查询词典 tracking ball

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For getting the major characteristic edges without confusions by undesired structures like muscle edges, we integrate a star-like edge detection filter named "Asterisk Filter" with the Canny Edge Detection in the image preprocessing. In addition, we also propose a new contour tracking method named "One-Pixel Rolling Ball Contour Tracking" for getting the boundary information in a binary image which is a link-list data structure. Instead of using a regression curvature estimator, PCA is used for better curvature estimation from a discrete bony contour.

为了从影像上取得骨头特徵边缘，将不重要的肌肉视为杂讯滤除，我们引用一种星形滤波器－Asterisk Filter，搭配Canny边缘检测法，做为这类影像的前处理；另外，为了将骨头的边缘精确地追踪出来，我们提出滚球边界追踪法，来对二值化影像进行边缘追踪，藉此获得边缘的串列资料结构；我们采用以主成分分析(Principle Component Analysis，简称PCA)取代原本以回归方法来计算的曲率，以取得更佳的曲率估测值，其可提高计算之参数的准确性。

Tracking moving objects, in a single context can track the path of the ball movement.

运动物体的跟踪，在单一背景下可以跟踪球运动的轨迹。

The results reveal that the performance of the glove mouse with virtual tracking ball is almost as twice the performance of the touch pad or track point.

此结果显示本研究之虚拟追踪球手套滑鼠对於行动装置的需求上，具有相当程度之适用性以及发展性。

ANDY RODDICK: There's guys who are consistent, but then there's guys who are consistent when running across the court as fast as they shot tracking down a ball that you've hit as hard as you can, putting it back in play in an effective position.

ANDY：有些人是一贯这样的，但是还有些人总是在赛场上尽量快地跑动以回击你大力打出的球，使他们回到有效的位置。

Able to change his grip to adjust with bounces – even when forced able to slice the old-school squash shot with underspin – Federer's mechanics are at once austere and elegant. His head is always balanced, his eyes tracking the ball keenly, his feet rarely out of position.

能够通过改变握拍来适应不同来球——即便是处于被动，也可以击出下旋球来打开局面，他的击球既严谨又优雅，他的头始终保持平衡，眼睛盯准来球，步伐总是在最合适的击球位置。

Firstly this paper analyses and compares to the methods of target tracking and telemetry in common use, selects and uses the telemetry system that called'reversed GPS', aiming at the difficulties and challenge of ball cartridge examination and reclaim in these circs that the falling point distribution is random and wide extension, or deviates from the Hpredetermined ballistic trajectory and falling on the midway because of multi-target and long-distance aviation in experimental aviation based on traditional radio directional bearing.

结合课题研究背景，本文首先分析和比较了目前常用目标跟踪和定位方法的优缺点以及针对传统无线电定位技术在做飞行测试试验时由于目标飞行距离远、目标数量多导致的目标落点随机散布、范围广和偏离预定弹道、中途坠落等情况下给实弹试验测试和试验弹回收带来的困难与挑战，选用了&倒GPS&遥测系统作为测试测量方案。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。