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传统目标检测方法不能很好地满足红外跟瞄系统运动时的地面运动目标快速精确检测需要,另外由于红外烟幕干扰,图像的质量降低,也会影响目标检测的精度。为此,提出了一种烟幕环境下红外运动目标的快速检测方法。该方法首先快速提取两帧红外图像的FAST特征点,提出了改进的二进制BRIEF特征描述符进行背景匹配,然后采用随机一致性算法估计全局运动参数进行运动补偿,最后采用帧间差分法进行目标检测。实验表明,该算法能够有效地降低烟幕干扰对运动补偿的影响,快速精确地检测出运动目标的位置,对烟幕干扰及运动背景具有很好的鲁棒性。 相似文献
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针对当前周视IRST系统中对运动目标检测的需求,综合考虑系统硬件成本和系统实时处理能力需求,研究了基于帧间差分法的运动目标检测算法,并基于FPGA+DSP硬件处理平台,进行了算法的硬件实现与优化,实验结果表明,该信号处理系统检测性能优异,满足目前IRST系统中对运动目标检测的应用需求。 相似文献
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运动目标的正确检测影响着运动目标能否被正确跟踪与分类,因此成为视频监控系统研究中的一项重要课题。文中对运动目标检测算法进行研究,实现对铁路沿线前方目标的有效识别,针对得到的视频序列,通过混合高斯模型进行背景建模,并与混合差分算法结合实现前景的提取与检测。通过与混合差法相比较,其仿真结果表明,该算法具有一定的可行性。 相似文献
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文章是以Nios II处理器为中心的视频运动目标检测跟踪系统,通过CMOS图像传感器采集视频图像信息,采用帧间差分法检测运动目标,形心跟踪算法对目标进行跟踪,最后在VGA显示器上显示视频中运动物体。实验结果表明,该系统可达到运动目标检测跟踪的理想结果。 相似文献
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红外图像中快速运动目标的检测与跟踪方法 总被引:1,自引:0,他引:1
红外热成像图像具有分辨率较低,细节模糊,对于快速运动目标适应性较差的特点。本文提出了一种结合目标检测算法,目标跟踪算法的红外图像中快速运动目标的检测与跟踪方法。该方法根据红外图像特点,使用ViBE算法检测运动目标,检测出图像中显著运动目标后,触发跟踪器,使用fDSST目标跟踪算法对显著运动目标进行跟踪。测试结果表明,该方法对于快速运动的红外图像目标能够高效检测、快速跟踪。检测与跟踪效果相对传统方法具有检测率更高、鲁棒性更好、实时性更强的优势,对于红外图像中目标检测与跟踪具有很强应用价值。 相似文献
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Scotti G. Marcenaro L. Coelho C. Selvaggi F. Regazzoni C.S. 《Vision, Image and Signal Processing, IEE Proceedings -》2005,152(2):250-257
A novel integrated multi-camera video-sensor (panoramic scene analysis PSA) system is proposed for surveillance applications. In the proposed set-up, an omnidirectional imaging device is used in conjunction with a pan tilt zoom (PTZ) camera leading to an innovative kind of sensor that is able to automatically track at a higher zoom level any moving object within the guarded area. In particular, the catadioptric sensor is calibrated and used in order to track every single moving object within its 360 degree field of view. Omnidirectional image portions are eventually rectified and pan, tilt and zoom parameters of the moving camera are automatically adjusted by the system in order to track detected objects. In addition a co-operative strategy was developed for the selection of the object to be tracked by the PTZ sensor in the case of multiple targets. 相似文献
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The Letter presents a real-time surveillance system able to localise and track multiple unknown objects (e.g. trunks, trash compactors, etc.) moving simultaneously in a sanitary landfill. Elementary features of moving image areas are used for object localisation, and a network of extended Kalman filters is applied for multiple object tracking 相似文献
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Video object tracking using adaptive Kalman filter 总被引:1,自引:0,他引:1
Shiuh-Ku Chung-Ming Shu-Kang 《Journal of Visual Communication and Image Representation》2006,17(6):1190-1208
In this paper, a new video moving object tracking method is proposed. In initialization, a moving object selected by the user is segmented and the dominant color is extracted from the segmented target. In tracking step, a motion model is constructed to set the system model of adaptive Kalman filter firstly. Then, the dominant color of the moving object in HSI color space will be used as feature to detect the moving object in the consecutive video frames. The detected result is fed back as the measurement of adaptive Kalman filter and the estimate parameters of adaptive Kalman filter are adjusted by occlusion ratio adaptively. The proposed method has the robust ability to track the moving object in the consecutive frames under some kinds of real-world complex situations such as the moving object disappearing totally or partially due to occlusion by other ones, fast moving object, changing lighting, changing the direction and orientation of the moving object, and changing the velocity of moving object suddenly. The proposed method is an efficient video object tracking algorithm. 相似文献
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Consider a database that represents and manages the information about moving objects and their locations such as the material delivery system, the communication is vital and constant among the database (delivery center), the moving objects (the material on road) and database application users (the owner of the material). We need to establish the new model for moving objects such as location model, indexing, dynamic attributes, spatial and temporal query, etc. in database management system (DBM… 相似文献
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本文研究了基于计算机视觉技术的智能监控系统教学实验平台.文章介绍了该实验平台的硬件部分设计和构建,研究了基于该平台的运动目标检测方法和人与非人的识别方法、基于形心的运动目标跟踪方法,尤其研究得到了基于最小二乘法的预测跟踪算法和基于面积变化的预铡跟踪有遮挡运动目标新方法.实验结果表明该平台满足了计算机视觉课程的教学实践需要. 相似文献
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本文提出了一种用于三维空间直线航迹起始的集中式Hough变换法.基于三维直线的Roberts表示法,设计了Roberts参数相似性判决的假设检验方法.通过对多传感器点迹的随机采样,计算每次采样确定的直线Roberts参数,然后以相似性测度实现Roberts参数的合并,当参数累积超过规定的门限后能可靠地起始一条直线航迹.为了减少无意义的随机采样和不合理的Roberts参数合并,在算法实时过程中适时地检查目标运动速度限制,加快了采样速度,减少了航迹误起始的概率.通过仿真,该算法能适应多传感器多目标环境中传感器数据更新率不同和密集杂波、强干扰的复杂情况. 相似文献