传统的条码识别方法是通过二阶导数零交叉来定位条码边界。
Traditionally, the method of bar code recognition is based on zero crossing of the second derivative.
并利用其曲率函数的零交叉指纹图的交汇点建立相应的二元树。
Then it makes use of the crossing points of the zero-crossing fingerprint graph of the curvature to establish the corresponding binary tree.
拉普拉斯算子的方法是在图像的二阶导数搜索零交叉来查找边缘。
The Laplacian method searches for zero crossings in the second derivative of the image to find edges.
分析了信号零交叉表示方法，给出了新的由零交叉表示进行原始信号重构的算法。
Wavelet zero crossing representation is investigated. A new and simple method of reconstructing signal from its wavelet zero crossing representation is given.
基于此函数的小波变换零交叉表示和匹配过程，得到了识别轴心轨迹的一种新方法。
Based on zero crossing representation of wavelet transform of this radial function and matching procedure, a new algorithm to identify orbits of shaft centerline is proposed.
本文中，在接近零交叉点附近的控制畸变被放大，提出了一种减小这种畸变的方法。
In this paper, the control distortion near the zero crossing point is magnified; a method to minimize the distortion is proposed.
如果电压变化需要选择不同的自来水，新的电子开关水龙头恰恰是在零交叉，以避免扭曲的交流波形。
If a voltage change requires that a different tap be selected, the new tap is electronically switched in precisely at the zero-crossing, to avoid distorting the AC waveform.
该定位系统采用波头计数与零交叉点检测的方法来提高超声测距精度，并通过三角形方法来实现三维定位。
This method enhanced the measuring accuracy by using the methods of wave head counting and zero-cross detection, and it implemented 3-d positioning with triangle square wave.
本文基于数学样条理论提出了一种新的多尺度小波变换，通过其模极值或零交叉可以有效地提取信号的特征。
Based on the B-Spline theory, this paper present a new kind of multi-scale wavelet transform. The feature of a signal can be extracted in its maximum module or zero-crossing.
使用零调制解调器连接时，发送线和接收线要交叉连接。
With a null modem connection, the transmit and receive lines are cross-linked.
国家可通过交叉补贴或提高零售价格来减轻中国石化的负担。
The state can lessen Sinopec's load through cross-subsidies or by lifting retail prices.
尽管Addison -Wesley主要的销售来自于零售市场，o' Brien也从学术界开发这些书籍交叉的潜力。
Although the majority of AW's sales are in the retail market, o 'brien also exploits the books' "crossover" potential for academia.
注意有几个零售种类交叉的不同属性的一些交迭。
As noted, there are some overlaps in the various attributes across several retail classes.
在机器起动之前，零件的重新装放设置了由另一个作业员完成的相互交叉检查之动作?。
Is there a log signed by the set-up operator and countersigned by the cross check operator before start-up?
来自零售商“禁忌星球”的丹妮·韦尔说：“该漫画找准了定位，是一次有趣的交叉融合。”
Danie Ware, from retailer Forbidden Planet, said the manga series was "pitched just right", and an "interesting crossover".
目的探讨间歇性外斜视患者手术前后近零视差、交叉视差及非交叉视差的临床变化规律。
Objective To understand the clinical variety of zero disparity, crossed disparity and uncrossed disparity in intermittent exotropia before and after strabismus surgery.
交叉耦合滤波器的综合从给定的传输零点和回波损耗出发，直到得到各腔体之间的耦合系数。
The synthesis of the cross coupled filter is from prescribed transmission zeros and return loss till the attainment of the coupling matrix of each cavity.
零线电流零线电流指的是通过并联系统零线的电流，在谈及环流电流或者交叉电流时常会提到这个术语。
Neutral current neutral current is the current that flows in the neutral leg of a paralleling system. Often, this term is used in reference to circulating currents or cross currents.
在交叉支撑装置中的另一个重要零件——锁紧板的制造工艺中，采用了冲头保护装置，解决了失稳折断问题。
In the manufacturing of the lock plate as an important part placed in the crossing support device, we solved the problem of die breaking by using of stroke protecting device.
此外，故障电压行波于非对称短路点发生线模与零模行波相互交叉透射，致使故障电压自然频率“混叠”。
In addition, line mode and zero-mode voltage wave cross each other at the point of fault which causes the natural frequency "aliasing".
间歇性外斜视患者视差的损害顺序依次为非交叉视差、交叉视差、近零视差。
The sequential damage of stereopsis in intermittent exotropia is uncrossed disparity, crossed disparity and zero disparity.
从图中可看出，给定射线与其路径中的段的交叉值总和是零。
As can be seen from the illustration, the sum of the values from a given ray crossing the segments in its path is zero.
这种生产与出口电视节目的公司在伦敦零星遍布于国王交叉口和樱草山。
The companies that produce and export television formats are scattered around London, in odd places like King's Cross and Primrose Hill.
由于这种类型的微带滤波器实现传输零点不需要通过滤波器非相邻谐振器间的交叉耦合来获得，因此，设计过程非常简单。
As this kind of microstrip hairpin filter does not require cross coupling between the non-adjacent resonators of the filter to obtain transmission zero, the design procedure of the filter is simple.
与轴向有关的交叉动特性系数不等于零，说明径推联合轴承轴承径向和轴承轴向之间是相互影响的；
Intercrossed dynamic characteristics related to the axis are not equal to zero, which illustrates that the axial of radial-thrust hybrid bearing has a relationship with the radial of it.
来到四十五街和百老汇大街交叉口，站在那间零售店的书刊柜台前看看陈列品也可散散心。
It was a momentary diversion to stand in front of the book counter in the drugstore at Forty-fifth street and Broadway and look at the books.
实践表明，冻结法是软土中地铁站零距离交叉穿越施工的可靠工法。
The monitored impact shows that the ground freezing method is a reliable construction way to cross seamlessly a metro station in soft soil during execution of a cross-over project.
交叉复合弯销与液压抽拔交叉型芯压铸模结构，用于压铸带内侧凹的杯形零件。
A die casting die with pumping crossed cores by crossed compound dog-led cams and hydraulic pressure is used for cupulate parts with inboard concave.
交叉复合弯销与液压抽拔交叉型芯压铸模结构，用于压铸带内侧凹的杯形零件。
A die casting die with pumping crossed cores by crossed compound dog-led cams and hydraulic pressure is used for cupulate parts with inboard concave.
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