The background difference is important for segmenting mobile objects. But this method highly depends on background quality and easily regards moving shadows as objects.

背景差分法是一种重要的运动目标分割方法，但是其不仅对背景质量的要求较高，且易将运动阴影误检测为前景目标。

youdao

During a shoot, mic placement is optimized for dialog, and the quality of background sounds can suffer.

射击时，麦克风的摆位要照顾对白，就可能导致背景声音的音质大打折扣。

youdao

Under the condition of complicated background traffics, how to maintain the Quality of Services (QoS) of VoIP is a hotspot in recent research.

如何在网络流量背景复杂的情况下保证因特网电话的服务质量是当前的一个研究热点。

youdao

By using Hollywood quality background and motion formats, you can drop in video or still images, select music from the library and get a great looking video.

FORBES: 5 Cost Effective Ways To Drive Online Video In 2013

Beyond the sleek design and processing power, VIZIO continues to leverage its HDTV background with brilliant picture quality, high contrast and wider viewing angles, a staple of the Touch PCs.

ENGADGET: Vizio brings pricing and release information to spring line of laptops and desktops

Customers can also stay in touch via video chat, while enjoying excellent voice quality with reduced background noise through the built-in digital microphone.

ENGADGET: Gateway pumps out EC Series ultraportables