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【目标跟踪】基于背景消减的图像帧间差分法目标检测及matlab仿真
2022-07-16 04:18:00 【fpga和matlab】
1.软件版本
matlab2013b
2.系统实现
算法流程如下:

算法的构成部分为:三帧差分、获取背景和更新、背景消减、目标检测等。先是使用三帧差分以及背景消减计算源图像,接着把使用这两种方式获得二值化模版的图像逻辑“或”获得中间模板图像,接着以特定的模型为基础从而来对背景进行更新,最后对模版分析连通构建以及形态学滤波,进而对模板中的小噪声区域进行消除,对对象进行平滑的切割。此方式的重点为更新背景模型以及三帧差处理,前者更是消减后续背景的基础。
1.2背景提取
此文采用Surendra背景更新法获取背景图像,主要原理为利用当前帧的帧差获得物体的移动范围,让此范围内的背景维持相对静止的状态,使用当前帧对不属于此范围的背景进行更换。过一段时间之后,能获得背景图像。其计算方式能分解为下面的流程:

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