窗口服务器为客户提供了一块共用内存区域用来绘图，然后(用gpu)将其混合为帧缓冲。
The window server provides a region of Shared memory to clients for drawing and then composites this into the frame buffer (on the GPU).
根据这个比例的混合用户，我们按照内存或用户的数量划分测试。
With this user mix, we divided the tests into user and memory amounts in the following manner.
由于室内存在多种物体，背景不断变化，且光照条件可能不断变化，提出采用人脸肤色的标准混合高斯模型与人眼特征相结合的人脸检测法，无需对原始图像进行尺度变换。
An effective and fast method of face detection for a service robot is proposed, which combines a mixture of Gaussian distribution model of skin tone color with eyes features.
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