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      <div class="weizhi">当前位置：<a href="/">首页</a> &gt; <a href="/news.html">新闻动态</a> &gt; 防爆摄像机图像压缩编码标准主要有哪几种？</div>
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       <h1 class="biaoti">防爆摄像机图像压缩编码标准主要有哪几种？</h1>
       <div class="fabiao">更新时间：2022-09-19&nbsp;&nbsp;|&nbsp;&nbsp;点击率：1021</div>
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       &nbsp;<span style="font-size: 12px;">　　防爆摄像机是一种结合传统摄像机与防爆技术所产生的新一代摄像机，它可以将影像通过网络传至地球另一端，且远端的浏览者不需用任何专业软件，只要标准的网络浏览器即可监视其影像。</span><div><span style="font-size: 12px;">　　防爆摄像机的图像压缩编码标准主要有MPEG4、H.264、M-JPEG等。</span></div><div><span style="font-size: 12px;">　　MPEG4</span></div><div><span style="font-size: 12px;">　　所谓MPEG标准就是指由ISO的活动图像专家组制定的一系列关于音视频信号以及多媒体信号的压缩与解压缩技术的标准。到2012年为止，已经制定完成并批准执行的有：1991年批准的MPEG1、MP3;1994年批准的MPEG2;1999年批准的MPEG4和MP4。正在制定的标准有：MPEG7和MEPG21.H.263H.263是ITU-T提出的作为H.324终端使用的视频编解码建议，H.263经过不断地完善和多次的升级已经日臻成熟，如今已经大部分代替了H.261，而且H.263由于能在低带宽上传输高质量的视频流而日益受到欢迎。</span></div><div><span style="font-size: 12px;">　　263是基于运动补偿的DPCM的混合编码，在运动补偿的DPCM混合编码，在运动搜索的基础上进行运动补偿，然后运用DCT变换和&ldquo;之&rdquo;字形扫描编码，从而得到输出码流。H.263在H.261建议的基础上，将运动矢量的搜索增加为半象素点搜索；同时又增加了无限制运动矢量、基于语法的算术编码、预测技术和PB帧编码等四个优质选项；从而达到了进一步降低码速率和提高编码质量的目的。</span></div><div><span style="font-size: 12px;">　　264</span></div><div><span style="font-size: 12px;">　　264是ITU-T的VCEG和ISO/IEC的MPEG的联合视频组开发的一个新的数字视频编码标准，它既是ITU-T的H.264，又是ISO/IEC的MPEG4的第十部分。在相同的重建图像质量下，H.264能够比H.263节约50%左右的码率，比根据MPEG4实现的视频格式在性能方面提高33%左右。</span></div><div><span style="font-size: 12px;">　　M-JPEG</span></div><div><span style="font-size: 12px;">　　M-JPEG技术即运动静止图像压缩技术，它把运动的视频序列作为连续的静止图像来处理，这种压缩技术方式单独完整地压缩每一帧，在编辑过程中可随机存储每一帧，可进行精确到帧地编辑。但M-JPEG只对帧内地空间冗余进行压缩，不对帧间的时间冗余进行压缩，故压缩效率不高。</span></div><div><span style="font-size: 12px;"><br /></span></div><div><span style="font-size: 12px;"><br /></span></div><div><span style="font-size: 12px;"><br /></span></div><div>&nbsp;</div>
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