This article presents a passive navigation method of terrain contour matching by reconstructing the 3-D terrain from the image sequence(acquired by the onboard camera).To achieve automation and simultaneity of the ima...This article presents a passive navigation method of terrain contour matching by reconstructing the 3-D terrain from the image sequence(acquired by the onboard camera).To achieve automation and simultaneity of the image sequence processing for navigation,a correspondence registration method based on control points tracking is proposed which tracks the sparse control points through the whole image sequence and uses them as correspondence in the relation geometry solution.Besides,a key frame selection method based on the images overlapping ratio and intersecting angles is explored,thereafter the requirement for the camera system configuration is provided.The proposed method also includes an optimal local homography estimating algorithm according to the control points,which helps correctly predict points to be matched and their speed corresponding.Consequently,the real-time 3-D terrain of the trajectory thus reconstructed is matched with the referenced terrain map,and the result of which provides navigating information.The digital simulation experiment and the real image based experiment have verified the proposed method.展开更多
食品安全是事关千家万户的民生大工程,守护人们舌尖上的安全至关重要。危害分析与关键控制点(Hazard Analysis and Critical Control Point,HACCP)体系作为预防性体系,是控制食品安全的重要手段,广泛应用于食品行业的各个细分领域中。...食品安全是事关千家万户的民生大工程,守护人们舌尖上的安全至关重要。危害分析与关键控制点(Hazard Analysis and Critical Control Point,HACCP)体系作为预防性体系,是控制食品安全的重要手段,广泛应用于食品行业的各个细分领域中。本文通过运用HACCP原理分析即食杂粮粥生产过程中的显著性物理、化学和生物危害,确定了关键控制点为高温煮料和金属探测,并制定了控制计划,实施监控、纠偏、验证等措施,保障了即食杂粮粥产品的安全性,为控制即食杂粮粥生产中的食品安全危害提供了一些参考依据。企业在建立和实施HACCP计划时应依据原辅料特性、产品特性、生产工艺等实际情况设定关键控制点,不能盲目生搬硬套。展开更多
基金supported by the "Eleventh Five" Obligatory Budget of PLA (Grant No.513150801)
文摘This article presents a passive navigation method of terrain contour matching by reconstructing the 3-D terrain from the image sequence(acquired by the onboard camera).To achieve automation and simultaneity of the image sequence processing for navigation,a correspondence registration method based on control points tracking is proposed which tracks the sparse control points through the whole image sequence and uses them as correspondence in the relation geometry solution.Besides,a key frame selection method based on the images overlapping ratio and intersecting angles is explored,thereafter the requirement for the camera system configuration is provided.The proposed method also includes an optimal local homography estimating algorithm according to the control points,which helps correctly predict points to be matched and their speed corresponding.Consequently,the real-time 3-D terrain of the trajectory thus reconstructed is matched with the referenced terrain map,and the result of which provides navigating information.The digital simulation experiment and the real image based experiment have verified the proposed method.
文摘食品安全是事关千家万户的民生大工程,守护人们舌尖上的安全至关重要。危害分析与关键控制点(Hazard Analysis and Critical Control Point,HACCP)体系作为预防性体系,是控制食品安全的重要手段,广泛应用于食品行业的各个细分领域中。本文通过运用HACCP原理分析即食杂粮粥生产过程中的显著性物理、化学和生物危害,确定了关键控制点为高温煮料和金属探测,并制定了控制计划,实施监控、纠偏、验证等措施,保障了即食杂粮粥产品的安全性,为控制即食杂粮粥生产中的食品安全危害提供了一些参考依据。企业在建立和实施HACCP计划时应依据原辅料特性、产品特性、生产工艺等实际情况设定关键控制点,不能盲目生搬硬套。
