【正文】 .........................................................................................................................................II引言 .....................................................................................................................................................................11 緒論 .................................................................................................................................................................2 課題研究背景和意義 ..............................................................................................................................2 國(guó)內(nèi)外研究現(xiàn)狀 ......................................................................................................................................3 本課題研究?jī)?nèi)容 ......................................................................................................................................42 圖像的預(yù)處理 .................................................................................................................................................6 圖像灰度化 ..............................................................................................................................................6 圖像濾波 ..................................................................................................................................................7 圖像濾波技術(shù) ...................................................................................................................................7 高斯濾波 ...........................................................................................................................................7 中值濾波 ...........................................................................................................................................8 二值化閾值選取 ......................................................................................................................................9 直方圖的峰谷法 ...............................................................................................................................9 一維最大熵法 .................................................................................................................................10 Otsu 法 .............................................................................................................................................11 閾值算法的選取 .............................................................................................................................13 數(shù)學(xué)形態(tài)學(xué)操作 ....................................................................................................................................13 腐蝕 .................................................................................................................................................13 膨脹 .................................................................................................................................................14 開操作 .............................................................................................................................................15 閉操作 .............................................................................................................................................15 最大連通分量提取 ................................................................................................................................15 本章小結(jié) ................................................................................................................................................163 DM 碼定位 .......................................................................................................................................................16 邊緣檢測(cè) ................................................................................................................................................17 Roberts 算子 ....................................................................................................................................17 Sobel 算子 ........................................................................................................................................17 log 算子 ............................................................................................................................................18 邊緣檢測(cè)算子的選取 .....................................................................................................................18 HOUGH 變換線段檢測(cè) ............................................................................................................................19 Hough 變換檢測(cè)直線原理 ..............................................................................................................19 Matlab 中的 Hough 變換 ...............................................................................................................20 圖像校正 ................................................................................................................................................20 傾角計(jì)算 .........................................................................................................................................20復(fù)雜背景下二維條碼圖像的研究識(shí)別 圖像旋轉(zhuǎn) .........................................................................................................................................22 精確裁剪 DM 條碼 ........................................................................................................................22 本章小結(jié) ................................................................................................................................................234 MATLAB 實(shí)驗(yàn)結(jié)果分析 .............................................................................................................................24 DM 碼識(shí)別 ..............................................................................................................................................24 DM 碼解碼 .................................................