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多目超高清機(jī)場(chǎng)視頻拼接系統(tǒng)設(shè)計(jì)與軟件實(shí)現(xiàn)
2020年信息技術(shù)與網(wǎng)絡(luò)安全第12期
方諍言,,陳賢富
中國(guó)科學(xué)技術(shù)大學(xué) 微電子學(xué)院,,安徽 合肥230026
摘要: 圖像拼接技術(shù)應(yīng)用范圍十分廣泛,,如全景圖片,、城市建模以及視頻監(jiān)控等工程應(yīng)用領(lǐng)域。針對(duì)機(jī)場(chǎng)中多臺(tái)超高清攝像機(jī)監(jiān)控的場(chǎng)景,,設(shè)計(jì)了一種全景多路超高清監(jiān)控視頻拼接系統(tǒng),。該系統(tǒng)利用具有重疊區(qū)域的多路視頻進(jìn)行實(shí)時(shí)拼接,從而形成具有更大視角的全景視頻,給決策人員提供全面而有效的支持,。系統(tǒng)將傳統(tǒng)的圖像拼接技術(shù)運(yùn)用在視頻拼接上,,采用分布式的系統(tǒng)架構(gòu)并設(shè)計(jì)了一種視頻文件傳輸算法,保證了系統(tǒng)流暢,、穩(wěn)定地運(yùn)行,。首先介紹了該系統(tǒng)軟硬件環(huán)境,給出了系統(tǒng)的總體設(shè)計(jì),;其次介紹了系統(tǒng)的關(guān)鍵功能設(shè)計(jì)以及主要界面實(shí)現(xiàn),;最后進(jìn)行了實(shí)驗(yàn)測(cè)試,得出相關(guān)實(shí)驗(yàn)數(shù)據(jù),。經(jīng)過(guò)測(cè)試,,該系統(tǒng)實(shí)現(xiàn)了8路4K視頻的拼接,,顯示流暢,,無(wú)明顯拼接痕跡,且對(duì)一幀的處理時(shí)間小于40 ms,。
中圖分類(lèi)號(hào): TP391.41
文獻(xiàn)標(biāo)識(shí)碼: A
DOI: 10.19358/j.issn.2096-5133.2020.12.011
引用格式: 方諍言,,陳賢富. 多目超高清機(jī)場(chǎng)視頻拼接系統(tǒng)設(shè)計(jì)與軟件實(shí)現(xiàn)[J].信息技術(shù)與網(wǎng)絡(luò)安全,2020,,39(12):61-66.
Design and implementation of multi-eye ultra-high-definition airport video stitching system
Fang Zhengyan,,Chen Xianfu
School of Microelectronics,University of Science and Technology of China,,Hefei 230026,,China
Abstract: Image stitching technology is widely used in engineering fields, including panoramic pictures, city modeling and video surveillance. A panoramic multi-channel UHD(Ultra High Definition) surveillance video stitching system was designed for scenes monitored by multiple UHD cameras in the airport. Through real-time stitching multi-channel videos with overlapping areas, the system forms a panoramic video with a larger angle of view and provides comprehensive and effective support for decision makers. In addition, the system applies the traditional image stitching technology to video stitching, adopts a distributed system architecture and designs a transmission algorithm of video files, which ensures the smooth and stable operation of the stitching system. This paper firstly introduces the software and hardware environment of the system, and presents the overall design of the system; secondly, it introduces the design of key function of the system and the interface implementation of the main system; finally, it presents relevant experimental data obtained from an experimental test. After testing, this system has realized the stitching of 8-channel 4K video, with its features of smooth display, no-obvious-stitching traces and less than 40 ms of processing time per frame.
Key words : image stitching;ultra high definition,;distributed systems,;airport surveillance

0 引言

    圖像拼接技術(shù)是將數(shù)張有重疊部分的圖像(可能是不同時(shí)間、不同視角或者不同傳感器獲得的)拼成一幅大型無(wú)縫高分辨率圖像[1],。日本的內(nèi)藤誠(chéng)[2]采用多個(gè)PC平臺(tái)的分布式架構(gòu)來(lái)實(shí)現(xiàn)4K超高清實(shí)時(shí)視頻的編碼,,同時(shí)基于MPI(信息傳遞接口)通信協(xié)議實(shí)現(xiàn)多機(jī)通信。布朗[3]采用不變的局部特征作為全局特征進(jìn)行匹配,,該方法適用于攝像機(jī)偏移忽略不計(jì)的理想狀態(tài),。民航二所科研中心自主研發(fā)的全景增強(qiáng)監(jiān)視系統(tǒng),采用8臺(tái)激光投影機(jī)與幕布,,通過(guò)投影融合和視頻墻控制顯示全景視頻,。其優(yōu)點(diǎn)是可以實(shí)現(xiàn)相對(duì)的無(wú)縫拼接,缺點(diǎn)是采用硬件的手段構(gòu)建全景視頻,,硬件成本高,。國(guó)防科技大學(xué)的李靜[4]等人運(yùn)用了一種貝葉斯特征細(xì)化模型來(lái)自適應(yīng)地去除不正確的局部匹配點(diǎn),提高匹配點(diǎn)的正確率,減少拼接后的圖像出現(xiàn)重影,。但對(duì)于實(shí)時(shí)性要求高的場(chǎng)景,,該方案無(wú)法實(shí)現(xiàn)實(shí)時(shí)顯示。電子科技大學(xué)的張浩[5]實(shí)現(xiàn)了基于異構(gòu)多核的DSP處理器進(jìn)行高清1 920×1 080分辨率圖像拼接,。這種基于DSP處理器系統(tǒng)架構(gòu)對(duì)于4K以上分辨率的圖像處理實(shí)時(shí)性較差,。

    經(jīng)過(guò)文獻(xiàn)調(diào)研后,本文設(shè)計(jì)了一種全景多路超高清監(jiān)控視頻拼接系統(tǒng),。該系統(tǒng)運(yùn)用了分布式架構(gòu),,使用了多線(xiàn)程處理技術(shù),并提出了一種基于SMB(Server Message Block)協(xié)議的跨服務(wù)器傳輸視頻流算法,,采用了基于預(yù)計(jì)算拼接參數(shù)的拼接模塊,,大大提高了拼接的實(shí)時(shí)性。最終實(shí)現(xiàn)了機(jī)場(chǎng)監(jiān)控8路4K視頻實(shí)時(shí)拼接,。




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作者信息:

方諍言,,陳賢富

(中國(guó)科學(xué)技術(shù)大學(xué) 微電子學(xué)院,安徽 合肥230026)

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