有摄像机的人都会发现录像带囤积很快,仅仅来自聚会和假日的录像带就不少。同样,企业要储存每时每刻的安全保卫摄像,也面临着储存危机。而且有时为了抓获一名小偷,需要审阅几百分钟的录像带。此刻想来,最好的解决办法是通过网络传输所有的视频图像,但这可能吗?并非尽然。每秒钟传输30帧全动画、真彩色的视频图像相当于每秒发送40本书籍, 这种任务需要很高的带宽,以使Alaskan管道正常工作。好在现在成分波(Wavelet)视频压缩的新技术已经开发成功,这将使视频图像的捕获和传输的效率更高。事实上,MPEG当前的视频压缩标准,在和成分波技术的比较中也显得相当脆弱。MPEG的压缩率在30∶1和100∶1之间,而成分波压缩视频图像的效率最大可以达到300∶1。这意味着成分波压缩在保证图像品质的前提下,可以去除更多 People with video cameras will find tapes hoarding fast, and videotapes just from parties and holidays will be plenty. Similarly, companies want to store security cameras at every moment, as well as a storage crisis. And sometimes in order to capture a thief, you need to review hundreds of minutes of video. At the moment, the best solution is to transfer all the video images over the network, but is this possible? Not all. Sending 30 full-frame animations per second, the true-color video image is equivalent to sending 40 books per second, a task that requires high bandwidth for the Alaskan pipeline to work properly. Fortunately, new techniques for compressing component wavelets have now been developed that will make video capture and transmission more efficient. In fact, MPEG’s current video compression standard is also quite fragile in comparison with component wave technology. The compression rate of MPEG is between 30: 1 and 100: 1, while the component wave compression video images can reach a maximum efficiency of 300: 1. This means that component wave compression can remove more without compromising image quality