使用說明 使用時打開此例題目錄下pic中的圖片,然后依次單擊按鈕“轉”、“1”、“2”、“3”、“4”和“5”,就可以實現精確的車牌定位。 具體步驟 1.24位真彩色->256色灰度圖。 2.預處理:中值濾波。 3.二值化:用一個初始閾值T對圖像A進行二值化得到二值化圖像B。 初始閾值T的確定方法是:選擇閾值T=Gmax-(Gmax-Gmin)/3,Gmax和Gmin分別是最高、最低灰度值。 該閾值對不同牌照有一定的適應性,能夠保證背景基本被置為0,以突出牌照區域。 4.削弱背景干擾。對圖像B做簡單的相鄰像素灰度值相減,得到新的圖像G,即Gi,j=|Pi,j-Pi,j-1|i=0,1,…,439 j=0,1,…,639Gi,0=Pi,0,左邊緣直接賦值,不會影響整體效果。 5.用自定義模板進行中值濾波 區域灰度基本被賦值為0。考慮到文字是由許多短豎線組成,而背景噪聲有一大部分是孤立噪聲,用模板(1,1,1,1,1)T對G進行中值濾波,能夠得到除掉了大部分干擾的圖像C。 6.牌照搜索:利用水平投影法檢測車牌水平位置,利用垂直投影法檢測車牌垂直位置。 7.區域裁剪,截取車牌圖像。
上傳時間: 2014-01-17
上傳用戶:851197153
Trie樹既可用于一般的字典搜索,也可用于索引查找。對于給定的一個字符串a1,a2,a3,...,an.則采用TRIE樹搜索經過n次搜索即可完成一次查找。不過好像還是沒有B樹的搜索效率高,B樹搜索算法復雜度為logt(n+1/2).當t趨向大,搜索效率變得高效。怪不得DB2的訪問內存設置為虛擬內存的一個PAGE大小,而且幀切換頻率降低,無需經常的PAGE切換。
上傳時間: 2016-07-06
上傳用戶:sk5201314
集成溫度傳感器實質上是一種半導體集成電路,它是利用晶體管的b-e 結壓降的不飽和 值VBE與熱力學溫度T 和通過發射極電流I 的下述關系實現對溫度的檢測:
上傳時間: 2016-07-11
上傳用戶:363186
The task of clustering Web sessions is to group Web sessions based on similarity and consists of maximizing the intra- group similarity while minimizing the inter-group similarity. The first and foremost question needed to be considered in clustering W b sessions is how to measure the similarity between Web sessions.However.there are many shortcomings in traditiona1 measurements.This paper introduces a new method for measuring similarities between Web pages that takes into account not only the URL but also the viewing time of the visited web page.Yhen we give a new method to measure the similarity of Web sessions using sequence alignment and the similarity of W eb page access in detail Experiments have proved that our method is valid and e幣cient.
標簽: sessions clustering similarity Web
上傳時間: 2014-01-11
上傳用戶:songrui
flash 鍵盤音效取自win2000系統ding.wav,經過CoolEdit處理成音階,在Flash中導入在相應按鈕上。 沒有難度,就是耐心一點,成績不錯哦! 對應表: 低音G-a #G-w A-s #A-e B-d 中音C-f #C-t D-g #D-y E-h F-j #F-i G-k #G-o A-l #A-p B- 高音C-1 D-2 E-3 F-4 G-5 A-6 B-7 C(high)-8 #C-c #D-v #F-b #G-n #A-m
上傳時間: 2014-02-06
上傳用戶:ljmwh2000
一個神經網絡的工具箱,用于M a t l a b中
上傳時間: 2016-09-28
上傳用戶:zhanditian
Part2 using C++ Operators if you are dreading this chapter because you don t like math_relax. c++ does all your math for you!it is a miscon ception that you have to be good at math to understand how to program compters.
標簽: math_relax Operators you dreading
上傳時間: 2016-10-16
上傳用戶:tonyshao
Part5 using C++ Operators if you are dreading this chapter because you don t like math_relax. c++ does all your math for you!it is a miscon ception that you have to be good at math to understand how to program compters.
標簽: math_relax Operators you dreading
上傳時間: 2014-01-22
上傳用戶:wlcaption
Atheros Communications AR6001 WLAN Driver for SDIO installation Read Me March 26,2007 (based on k14 fw1.1) Windows CE Embedded CE 6.0 driver installation. 1. Unzip the installation file onto your system (called installation directory below) 2. Create an OS design or open an existing OS design in Platform Builder 6.0. a. The OS must support the SD bus driver and have an SD Host Controller driver (add these from Catalog Items). b. Run image size should be set to allow greater than 32MB. 3. a. From the Project menu select Add Existing Subproject... b. select AR6K_DRV.pbxml c. select open This should create a subproject within your OS Design project for the AR6K_DRV driver. 4. Build the solution.
標簽: Communications installation Atheros Driver
上傳時間: 2016-10-27
上傳用戶:hebmuljb
(1) 設計算法并編制程序,進行調試。 (2) 用調試好的程序解決如下問題: 計算 的近似值,取精度為 步驟一、先編制計算函數值的程序; 步驟二、執行編制好的Romberg算法,輸出T。 (3)用Romberg算法和復合Simpson公式分別計算 的近似值, 其中b分別取為b=0.1, 0.3, 0.5, 0.7, 0.9
上傳時間: 2014-12-03
上傳用戶:四只眼