您要查找的是不是：
- background RGB subtraction 色彩背景差分
- The paper introduces several methods for vision-surveillance using background subtraction,frame-difference method,symmetrical differencing and a method based on RGB image. 介绍了在视觉监控领域经常用到的几种运动人体检测算法,如背景减除法、帧差法、对称差分法、基于RGB图像的运动检测法。
- Two from five is a simple subtraction. 五减二是简单的减法。
- He has a strong political background. 他有强大的政治背景。
- If you subtract 2 from 8, you get 6. 8减去2是6。
- That incessant background music gets on my nerves. 那没完没了的背景音乐令我非常烦恼！
- Subtract 3 from 7 and you have 4. 七减三得四。
- 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
- She came from a privileged background. 她出身於特权阶层。
- 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。
- The little girl has begun to learn to add and subtract. 这小女孩已在学做加减法了。
- He was lurking slyly in the background. 他狡猾地躲在背後活动。
- We do addition and subtraction in arithmetic. 在算术里，我们作加减运算。
- If you subtract 3 from 5, you get 2. 五减去三就得二。
- 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。
- Press I to change the RGB intensity of the brush. I键改变笔刷RGB颜色的深度。
