多联融合优化模板匹配的纱纸管分类方法

Yarn paper tube classification method with multi-linked fusion optimized template matching

  • 摘要: 圆锥纱纸管的自动分类识别一直是该部件智能制造方面的技术难题,针对传统图像分类方法无法兼顾速度与精度,以及深度学习成本大、部署难、硬件要求高等问题,提出了一种基于多联融合优化模板匹配的纱纸管分类方法。采用多个改进算法及策略并使用三次数据降维加快模板匹配速度。将用于运动估计的优化算法SEA(successive elimination algorithm)用于模板匹配中,并把该算法的阈值改进为自适应阈值,用于加强算法鲁棒性;采用小波金字塔进行数据降维,减少运算量并提高运算速度;最后采用十字灰度特征模板代替传统SAD(sum of absolute differences)算法及其模板计算性能指标,并采用提前停止迭代搜索的策略进一步滤除数据,设置累计误差阈值来提前停止搜索。匹配实验表明,本文的改进算法保证了精度,并且匹配速度达到了0.126 s左右;对比、消融实验表明,本文算法在保证了精度的前提下,速度比传统SAD算法提升了近11倍,相比于一些其他经典的方法在速度上也均有提升,证明了该方法的有效性。

     

    Abstract: The automatic classification and recognition of conical yarn paper tubes has been a hot topic in the intelligent manufacturing of this component. A yarn paper tube classification method based on multiple fusion optimized template matching was proposed to address the problems that traditional image classification methods could not balance speed and accuracy, as well as high cost of deep learning, difficult deployment, and high hardware requirements. Several improved algorithms and strategies were adopted and three times data dimensionality reduction was used to accelerate the template matching speed. First, the optimization algorithm, successive elimination algorithm (SEA) used for motion estimation was used in template matching, and the threshold of this algorithm was improved to adaptive threshold for enhancing the robustness of the algorithm. Then, the wavelet pyramid was used to further reduce the amount of operations to improve its speed. Finally, the cross gray scale feature was used instead of the traditional sum of absolute differences (SAD) algorithm to calculate the performance index, and the strategy of stopping the iterative search in advance was used to further filter the data and set the cumulative error threshold to stop the search in advance. The matching experiments show that the improved algorithm guarantees the accuracy and the matching speed reaches about 0.126 s. The comparison and ablation experiments show that, under the premise of ensuring the accuracy, the speed of the algorithm is nearly 11 times higher than that of the traditional SAD algorithm, compared with some other classical methods in the speed are also improved, which verifies the effectiveness of the method.

     

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