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中文摘要：
根据从图像中提取的裂纹缺陷特征，提出一种基于线密度投影（PODOL）的轮胎裂纹缺陷检测方法．首先对轮胎图像进行线密度投影，得到它们的PODOL一阶导数绝对值曲线；然后提取裂纹图像的特征曲线，以这些特征曲线作为标准判定轮胎是否含有裂纹．实验结果表明，文中提出的特征曲线检测标准不受图像纹理的影响，可以高效地检测轮胎裂纹缺陷；且该方法速度快、实现简单，已经成功用于轮胎裂纹缺陷的实时在线检测．
英文摘要：
The paper proposed a new image-based detection method for tire crack-defect according to projection of density of lines （PODOL）. First, the PODOL curves are computed from the tire image and their modulus curves of first order derivative are evaluated. Then, a new feature curve is defined and extracted from the first order derivative modulus curves. It will be employed as a new criterion for detecting the crack-defects. The experimental results show that the proposed method is texture- invariant and can be applied to detect crack-defects in tire images efficiently. The proposed method has been used in real-time online tire detection.
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