形态滤波和顺序滤波是图像处理中常用的两种方法,用这两种方法分别对含噪图像进行预处理,之后用阈值分割的办法提取出了目标,其中阈值是根据预处理前图像的灰度均值和方差来确定的.文中所处理的图像来自晴空背景下(日出前后)采集的恒星像光斑,经过实验发现用这种方法能较好提取出目标.同时实验证明图像中当目标所占面积比背景噪声点大时,用顺序滤波和阈值分割方法,不但能很好的提取出目标,而且运算速度也较快.最后给出用这种方法对其它图像的处理结果,结果表明此方法也很有效.
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