数字系数

The method includes steps: digital watermark technique is adopted to hide information of key data in not key data codes of compressed image; under protection of digital watermark, using protective backup for key data detects whether normal transmitted key data is correct or not so as to detect error code; carrying out cyclic mutual backup by using macro blocks in same positions in front and back macro block set; embedding coded motion vector in form of digital watermark to DCT transformation coefficient, and ensuring that video data are not influenced as best as one can; when error code occurs, if key data backup is correct, then the backup replaces former key data; otherwise, using mean value of key data in adjacent macro blocks within same frame to replace former key data approximately.

本发明中，采用数字水印技术在压缩图像的非关键数据编码中隐藏关键数据信息；通过数字水印保护下的关键数据保护备份来检测正常传输的关键数据是否正确，由此来检测传输误码；用前后宏块组中相同位置的宏块进行循环相互备份；对运动向量进行编码，然后以数字水印的形式嵌入到相对不重要的DCT变换系数中，同时保证视频数据尽量不受影响；在误码发生时，如果关键数据备份正确，则直接替代原关键数据，否则用同一帧内相邻宏块的关键数据的平均值近似替代原关键数据。

Use several function design some universal digital filter, get the coefficient of digital filter, prepare the prophase task of design a digital filter base on DSP.

并采用了相关的函数设计了几款常用的FIR数字滤波器，并得到了滤波器的相关系数，为利用DSP实现数字滤波做好了一些前期的工作。

Useseveral function design some universal digital filter, get thecoefficient of digital filter, prepare the prophase task of designa digital filter base on DSP.

并采用了相关的函数设计了几款常用的FIR数字滤波器，并得到了滤波器的相关系数，为利用DSP实现数字滤波做好了一些前期的工作。

Lommel functions was used to represent the coefficients of ideal digital fractional differentiator, according to the relationship between two kinds of Lommel functions and the basic properties they each has, a new fast algorithm for coefficients of ideal digital fractional differentiator was presented.

利用Lommel函数表示理想数字分数微分器的系数，根据两类Lommel函数之间的关系和它们各自的基本性质给出理想数字分数微分器系数的一种新的快速算法。

It is difficult to compute directly the coefficients from the integral formula, since the integral function in the formula of the ideal digital fractional differentiator is a high-order oscillating function.

从理想数字分数微分器系数计算公式的特点考虑，利用变量代换把积分函数中的振荡因子转换成积分上限，避免高阶振荡函数积分计算，给出了计算分数微分器系数的递推公式。

At this text I bring forward effective project strategy of non-maturity haleness watermark model arithmetic. Making use of time-frequency local characteristic of wavelet switch, I bring forward digital image watermark insetting project basing on block of wavelet switch, at the first ,make the image disporting to block of 8×8,then make use of the characteristic of Haar wavelet switch,then make the image the second layer wavelet switch and carry through power modulus transaction.

本文提出了非完备性鲁棒性数字水印典型算法中的行之有效的设计策略，利用小波变换良好的时频局部特性，提出了基于块的小波变换的数字图像水印嵌入方案，把宿主图像分为8×8的小块，利用 Haar小波变换的特性，对图像进行二层小波变换分解，对变换系数进行权重处理，然后把每一个水印象素隐藏在相应的图像块的中低频小波系数之中，提高了数字水印的隐蔽性和鲁棒性。

SVD is used to extract singular value which is embedded copyright protection into digital audio based on modular arithmetic.

将数字音频信号用奇异值分解所得的奇异值作为水印的嵌入系数，对该系数采取模2取余的方法作为水印嵌入策略。

The canopy structure and leaf morphological characters of 4 sugarcane genotypes at different leaf layers on seedling were studied by using CI-100 plant canopy instrument and CI-203 area meter instrument. The results showed the leaf morphological parameters, canopy structure and radiation transmission at different leaf layers were notably different among different genotypes. The variation of Ila, Amfi, Dl at different leaf layers were mainly caused by the leaf width at relevant position. The variation of K at different leaf layers was related to Amfi and Dl. The variation of Td（transm. coef. for diffuse penetration）had significant correlations with Ila, Amfi and Dl. The variation of Tr（transm. coef. for radiation penetration）had significant correlations with Dl, leaf width and the ratio of leaf length to width. The variation of Par had significant correlations with Ila, leaf area, leaf width and the ratio of leaf length to width.

摘要利用CI-100数字植物冠层分析仪和CI-203叶面积分析仪测定了4个甘蔗品种不同叶位层的冠层参数和相应叶位叶片的形态特征，结果表明：不同基因型不同叶位层间叶片形态、冠层空间结构和冠层辐射特征存在显著差异，不同叶位层叶面积指数、叶簇倾角和叶分布的变化主要由冠层内不同叶位叶片叶宽的变化引起，而不同叶位层消光系数的变化主要与叶簇倾角和叶分布有关；散射光透过系数的变化主要与叶面积指数、叶簇倾角和叶分布有关，直射光透过系数的变化主要与叶分布、叶宽、长宽比有关，光合有效辐射的变化与叶面积指数、叶面积、叶宽、长宽比有关。

For image enhancement of digital radiography, the traditional processing methods originally used in various tomographic imaging modalities aren't available for enhancing the digital radiographic images, especially for the digital chest images because of the wide dynamic range of information between x-ray emerging from the heavily attenuated mediastinum (heart, spine, aorta, and other central features on the radiography) and subdiaphragmatic area and those that have passed through the air- filled lung.

对于数字放射图象的增强，原先用于CT等各种断层医学数字图象的传统处理方法并不能获得满意的效果，尤其对于数字放射胸片图象。其原因在于放射胸片图象具有相对较宽的信息动态范围，从具有非常大吸收系数的纵隔区（放射上指脊柱，心脏，主动脉）及下隔膜区到X线极易穿透的充满空气的肺部。

A new algorithm of discrimination between inrush currentand fault currentof transformer is brought forward based on self- correlation analysis,which is to calculate self- correlation coefficients of variant periods after analyzing the sam pling data and then discrim inate between inrush current and fault current by using the m agnitudes of the calculated coefficients.

提出一种利用数字信号处理中的相关函数的基本概念，对采样数据进行分析，计算采样数据在不同时段上的自相关系数，利用自相关系数的大小来区分变压器励磁涌流和内部故障差流的新方法。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。