查询词典 tracker

In this paper, the theory, algorithm, and experiment of automatic object detection and tracking are studied in depth. It is firstly pointed out that the essential of Mean Shift method is a special Newton-Gaussian method. A new method named Fast Mean Shift is established to stretch the conservative step of Mean Shift method. The convergence and validity of this new method are proved in theory. And it is also proved that the convergence speed of Fast Mean Shift is faster than that of Mean Shift. The contrast experiments of searching the maximum possibility density of random of data sets in plane and 3D space are done. The results show that this new method can reduce the iterations greatly. A new object tracking method based on Fast Mean Shift is built to improve the object tracking performance, which is shown in the face tracking experiment with the tennis sequence provided by the Ohio State University, and the car tracking experiment with the car sequence provided by Kalsruhe University. The face trcking experiment with highly noised images show that the object tracking method based on Fast Mean Shift has strong anti-jamming ability. A new fast color object detection technology based on characteristic color is established, which use characteristic color distribution to compute the characteristic color vector of any area in an image quickly. With the high performance search method, the fast object detection is achieved. At last, using object tracker based on Fast Mean Shift and color object detector based on characteristic color with the Kalman filter, PID controller, searial communication and other technologies, automatic object detection and tracking system with control system is built. The availability and anti-jamming ability of this system are verified by some object detection and tracking tests in different scenes.

本文对目标自动识别与跟踪进行了理论、计算、试验三方面的深入研究，主要包括：首次指出了目标跟踪技术中常用的均值迁移方法的本质为一种特殊的高斯-牛顿方法，改进了均值迁移方法步长取值保守的弱点，建立了快速均值迁移方法，证明了该方法的收敛性、有效性以及收敛速度优于均值迁移方法；进行了平面和3维随机分布数据集的最大概率密度搜索对比试验，试验结果表明，快速均值迁移方法大大减少了迭代次数；建立了基于快速均值迁移的目标跟踪方法，利用俄亥俄州立大学提供的乒乓球序列图像和卡斯鲁厄大学的汽车序列图像，对人脸和汽车目标跟踪性能分别进行了对比试验，并进行了高噪声人脸图像目标跟踪试验，结果表明，基于快速均值迁移的目标跟踪方法有效提高了目标跟踪性能，具有很强的抗干扰能力；建立了一种新型彩色目标自动识别方法，采用特征色彩分布函数实现了对任意图像区域特征色彩矢量的快速计算，建立了高效的搜索方法，实现了彩色目标的快速识别；将基于快速均值迁移方法的目标跟踪方法、基于特征色彩的目标识别方法与卡尔曼滤波、PID控制、串行通讯等技术结合，建立了带有控制系统的快速目标自动识别与跟踪系统，并在不同场景下进行了目标自动识别与跟踪试验，验证了快速目标自动识别与跟踪系统的有效性和抗干扰能力。

For each tracker, the approach takes the mean shift vector as the observation.

该方法针对每个跟踪器，将均值漂移向量作为卡尔曼滤波器的观测值，能够大大提高跟踪速度。

The core of this algorithm is an object tracker that tracks multiple nonrigid objects using an appearancebased tracking method. The initial model is derived automatically and a new model update method based on the concept of the moving connected components is proposed.

算法的核心是一个对象跟踪器，它利用一种基于对象行为的跟踪算法对多个非刚体目标有效地进行对象跟踪，并与后续帧进行匹配，然后采用一种基于运动相连成分的模型刷新方法对模型的每一帧进行刷新。

In this thesis, the measure principle of outer trajectory of the TV tracker is introduced and the influence of the roll, pitch and yaw rotation to the LOS is analyzed in detail.

本文简要介绍了电视跟踪仪外弹道测量原理，详细分析了船体横摇、纵摇和艏摇运动对电视跟踪仪跟踪性能的影响。

Regression, back-skipping, and the duration of fixations can be minimized by using a tracker and pacer.

利用跟踪器和定速器尽量减少有意识和无意识回读，缩短注视持续时间。

Practice using the pen as a tracker and pacer.

练习用笔作追踪器和定速器。

Point focus parabolic dish with Stirling engine and its solar tracker at Plataforma Solar de Almería in Spain.

点集中抛碟与斯特林发动机和太阳能跟踪平台上的太阳能阿尔梅里亚在西班牙

When a single altitude tracker is used, it is best to locate the observation post at a distance perpendicular to the wind direction.

当一个单一的海拔高度是用来跟踪，最好是找到观察哨在距离垂直于风向。

Reconstruction has been made on an eccentric plier which is the only such machine of Russian made in the 1950s still remaining in China by computer control of which the model for speed tracker algorithm and dynamic correction is presented in the paper.

针对国内现存的唯一一台50年代苏联制偏心式飞剪机改造，给出了相应的速度跟踪算法及动态修正模型，以便在连续工作方式下实现准确切头和切定尺。

For a nodeless page example, please go to Pragma Issue Tracker

对于无节点页的例子，请到语用问题跟踪

If you are unfortunate enough to the lovelorn, please tell me, I will help you out, really, please contact me!

如果你不幸失恋了，请告诉我，我会帮助你摆脱困境，真的，请联系我啦！

China's plan to cut energy intensity by 20 percent and pollutant discharges by 10 percent between 2006 and 2010 is a case in point.

中国计划在2006年到2010间降低20%的能源强度和减少10%的主要污染物排放，就是一个这样的例子。