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畢業(yè)論文-基于opencv的視頻人臉識別系統(tǒng)的設(shè)計與實現(xiàn)(留存版)

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【正文】 著對圖像進(jìn)行預(yù)處理(比如灰度化等),然后將人臉大致范圍用圓圈圈出來。 人臉檢測在國防軍事、防火防盜、制度考勤、身份識別等方面有著重要的應(yīng)用。s Pink Revolution, an annual campaign that seeks to raise awareness and funds for breast cancer research, the hotel recently announced. A major sponsor of the campaign for three years in a row, Conrad Macao has pledged to donate a portion of its proceeds to the fund, includ ing those collected from selling its popular bear and rubber duck merchandise, in limited pink editions. Pink is the theme for floral arrangements and decorations in the hotel in October. In addition, on Fridays that month, members of the management and staff will add something pink to their uniforms, regular s and handwritten guest cards. Breast cancer is the most prevalent type of cancer among women in Hong Kong and is also of significant concern in Macao and around the world, regardless of age, general manager Bede Barry said in a statement. The hotel has enlisted the support of a number of international and local celebrities to help drive the cause, including South Korean actor Jung Suk Won. This year, a lucky guest who stays at the hotel during the campaign and also donates money for the cause will win a necklace specially designed by Arte Madrid, a Spanish jewelry brand. Women should strive to balance quality of work and life, and have children at a young age. As a doctor I see much suffering because of this imbalance. Xiao Ying, 36, works for a large law firm. Her job means lots of travel, a heavy caseload and a large number of meetings, so her schedule is hectic. She has been pregnant twice, but had abortions on both occasions because she felt her busy, highpressure career wasn39。s smoggy days. If the smog is severe, I39。接著介紹原型系統(tǒng)的實現(xiàn),首先啟動系統(tǒng)進(jìn)入人臉檢測界面,點擊攝像鍵攝像并保 存,對圖像預(yù)處理檢測有無人臉,對人臉進(jìn)行定位并標(biāo)出關(guān)鍵部位,提取特征與數(shù)據(jù)庫中的特征進(jìn)行對比識別身份。啟動系統(tǒng)后進(jìn)入人臉檢測界面,點擊攝像鍵后進(jìn)入如下 界面進(jìn)行人臉區(qū)域檢測、圖像預(yù) 處理、特征標(biāo)注、特征提取等 步驟。隨后用特定算法來標(biāo)定特定值并存入后臺數(shù)據(jù)庫。 AdaBoost 算法訓(xùn)練過程就是挑選最優(yōu)弱分類器,并賦予權(quán)重的過程。依次類推,經(jīng)過 T 次循環(huán),得到 T 個弱分類器,把這 T 個弱分類器按一定的權(quán)重疊加( boost)起來,得到最終想要的強(qiáng)分類器。在輸入圖像中確定所有的人臉存在的位置,大小,位姿的過程。對于人臉識別數(shù)為 P 的人臉識別問題來說,網(wǎng)絡(luò)輸出層的神經(jīng)元數(shù) J 就取為人臉類別數(shù) P,對于任意一個人臉測試圖像,可根據(jù)網(wǎng)絡(luò)輸出層輸出矢量的最大分量分類。人工神經(jīng)網(wǎng)絡(luò)的識別方法在人臉識別中的應(yīng)用有很長的歷史,它有其特殊的適合于人臉識別的優(yōu)勢。其中識別時訓(xùn)練過的人員的人臉圖像是系統(tǒng)默認(rèn)合法的人員,因此可以以此來限制進(jìn)入重要場所的人員。此項技術(shù)需要使用者作臉部表情的配合動作。 OpenCV 為 Intel174。但是使用生物特征,就可以做到當(dāng)事人在網(wǎng)上的數(shù)字身份和真實身份統(tǒng)一,從而大大增加電子商務(wù)和電子政務(wù)系統(tǒng)的可靠性西北大學(xué)本科畢業(yè)論文 [7]。人臉識別技術(shù)是一個非?;钴S的研究領(lǐng)域,它覆蓋了數(shù)字圖像處理、模式識別、計算機(jī)視覺、神經(jīng)網(wǎng)絡(luò)、心理學(xué)、生理學(xué)、數(shù)學(xué)等諸多學(xué)科的內(nèi)容。為了提高臉部識別率, Allen 為待識別臉設(shè)計了一種有效且逼真的摹寫。而人臉識別技術(shù)具有比其他生物特征識別技術(shù)更直觀、簡便、準(zhǔn)確、可靠及可擴(kuò)展性良好等眾多優(yōu)勢,因而應(yīng)用廣泛。 ( 2) Design of a fast face detection algorithm in video based on OpenCV. Face detection is the precondition of face recognition, this paper uses OpenCV fast face detection algorithm to locate face in video image and extraction based on。同時,人臉檢測要走向?qū)嶋H應(yīng)用,精度和速度是亟需解決的兩個關(guān)健問題 [4],自 20 世紀(jì) 90 年代以來,人臉檢測的精度得到了大幅度的提高,但是速度卻一直達(dá)不到應(yīng)用系統(tǒng)用戶滿意的程度,為此研究者們付出艱辛的努力,直到 21世紀(jì) Viola 基于 AdaBoost 算法的人臉檢測器的發(fā)表 [8],人臉檢測的速度才得到了實質(zhì)性的提高,該算法的發(fā)表也促進(jìn)了人臉檢測研究的進(jìn)一步蓬勃發(fā)展??傮w而言,目前建立一個魯棒的人臉識別系統(tǒng)仍然是一個很困難的問題。如計算機(jī)登 錄、電子政務(wù)和電子商務(wù)。 2. 人臉識別系統(tǒng)的技術(shù)框架和功能模塊 . OpenCV 簡介 OpenCV 的全稱是 (Open Source Computer Vision Library ),OpenCV 于 1999 年由Intel 建立, 如今由 Willow Garage 提供支持。在進(jìn)行人臉?biāo)阉鲿r(搜索式),將指定的人像進(jìn)行建模,再將其與數(shù)據(jù)庫中的所有人的模板相比對識別,最終將根據(jù)所比對的相似值列出最相似的人員列表。即對數(shù)據(jù)庫中的人臉圖像進(jìn)行增加、刪除、和修改等操作。本文主要用基于神經(jīng)網(wǎng)絡(luò)的方法進(jìn)行人臉識別,下一節(jié)將詳細(xì)介紹這一方法。在隱層數(shù)足夠多的情況下,由超平面所形成的線性區(qū)域?qū)o窮多,其第一隱層可以在模式空間實現(xiàn)各種超平面分割;第二隱層實現(xiàn)第一隱層的邏輯“與”運算,即將其分割的模式超平面空間按類別進(jìn)行空間劃分;而輸出層由第 二隱層的輸出值進(jìn)行邏輯“或”運算,即將進(jìn)行邏輯“與”運算的屬于同一類的超平面進(jìn)行歸類。本文主要用基于神經(jīng)網(wǎng)絡(luò)的人臉識別方法進(jìn)行人臉識別。 AdaBoost 算法中不同的訓(xùn)練集是通過調(diào)整每個樣本對應(yīng)的權(quán)重來實現(xiàn)的。利用上述 Haar 特征的位置信息,對訓(xùn)練樣本進(jìn)行統(tǒng)計就可以得到對應(yīng)的特征參數(shù)。 ( 5)特征提取模塊。具體功能界面如下 所示。為了提高訓(xùn)練速度只能減少特征數(shù)量,可以在特征生成階段,人為地提出剔除,或者在訓(xùn)練階段動態(tài)的減少。s digitized society, will also be attached on the report.Myopia is not only a disease that makes people see things blurrily, but also leads to severeplications, such as glaua (increased pressure within the eyeball), and can causeblindness, said Zhou Yuehua, an established eye care specialist with Beijing TongrenHospital.It is very important for parents and children to know about the risk and care for their eyes.There are about 450 million myopia patients in China. Among Chinese myopia patients,30million are severe patients, according to ZhouThe prevalence of myopia among high school and college students is more than 70 percent,and the situation is continuously worsening, he Zhu, director with the China Youth Development Service Center, said long hours ofstudy, lack of exercise, especially outdoor activities, and attachment to electronic screen aresome of the top reasons behind the widespread myopia problems, and the increase ofyounger patients, although China has made great progress in improving the hardwarefacilities and lighting conditions in said he hopes the survey will alert people on the threatening situation, and also helpmedical experts to better guideline parents and children39。s suggestion that a special day be marked in the year for the global practice of the stressbusting regimen, which is already a multibillion dollar industry in the United States. Modi said in the speech: Yoga is an invaluable gift of India39。 本次畢設(shè)我收獲很大,喜不勝收,希望今后能夠?qū)W習(xí)相關(guān)知識,更加深入的學(xué)習(xí)幾種編程語言,多做實際項目,將理論用于實踐,以便提高自己的綜合素質(zhì)。所以在前期訓(xùn)練的時候,訓(xùn)練樣本集的選取就顯得很重要。點擊第一個就可以人臉識別與檢測的進(jìn)程了。圖像預(yù)處理就是對獲取的圖像進(jìn)行適當(dāng)?shù)奶幚?,使得無用信息被剔除,有用信息被保存并增強(qiáng)效果。 (5)以非人臉圖片集為輸入,組合強(qiáng)分類器為臨時的級聯(lián)分類器,篩選并補(bǔ)充非人臉樣本。一是基于模版匹配的算法,其核心思想是利用人的臉部特征規(guī)律建立一個立體可調(diào)的模型框架,在定位出人的臉部位置后用模型框架定位和調(diào)整人的臉部特征定位,解決人臉識別過程中的 觀察角度、遮擋和表情變化等影響因素。 H≈ K/2 即網(wǎng)絡(luò)隱層的神經(jīng)元數(shù)是取為訓(xùn)練樣本數(shù)的一半。由于系統(tǒng)每增加一個人,都要對網(wǎng)絡(luò)經(jīng)行重新訓(xùn)練,因此這種系統(tǒng)性能不佳。 輸入訓(xùn)練集人臉圖像 圖像預(yù)處理 神經(jīng)網(wǎng)絡(luò)訓(xùn)練 特征提取 特征提取 輸入檢測集人臉圖像 圖像預(yù)處理 決策輸出 神經(jīng)網(wǎng)絡(luò)分類器 基于 OpenCV 的 視頻人臉識別系統(tǒng)的設(shè)計與實現(xiàn) 13 . 常用人臉識別方法 人臉識別包括兩個方面:一是人臉檢測和定位,二是人臉識別。對采集到的人臉圖像進(jìn)行統(tǒng)一的處理,將其處理為大小統(tǒng)一,存儲格式一致的灰度圖像。 . 人臉識別的功能模塊 ? 人臉捕獲與跟蹤功能: 人臉捕獲是指在一幅圖像或視頻流的一幀中檢測出人像并將人像從背景中分離出來,并自動地將其保存。 第四章:概述了人臉檢測相關(guān)算法,介紹了本文基于 AdaBoost 算法的人臉 檢測 算法。 、司法和刑偵。更進(jìn)一步地, T. Kanad 設(shè)計了一個高速且有一定知識導(dǎo)引的半自動回溯識別系統(tǒng),創(chuàng)造性地運用積分投影法從單幅圖像上計算出一組臉部特征參數(shù),再利用模式分類技術(shù)與標(biāo)準(zhǔn)人臉相匹配。在國內(nèi),對于人臉識別技術(shù)的研究始于上世紀(jì) 90 年代,目前主要應(yīng)用在公安、金融、網(wǎng)絡(luò)安全、物業(yè)管理以及考勤等領(lǐng)域。 本科畢業(yè)論文(設(shè)計)
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