Description: 本文实现了利用B样条函数对图象插值放大的快速算法，并在此基础上，进一步提出了彩色图象放大的方案，既先将图象从RGB空间转换到YUV空间，对UV分量插值放大后进行低通滤波处理，最后再将图象转换至RGB空间。实验结果显示了该方法插值效果好并且处理时间短。-In this paper, the realization of the use of B-spline function of image interpolation to enlarge the fast algorithm, and on this basis, and further put forward a color image to enlarge the program, both the first image space conversion from RGB to YUV space, the weight of the UV Interpolation amplified low-pass filter processing, the final image and then convert to RGB space. The results show that the method of interpolation better and shorter processing time. Platform: |
Size: 217088 |
Author:jack |
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Description: 对基带数字通信的位同步过程进行了仿真，采用Gardner算法，没有用插值。符号用SRRC进行脉冲成形，环路滤波器没有用PI回路，是简单的alfa，1-alfa低通滤波，NCO调整也比较简单。-Baseband digital communications for the bit synchronization process of the simulation, using Gardner algorithm, did not use interpolation. Carried out with SRRC pulse shaping symbols, did not use PI loop filter circuit is a simple alfa ,1-alfa low-pass filter, NCO is also relatively simple to adjust. Platform: |
Size: 1024 |
Author:鲁信 |
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Description: 方法引入低通掩膜算子在空域对降采样前的图像做滤波预处理,抑制欠采样噪声.系统...频谱混叠.实验证明,此算法基本能达到预滤波插值算法的处理效果.-Method of introduction of a low-pass mask operator in the airspace of the down-sampling the image before filtering to do pre-processing, noise suppression due to sampling. The system ... the spectrum aliasing. Experiments show that this algorithm is essential to achieve the pre-filter interpolation algorithm of the treatment effect. Platform: |
Size: 108544 |
Author:建东 |
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Description: 利用低通滤波器对图像进行插值放大：按放大的倍数对原图像进行插零，插零后的图片与低通滤波函数进行卷积，原先插入的零的位置自动替换为适当的插值，如此图像就已经插值放大了，图像质量还不错。-Double the number of pixels of each row and column by adding a zero value pixel between each pixel of the image.Then operate with two kinds of low-pass filters to get the enlarged image. Platform: |
Size: 68608 |
Author:段玉霞 |
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Description: 图像的双线性插值放大算法中，目标图像中新创造的象素值，是由源图像位
置在它附近的2*2 区域4 个邻近象素的值通过加权平均计算得出的。 双线性内插
值算法放大后的图像质量较高，不会出现像素值不连续的的情况。然而次算法具
有低通滤波器的性质，使高频分量受损，所以可能会使图像轮廓在一定程度上变
得模糊。 -Bilinear interpolation algorithm to enlarge the image, the target image in the newly created pixel value is determined by the source image position in its area near the 4 2* 2 the value of neighboring pixels calculated by the weighted average. Bilinear interpolation algorithm to enlarge the image quality after the high pixel value does not appear the situation is not continuous. However, sub-algorithm has low-pass filter nature of the damage to the high frequency components, it may make the image contour to some extent become blurred. Platform: |
Size: 332800 |
Author:chenjun |
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Description: 代码用两种方法设计了一个基于多相滤波的内插器，低通滤波器采用128阶凯撒窗，内插倍数32，并且给定信号范围，验证了内插器的正确性，画出了内插前后信号的频谱。-The code design the interpolator based on polyphase filter using two methods.The low pass filter is 128 order Caesar window and interpolation multiple is 32.I give the range of the signal to verify the interpolator and plot the spectrum of the signal before and after the interpolator. Platform: |
Size: 2048 |
Author: |
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Description: 应用时域内插公式模拟用理想低通滤波器由离散序列恢复模拟信号的编程-Application time domain interpolation formula simulation with ideal low-pass filter by discrete sequence recovery analog signal programming
Platform: |
Size: 1024 |
Author:彭泓龙 |
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Description: 实现内插数字上变频 内插 低通滤波器的子程序 整个系统的调试-Upconverting interpolation interpolated digital low-pass filter of the subroutine of the entire system debugging Platform: |
Size: 5120 |
Author:li |
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Description: 基于VS2008编写，程序很简单，算法很经典实用。提出一种基于三次拉格朗日插值的自适应图像缩放算法 该算法首先计算目标像素点周围三组源像素点的方差，选取方差最小的一组源像素点，然后采用三次拉格日插值公式求得目标像素点的灰度值实验结果表明，本文算法所得的目标图像边缘清晰，且算法复杂度较低，便于硬件实现，可以实现实时图像缩放。-Based on VS2008, the program has a very simple algorithm is very classic and practical. Traditional interpolation algorithm due to the low-pass filtering effect generally makes the target image edge blur, it is difficult to obtain satisfactory visual effects in order to achieve a better quality image scaling is proposed based on cubic Lagrange interpolation algorithm for adaptive image scaling algorithm that First calculate the target pixel set of source pixels around three variance, minimum variance select a set of source pixels, then the cubic Lagrange interpolation formula obtained target pixel gray value Experimental results show that the algorithm proceeds target image sharp edges, and the algorithm complexity is low, easy hardware implementation can achieve real-time image scaling. Platform: |
Size: 102400 |
Author:吴军 |
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Description: 各种滤波器的设计，包括高斯低通滤波器。hilberrt带通滤波器，插值滤波器等等。-Various filter design, including Gaussian low-pass filter. hilberrt band-pass filter, the interpolation filter and so on. Platform: |
Size: 1024 |
Author:sujiaji |
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Description: Channel estimation techniques for OFDM systems based on a pilot arrangement are investigated. Channel estimation based on a comb type pilot arrangement is studied through different algorithms for both estimating the channel at pilot frequencies and interpolating the channel. Channel estimation at pilot frequencies is based on LS and LMS methods while channel interpolation is done using linear interpolation, second order interpolation, low-pass interpolation, spline cubic interpolation, and time domain interpolation. Time-domain interpolation is obtained by passing to the time domain by means of IDFT (inverse discrete Fourier transform), zero padding and going back to the frequency domain by DFT (discrete Fourier transform). In addition, channel estimation based on a block type pilot arrangement is performed by sending pilots in every sub-channel and using this estimation for a Platform: |
Size: 3072 |
Author:MUHAMMAD SHAKIL |
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Description: 有源码，适合学习C++的人
一、 读入一幅灰度图象，编写程序显示图象中任一象素点的灰度值。
二、 编程实现RGB彩色空间到HSV彩色空间的转换，并通过调整H、S、V的值实现图像亮度、色度和色饱和度的调节。
三、 1.灰度线性变换、分段线性变换
2.灰度直方图均衡、规格化
3.图象卷积：各种模板实现低通、高通滤波
4.图象中值滤波、最大值滤波、最小值滤波、模板选择滤波
5.伪彩色图象增强
四、 1.图象的加、减、乘、除和逻辑运算。
2.图象的镜像变换、图象的缩放（灰度插值）变换
五、 编程实现图象的FFT变换和反变换
六、 用逆滤波方法和维纳滤波方法恢复运动模糊图象（加噪声和不加噪声）
七、 编写程序实现灰度图象的分割：
1、阈值化算法：手动阈值、自动阈值(大津阈值)
2、区域生长
3、区域分裂合并-There is source code for learning C++ people one reads a grayscale image, write a program to display the image in any one pixel gray value. Second, the programming RGB color space to the HSV color space conversion, and by adjusting the H, S, V values achieve adjust image brightness, color and color saturation. Third, 1 gray linear transformation, piecewise linear transformation 2. histogram equalization 3. image normalized convolution: a variety of templates for low pass, high pass filter 4. image median filtering, the maximum filter minimum filtering, template selection pseudo-color image enhancement filter 5. four, plus 1 image, subtract, multiply, divide, and logic operations. 2. The image of image transformation, zoom images (grayscale interpolation) into five, programming image of FFT and inverse transform six, inverse filtering method and Wiener filtering method to restore motion blur image (plus noise and without noise) Seven, programming Grayscale image segmentation: 1, thresho Platform: |
Size: 1072128 |
Author:zl |
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Description: 首先，生成一个多音正弦，然后进行补零的插值，然后把补零插值的信号塞到一个低通滤波器里面，这样就有三个版本的信号，原始信号，补零插值信号，以及插值滤波之后的信号。(First, generate a polyphonic sine, and then make zero interpolation, and then fill the zero interpolation signal into a low-pass filter inside, so there are three versions of the signal, the original signal, zero interpolation signal, and interpolation filter After the signal.) Platform: |
Size: 1024 |
Author:断雁孤鸿
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Description: 利用椭圆低通滤波器对信号进行滤波，并利用加汉宁窗的插值方法对信号进行了频谱分析(To filter the signal by using the elliptic low pass filter, and the signal spectrum analysis using interpolation method and Hanning window) Platform: |
Size: 1024 |
Author:Emiya.Shirou
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Description: 对MIT心电信号处理，线性插值，低通滤波，高通滤波，带阻滤波。
使用方法为在命令窗口输入R('XX.txt'),XX为你在MIT下载的txt数据。(MIT ECG signal processing, linear interpolation, low pass filter, high pass filter, band stop filter.
The use of the method is to enter R ('XX.txt') at the command window, and XX is the txt data you download at MIT.) Platform: |
Size: 3072 |
Author:夜月明1
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Search - low pass interpolation