algorithms. When the number of gray levels used by an image is very less, anticipated effects are difficultly achieved. Wavelet analysis has predominant advantages in image denoising and image enhancement，due to its extracting multiresolution characters of signal and making the difference between noise and signal very cl