本文選題：廣告監(jiān)播 + 音頻監(jiān)測��； 參考：《電子科技大學》2012年碩士論文

【摘要】：廣告監(jiān)播主要用于收集同行業(yè)的廣告投遞情況，進一步明確自身的廣告內(nèi)容與投放方式，分析媒體在產(chǎn)品推廣中的作用；為媒體提供履行廣告合同的依據(jù)。本文提出的基于FPGA實現(xiàn)的廣告監(jiān)播系統(tǒng)分為音頻監(jiān)測部分與臺標識別部分，這兩個部分并行執(zhí)行識別動作。其核心模塊是特征提取與模板匹配。 音頻監(jiān)測部分中，設計了對起始位置不太敏感同時數(shù)據(jù)量小的滑窗累加算法完成音頻特征提取。同時設計了一鍵建庫的功能，可以隨時添加或更新比對庫中的音頻特征信息。每個系統(tǒng)可并行監(jiān)播6路音頻廣告，節(jié)省開支。音頻濾波部分引入了模型設計的思想，使用filterbuilder完成濾波器的自動代碼生成。 臺標識別部分綜合使用動態(tài)對消法與具有滑窗模板的閾值分割算法進行特征提取。不會隨著臺標的位置移動而影響臺標的識別率，體現(xiàn)了良好的抗抖動性與魯棒性。臺標的識別庫支持升級，以防止電視臺臺標的更換而影響識別的效果。 模板匹配采用搜索比對的方式，兼顧了空間判據(jù)與時間判據(jù)，具有一定的抗干擾性，有效降低了漏報率與虛報率。 最后對系統(tǒng)完成了模塊的仿真驗證與級聯(lián)調(diào)試，經(jīng)實驗證明該系統(tǒng)具有穩(wěn)定可靠的特性。基于FPGA的廣告監(jiān)播系統(tǒng)具有智能檢測廣告，支持實時建庫，同時識別出廣告所在的電視臺等特點，，為廣告的監(jiān)播提供充分的依據(jù)。
[Abstract]:Advertising supervision and broadcasting is mainly used to collect the information of advertising delivery in the same industry, to further clarify its own advertising content and mode of delivery, to analyze the role of media in product promotion, and to provide the media with the basis for fulfilling the advertising contract. The advertising monitoring system based on FPGA is divided into audio monitoring part and station mark recognition part. These two parts perform recognition in parallel. Its core module is feature extraction and template matching. In the audio monitoring part, a sliding window accumulation algorithm, which is not sensitive to the starting position and has a small amount of data, is designed to extract audio features. At the same time, the function of one-key library is designed, which can add or update the audio feature information in the comparison library at any time. Each system can broadcast 6 audio advertisements in parallel, saving money. In the part of audio filter, the idea of model design is introduced, and filterbuilder is used to complete the automatic code generation of the filter. The recognition part uses dynamic feature extraction method and threshold segmentation algorithm with sliding window template. It does not affect the recognition rate of the station mark by moving with the position of the station mark, which reflects the good anti-jitter and robustness. The identification library of station mark supports upgrading to prevent the change of station mark and influence the effect of identification. Template matching is based on searching and comparing, which takes spatial criterion and time criterion into account. It has some anti-interference, and effectively reduces the rate of missing report and false report. Finally, the simulation and cascade debugging of the system are completed, and the system is proved to be stable and reliable. The advertising monitoring and broadcasting system based on FPGA has the characteristics of intelligent detection, real-time database building and recognition of the television station where the advertisement is located, which provides sufficient basis for the monitoring and broadcasting of advertisements.
【學位授予單位】：電子科技大學
【學位級別】：碩士
【學位授予年份】：2012
【分類號】：TN948.1;TN791

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