轮廓识别采用坐标变换及曲线求二阶导数，避免了果核位置判断误差造成的误判。
In outline recognition, to reduce the misjudge result from calculated error of the core position, reference frame transform and second derivative of curve were adopted.
针对组合形状零件几何尺寸测量中的关键问题—轮廓识别，提出了一种基于弧长的轮廓特征点提取的方法。
An approach to extract feature points on the boundary based on length of arc is proposed in view of the key problem of measuring composite-shape parts.
为了便于分析研究设备的磨损状态等相关性规律，研制了基于计算机的磨粒图像轮廓识别和轮廓分形参数分析软件。
This paper presents the fractal parameter and its calculation method of the worn particles based on particles contours chain code.
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