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In this paper, Gray code and line shifting structure light were projected to the object. Then the distortion images were got which can reconstruct the 3D model: The images space was divvied into 64 cycles by six sequence image the acquisition, the whole scanning plane has been covered by the mobile fringes, which has been cycled 20 times. With the parameters of two calibration cameras , the image pixels has been matched by the principle of geometry.

本论文的主要研究内容是利用格雷码加线移结构光对物体进行投影，再经摄像机采集到畸变的图像，结合相关算法以实现对物体的三维重构：摄像机采集到的6幅图像序列形成的格雷码将图像空间划分为64个周期，通过20次线条纹的移动完成对整个扫描平面的覆盖，在已获得两摄像机标定参数基础上，结合对极几何原理完成左右图像像素点的匹配。

First, according various data to design the hardware circuit and software of MCU to realize incepting of code and transmitting of serial port.

通过分析各种红外遥控器的编码方式、码型结构、码流传输原理，完成对整个系统的设计研制。

The invention discloses a digital good transaction system and the method. It mainly carries on coding process to at least one digital good in a content downloading center into a coded digital good, and the coded digital good will be transmitted to at least one content downloading station with real memory transmission path, when the consumer selects a digital good, the user can uses a content downloading card into a content downloading station, uses a reality transmission path to store the digital good to be purchased, and uses a network transmission wire to connect the content downloading center, the center incriminates the card number in order to generate a card number decoding data, and download the decoding data into a content downloading card, when the consumer want toe buy a digital good, the content can be downloaded into a content card reader, and the reader incriminate the card number to reduces the decoded data and the digital good, in order to generate the digital good which can be read and used.

本发明公开了一种数字商品交易系统及其交易方法，其主要是将至少一数字商品在一内容下载中心进行加密处理以成为一加密数字商品，而加密数字商品将以实际的储存器传递线路以直接送到至少一内容下载点中，当消费者选定一欲购买数字商品时，可持一内容下载卡至其中一内容下载点，利用一实体传输线路直接储存所欲购买的加密数字商品，并藉由一网络传输线路以连接内容下载中心，内容下载中心将根据卡号识别码以产生一卡号解密资料，并将卡号解密资料下载至内容下载卡，当消费者欲使用欲购买数字商品时，即可将内容下载卡置入一内容卡片阅读机中，而内容卡片阅读机将根据卡号识别码以还原卡号解密资料及加密数字商品，以产生可供读取使用的数字商品。

In this paper, a low complexity and memory-efficient concatenated codes called Parallel Interleaved Concatenated Gallager Codes are presented.

本文提出了一种具有低复杂度和低存储需求的并行级联码—并行交织级联Gallager码。

cyclic redundancy check code is a very important cyclic code,the coding and decoding methods are simple,easy to realize.it is strong to detect error,the probability of misjudging is nearly zero.it is a method with extremely high efficiency in controlling errors,which can fulfill the requirement of reliable information transmission in communication systems.it has got very extensive application in observing and controlling and data communication.this paper introduces the encoding and decoding principle of crc in detail,analyzes the feasibility of crc by dsp,and gives out the design proposal and flow chart according to the principle,which is very useful in applications.

摘 要：循环冗余校验码是一种重要的循环码，编码和解码方法简单，容易实现，检错能力强，误判概率几乎为零，是一种效率极高的差错控制方法，可以满足通信系统可靠传送信息的要求，在测控及数据通信中得到了非常广泛的应用。详细介绍了循环冗余校验的编解码原理，分析了用dsp实现crc的合理性，最后给出了根据校验原理实现的设计思想及流程图，具有一定的实用价值。

Experimental results show that the new method is more robust and achieves good performance in both quality and complexity.

实验证明，此算法具有更强的鲁棒性和更广泛的适用性，在转码后的视频质量和转码速度方面都达到了很好的效果。

By this means, a retransmission signal spread by means of many spreading codes is code division multiplexed.

由此，在加法部(108)就可以随着重发次数的增加，对被多个扩频码扩频的重发信号进行码分复用。

In terms of channel coding, a frame-level unequal error protection scheme and performance estimation model for wireless video transmission is proposed, and a novel algorithm for video data packeting is presented.

利用这些预测公式，通过少量计算便可以较为准确的预测H.264输出码流的码率和恢复质量；在信道传输方面，本文主要提出了一种帧级不平等保护策略及其编码质量的预测算法以及一种新型的数据打包方法。

The most important role this chapter plays lies on the five new ideas the author presents to reduce coding, packeting and queuing delays.

然后讨论了语音在ATM和IP网络中传输的码流适配方法、CBR和VBR码流的适配时延问题。

They pawed their blouses, both of black satin, two and nine a yard, waiting for their teas to draw, and two and seven.

她们各自摆弄着身上的衬衫，那都是黑缎子做的：一件是两先令九便士一码，另一件是两先令七便士一码的。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。