本文關(guān)鍵詞：基于H.264的嵌入式遠(yuǎn)程視頻監(jiān)控系統(tǒng)的設(shè)計(jì)與實(shí)現(xiàn)　出處：《武漢科技大學(xué)》2012年碩士論文　論文類型：學(xué)位論文

  更多相關(guān)文章： 遠(yuǎn)程視頻監(jiān)控 嵌入式Linux H.264 SOCKET

【摘要】：視頻監(jiān)控系統(tǒng)隸屬于安全防范系統(tǒng)，具備較強(qiáng)的防范能力。視頻監(jiān)控以其直觀、方便、豐富的信息內(nèi)容而被廣泛應(yīng)用于眾多場(chǎng)合。新一代視頻壓縮標(biāo)準(zhǔn)H.264在視頻圖像壓縮編碼上具備更高的壓縮率，能夠適用于大多數(shù)應(yīng)用場(chǎng)合。H.264可以實(shí)現(xiàn)在盡可能小的存儲(chǔ)空間下保證圖像的高質(zhì)量。所以市場(chǎng)對(duì)視頻監(jiān)控的要求越來(lái)越高。那些編碼效率不高而且又要求高帶寬的視頻監(jiān)控系統(tǒng)已經(jīng)不適用。 本文結(jié)合H.264視頻編碼算法與嵌入式技術(shù)來(lái)設(shè)計(jì)一款基于H.264的嵌入式平臺(tái)上的遠(yuǎn)程視頻監(jiān)控系統(tǒng)。編碼效率更加高效，減少了帶寬占用量，提高了傳輸效率。在本文中，本人完成的工作如下： （1）對(duì)視頻監(jiān)控系統(tǒng)的背景、發(fā)展歷程以及發(fā)展趨勢(shì)做了一些介紹。 （2）首先就本文涉及的核心算法H.264進(jìn)行了詳細(xì)的闡述，然后重點(diǎn)介紹了其中包含的幾種關(guān)鍵技術(shù)，并將其與之前幾種編碼標(biāo)準(zhǔn)進(jìn)行了對(duì)比，，總結(jié)了它們的優(yōu)缺點(diǎn)。 （3）詳細(xì)介紹了軟硬件平臺(tái)的搭建，其中完成了Linux內(nèi)核、BootLoader和根文件系統(tǒng)的移植。 （4）設(shè)計(jì)采集模塊與傳輸模塊以及其中包含的一些編碼庫(kù)、USB驅(qū)動(dòng)移植和Socket的創(chuàng)建等。 （5）與以前相比，合理采用H.264編碼算法，結(jié)果證明該系統(tǒng)在對(duì)視頻信息的壓縮上效果更好，也進(jìn)一步節(jié)約了帶寬；對(duì)比之前的Windows操作系統(tǒng),選取嵌入式平臺(tái)來(lái)開(kāi)發(fā)該系統(tǒng)簡(jiǎn)化了開(kāi)發(fā)過(guò)程中的一些程序也提高了工作效率；在視頻采集部分采用mmap()取代之前的read()和write()，大大提高了工作效率。實(shí)驗(yàn)結(jié)果證明本文開(kāi)發(fā)的視頻監(jiān)控系統(tǒng)得到了預(yù)期的效果。
[Abstract]:Video surveillance system belongs to the security prevention system, and has a strong ability of prevention. Video surveillance is intuitive and convenient. The new generation video compression standard H.264 has a higher compression ratio in video compression coding. It can be used in most applications. H. 264 can guarantee the high quality of image in the smallest possible storage space. So the market demand for video surveillance is higher and higher. High bandwidth video surveillance system is no longer applicable. This paper combines H.264 video coding algorithm with embedded technology to design a remote video surveillance system based on H.264 embedded platform. The coding efficiency is more efficient and the bandwidth consumption is reduced. The transmission efficiency is improved. In this paper, my work is as follows: 1) introduce the background, development history and development trend of video surveillance system. Firstly, the core algorithm H.264 is described in detail, and then several key technologies are introduced and compared with the previous coding standards. Their advantages and disadvantages are summarized. The hardware and software platform is introduced in detail, in which the Linux kernel Boot Loader and the root file system are transplanted. (4) the collection module and transmission module are designed, and some coding libraries are included, such as USB driver porting and Socket creation. Compared with before, the H.264 coding algorithm is used reasonably. The results show that the system can compress video information more effectively and save the bandwidth further. Compared with the previous Windows operating system, choosing the embedded platform to develop the system simplifies some programs in the development process and improves the working efficiency. In the video capture part, we use mmapan) instead of the previous READX) and writebur). The experimental results show that the video surveillance system developed in this paper has achieved the desired results.
【學(xué)位授予單位】：武漢科技大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2012
【分類號(hào)】：TP277;TP368.1

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