Conclusion MCI have impaired function on the material visual memory and visual memory of meaningless pictures, have immediate and delayed memory dysfunction, and delayed recall is poorer than immediate recall. The plasticity of short-term memory updating is poor in MCI. 结论轻度认知障碍患者对具体视觉形象的记忆能力及对无意义图形的视觉记忆能力受损,存在即刻记忆和延迟记忆障碍,且延迟回忆较即刻回忆损害明显,短时记忆更新的可塑性差;
According to the character of bus APC system, this paper using both the delayed subtraction and average gray information, presents an adaptive background updating method based on background subtraction, and implements moving objects detection of video sequences successfully. 针对公交车APC系统的特征,在背景差法的基础上,结合相邻帧差以及平均灰度差,提出了一种自适应背景更新算法,以此为基础,实现了视频图像序列中的运动目标检测。