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watermarkt1
- 基于小波零树特性的视觉感知度模型的优化方案, 给出了两种水印算法: 一种算法嵌入的是高斯序列水印, 通过相关检测实现盲检测 另一种算法嵌入的是二值图像水印, 水印的提取是非盲提取。这两种算法在所有重要小波系数( 包括最低频系数) 中嵌入水印, 以达到最大化水印嵌入量的目的, 并结合感知度模型在水印的透明性和鲁棒性之间实现了较好的平衡, 对于常见的图像处理操作, 特别是对于JPEG 和小波压缩均有较好的鲁棒性。-based on wavelet zerotree visual perception
watermaking
- 一个用DCT的数字水印毕业论文。本文重点研究了基于DCT的低频水印算法、基于DCT的中频水印算法和基于DCT的自适应视频水印方案。-DCT with a digital watermark dissertation. This paper focuses on the low-frequency DCT-based watermarking algorithm, IF DCT-based watermarking algorithms and DCT-based Adaptive Video W
低频数字相位测量仪
- 设计了一个基于现场可编程门阵列（FPGA）和AT89S51单片机相结合的低频数字相位测量仪,The paper has designed a low frequency digital phase measuring instrument based on the system which communicates FPGA and the microcontroller (AT89S51).
SVPWM
- 变频驱动主要使用的驱动波形主要有SPWM和SVPWM两种。SPWM原理简单、实现容易,是现在使用最广的一种变频驱动波形。但其有一个致命的弱点是其电源利用率不高（只有86％）、谐波成分大。因此,在新近开发的产品中其应用逐渐被性能优异的SVPWM所取代。SVPWM是一种电压利用率、低谐波成分的变频驱动波形,还有开关次数少、功率管功耗小等特点。同时,SVPWM还能很好的结合矢量控制算法、以最大限度的发挥设备的性能。因此被越来越多的变频设备所采用。-The main use of variable f
Spectraldecomposition
- 瞬时谱估计，用于检测低频油气特性，有助于地层油气识别。-Instantaneous spectrum estimation for detecting low-frequency oil and gas properties, help to identify the formation of oil and gas.
8-bitmicrocontrollerbasedonthefrequencyofdesign.ra
- 基于89C51单片机技术，介绍了一种数字式频率计数器，该频率计具有操作简单方便、响应速度快、体积小等一系列优点。可以及时准确地测量低频信号的频率。-Based on the 89C51 single-chip technology, introduces a digital frequency counter, the frequency meter is simple convenient, fast response, a series of advantages of small size
Signal-generator5
- 用AT89C51实现超低频任意函数发生器，使用单片机为主控制器-By AT89C51 to achieve ultra-low frequency arbitrary function generator
paper3
- 微处理器控制有源带通滤波器_一种数字与模拟_省略_相混合的低频带通中心频率可编程-Microprocessor-controlled active band-pass filter of a digital and analog _ _ _ omitted with a mixture of low-frequency band-pass center frequency programmable
AT89S52MCU-basedlow-frequencysignalgenerator
- AT89S52 MCU-based low-frequency signal generator-Low-frequency signal generator
BW-Estimation
- A paper about band width estimation in Electronic circuit . It will be use full for handy estimation(without any software) of band width (low frequency and high frequency)
SimultaneousObservation
- Very Low Frequency (VLF) spectrograms show sometimes sets of lines called MLR (Magnetospheric Line Radiation) with frequency spacing close to 50 or 60 Hz. It is very tempting to attribute these MLR to Power Line Harmonic Radiation (PLHR). PLH
NFPSS
- These set of programs are written to design a robust power system stabilizer for minimizing the effects of low frequency oscillations in electric power systems. A complete nonlinear model of the power system represented by a single machine connected
startingdirctlyfromthesource
- 直接光是从光源出发，直接照射到物体表面，由于物体问的遮挡和光源照射范围等因素，直接光照变化非常剧烈，分布很不均匀。而间接光照是由直接光照射到物体表面后，经过多次反射、折射产生的，因此。每个方向都有来自环境的间接光照，而且在空间的分布比较均匀，没有剧烈的变化，属于光照中的低频成分。由直接光照和间接光照产生的物体表面的光照效果可以统一表示为-Just starting directly from the source, direct exposure to the surface, due to o
vm
- Owing to the broad application value of audio watermarking in remote transmission and mobile extraction, it is very important to study watermarking approaches against A/D and D/A conversion. Based on wavelet decomposition and cepstrum technol
amorph
- Owing to the broad application value of audio watermarking in remote transmission and mobile extraction, it is very important to study watermarking approaches against A/D and D/A conversion. Based on wavelet decomposition and cepstrum technol
vm2
- Owing to the broad application value of audio watermarking in remote transmission and mobile extraction, it is very important to study watermarking approaches against A/D and D/A conversion. Based on wavelet decomposition and cepstrum technol
amethodforimagefusion
- 文中的方法是把图像分块，小波分解得到低频分量、高频分量，然后计算每一块的对比度，把图像块划分为清晰块、模糊块，把清晰块和模糊块相邻的区域定义为边界区域，融合时，直接选取清晰块作为融合后的相应块，对于边界区域，在小波分解的基础上采用基于对比度的像素选取的方法进行处理。-Paper, the method is to image segmentation, wavelet decomposition are low frequency, high frequency components, then
DTMFGenerator
- 量化DTMF的高频群和低频群正弦信号的XSW步长-DTMF high frequency group and quantify low-frequency sinusoidal signal XSW group step
Basn
- 超低频电磁波的非接触式参数设置系统设计Based on ultra-low frequency electromagnetic parameters of non-contact design-Based on ultra-low frequency electromagnetic parameters of non-contact design
Frequency-detection
- 频率细化技术在超低频/极低频电磁信号检测中的应用-Frequency refinement technique in ELF/low frequency electromagnetic signal detection