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- The concept of Dynamic Three-dimension Group (DTDG) was given and each pixel was modeled using three DTDGs.The approach got background extraction. 该方法给出了动态三元组(DTDG)的概念，并且对每个像素用3个动态三元组进行建模，实现了原始背景的提取。
- The video sequences are processed by the background extraction and adaptation, moving objects detection, shadow detection, eroding and dilating image in order to create the moving pedestrian contour. 首先利用视频图像处理技术实现背景提取、背景更新、移动目标检测。
- He has a strong political background. 他有强大的政治背景。
- That incessant background music gets on my nerves. 那没完没了的背景音乐令我非常烦恼！
- He has a working-class background. 他是工人阶级出身。
- Get the fall in the background, will you? 把瀑布拍进背景中去好吗？
- A background accompaniment, as for a performer. 伴奏为一个演奏者配音伴奏
- Such an extract in a solution of alcohol. 酒精提取物酒精溶液中的提取物
- She came from a privileged background. 她出身於特权阶层。
- He tried to extract his pole from the mud. 他试图用力将杆子从泥中拔出来。
- He came from an impoverished background. 他出身贫寒。
- This book gives the background of the Civil War. 这本书叙述了南北战争的背景。
- Other motives may have lurked in the background. 这后面可能隐藏着其它动机。
- He was lurking slyly in the background. 他狡猾地躲在背後活动。
- Her own particular chip on the shoulder was her poor background. 她感到怨恨的特有原因是她的背景不好。
- He stayed in the background to escape from the public attention. 他呆在幕后为了避开公众的注意。
- It take a major operation to extract money from a minor poet. 要从小诗人那儿榨出钱来，得施行一次大手术。
- Algorithms for Background Extraction in Video Monitoring System 视频监控系统中的背景提取算法
- Data mining is to extract knowledge from information. 资料开采是从各种资讯中获得知识。
- She has a lot of power, but like to remain in the background. 她的权力很大，但是喜欢隐身幕后。
