zero cross

By using zero normalized cross correlation similarity measure feature points, and preliminary matching, using the uniqueness of matching constraint and disparity gradient constraint, remove the wrong match points to precisely match.

通过采用归一化零互相关系数度量特征点的相似性，进行初步的粗匹配，采用视差梯度约束、唯一性约束去除错误的匹配点，达到精确匹配的目的。

However, a comparative study of share from the perspective of cross-cultural is less involved; especially the sharing behavior of different ethnic and cultural backgrounds is almost zero.

但是，从跨文化的角度对分享进行比较研究较少涉及，特别是不同民族文化背景下的分享行为研究几乎为零。

The author introduced a new cross-zero trigger in this article.

介绍了一种新型过零触发器，电路简单、性能优越。

A static hysteresis loop test instrumentation is developed, detecting pulse peak by method of cross-zero of pulse peak after differential, acquiring data by microcontroller, displaying hysteresis loop by graphic LCD The test instrumentation has advantages of simple circuit, accurate measurement and visual result.

用脉冲峰值微分过零法检测峰值，单片机采集数据，图形液晶显示磁滞回线，研制静态磁滞回线测试仪，电路简洁，测量准确，结果直观。

Using electron switch by BTA, BTA at touch off cross zero, thus deferent electron sine wave is intact.

用双向晶闸管作为电子开关，双向晶闸管过零触发，因而输出的是完整的正弦波。

As for the part of software, Current and voltage zero cross detection circuit, synchronism signal detection circuit, Current and voltage detection circuit and CAN bus interface circuit and so on are designed.

硬件部分主要对电流电压检测电路，同步信号检测电路，电流电压过零检测电路，CAN总线接口电路等进行了设计。

Microprocessor controlled Inconstant Cycle Zero cross over Triggering Circuit for Thyristor

微机控制的晶闸管变周期过零触发电路

Intelligent zero-cross-switching shunt capacitor compensation system in electrified railway traction substation

牵引变电所智能过零投切补偿系统的研究与开发

This paper describes a software filtering method for eliminating industrial frequency interference in ordinary industrial process control with the aid of zero cross detection circuits. A detailed account of the filtering theory and its application is also given.

本文介绍了一种在一般工业过程控制中借助于过零检测电路来实现滤除工频干扰的软件滤波方法，阐述了其滤波原理与应用。

Using electron switch touch off cross zero , thus deferent electron sine wave is intact.

用双向晶闸管作为电子开关,双向晶闸管过零触发, 因而输出的是完整的正弦波.