轮廓误差曲线
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error curve of outline
以上为机器翻译结果，长、整句建议使用 人工翻译 。
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.
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。
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