针对折反射全景视觉系统特殊的成像原理导致的全景图像变形的特点,以YOLO算法为基础,提出一种E-D-YOLO(expand density YOLO)全景多目标实时检测方法。建立全景系统的成像参数模型,根据全景视觉系统模型进行投影点解算,得到待检目标&qu...针对折反射全景视觉系统特殊的成像原理导致的全景图像变形的特点,以YOLO算法为基础,提出一种E-D-YOLO(expand density YOLO)全景多目标实时检测方法。建立全景系统的成像参数模型,根据全景视觉系统模型进行投影点解算,得到待检目标"矮粗化"的柱面展开图,修改YOLO的网络结构中纵向网格数量,使其适应"矮粗化"的待检目标。实验结果表明,E-D-YOLO相对于YOLO算法在全景目标检测上具有更高的准确度,检测速度高达31帧每秒,保持可观检测精度的同时具有实时性,此外改变实验环境进行对比实验,对比结果表明,E-D-YOLO方法具有一定鲁棒性。展开更多
Our differential and grading toothed roll crusher blends the advantages of a toothed roll crusher and a jaw crusher and possesses characteristics of great crushing,high breaking efficiency,multi-sieving and has,for th...Our differential and grading toothed roll crusher blends the advantages of a toothed roll crusher and a jaw crusher and possesses characteristics of great crushing,high breaking efficiency,multi-sieving and has,for the moment,made up for the short- comings of the toothed roll crusher.The moving jaw of the crusher is a crank-rocker mechanism.For optimizing the dynamic per- formance and improving the cracking capability of the crusher,a mathematical model was established to optimize the transmission angleγand to minimize the travel characteristic value m of the moving jaw.Genetic algorithm is used to optimize the crusher crank-rocker mechanism for multi-object design and an optimum result is obtained.According to the implementation,it is shown that the performance of the crusher and the cracking capability of the moving jaw have been improved.展开更多
文摘针对折反射全景视觉系统特殊的成像原理导致的全景图像变形的特点,以YOLO算法为基础,提出一种E-D-YOLO(expand density YOLO)全景多目标实时检测方法。建立全景系统的成像参数模型,根据全景视觉系统模型进行投影点解算,得到待检目标"矮粗化"的柱面展开图,修改YOLO的网络结构中纵向网格数量,使其适应"矮粗化"的待检目标。实验结果表明,E-D-YOLO相对于YOLO算法在全景目标检测上具有更高的准确度,检测速度高达31帧每秒,保持可观检测精度的同时具有实时性,此外改变实验环境进行对比实验,对比结果表明,E-D-YOLO方法具有一定鲁棒性。
基金Project 50574091 supported by the National Natural Science Foundation of China
文摘Our differential and grading toothed roll crusher blends the advantages of a toothed roll crusher and a jaw crusher and possesses characteristics of great crushing,high breaking efficiency,multi-sieving and has,for the moment,made up for the short- comings of the toothed roll crusher.The moving jaw of the crusher is a crank-rocker mechanism.For optimizing the dynamic per- formance and improving the cracking capability of the crusher,a mathematical model was established to optimize the transmission angleγand to minimize the travel characteristic value m of the moving jaw.Genetic algorithm is used to optimize the crusher crank-rocker mechanism for multi-object design and an optimum result is obtained.According to the implementation,it is shown that the performance of the crusher and the cracking capability of the moving jaw have been improved.
