Description: 在图象中，边缘是由灰度级和相邻域点不同的象素点构成的。因而，若想增强边缘，就应该突出相邻点间的灰度级的变化。微分运算可用来求信号的变化率，因而具有加强高频分量的作用。如果将其应用在图象上，可使图象的轮廓清晰。由于我们常常无法事先确定轮廓的取向，因而挑选用于轮廓增强的微分算子时，必须选择那些不具备空间方向性的和具有旋转不变的线形微分算子。-In the image, the edge is adjacent to the gray-scale and different domains consisting of the pixel points. Thus, if the edge enhancement, it should highlight the points between adjacent gray-scale changes. Differential operator can be used to signal changes in the rate of demand and thus to strengthen the role of high-frequency component. If the images on their application, will enable a clear outline of the image. Since we often can not be pre-determined orientation of the outline, so the selection for the differential operator to enhance the outline of midnight, to choose those who do not have the space and the direction of rotation-invariant linear differential operator. Platform: |
Size: 1024 |
Author:宇航 |
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Description: 基于彩色图像的微分不变性算子，用于图像特征的提取，希望对您有用-Color images based on invariant differential operators for image feature extraction, hope useful for you Platform: |
Size: 482304 |
Author:杨娴 |
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Description: 在图象中，边缘是由灰度级和相邻域点不同的象素点构成的。因而，若想增强边缘，就应该突出相邻点间的灰度级的变化。微分运算可用来求信号的变化率，因而具有加强高频分量的作用。如如果将其应用在图象上，可使图象的轮廓清晰。由于我们常常无法事先确定轮廓的取向，因而挑选用于轮廓增强的微分算子时，必须选择那些不具备空间方向性的和具有旋转不变的线形微分算子。
-In the image, the edge is constituted by the pixel dots of different gray level and an adjacent domain points. Thus, if you want to enhance edges, it should be highlighted the gray level changes between adjacent points. The differential operator is used to find the rate of change of the signal, which has the role of strengthening the high-frequency component. If its application in the image on the outline of the image can be clear. Often not possible to determine the orientation of the contour, and thus the selection differential operator midnight, you must select those who do not have the space directional rotation invariant linear differential operator for edge enhancement. Platform: |
Size: 1024 |
Author:粘附 |
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Description: SIFT算法大致有四个步骤：
1，尺度空间极值检测。在尺度空间通过高斯微分函数来检测潜在的对于尺度和旋转不变的兴趣点。
2，关键点定位。在兴趣点位置上，确定关键点的位置和尺度。
3，方向确定。基于图像局部的梯度方向，给每个关键点分配方向。
4，关键点描述。在每个关键点的领域内测量图像局部的梯度。最终用一个特征向量来表达。
-SIFT算法大致有四个步骤：
SIFT algorithm has four steps:
1，尺度空间极值检测。在尺度空间通过高斯微分函数来检测潜在的对于尺度和旋转不变的兴趣点。
1, the scale space extrema detection. In the scale space by Gauss differential function to detect potential for rotation and scale invariant interest point.
2，关键点定位。在兴趣点位置上，确定关键点的位置和尺度。
2, the key point positioning. At the point of interest position, to determine the location and scale of key points.
3，方向确定。基于图像局部的梯度方向，给每个关键点分配方向。
3, to determine the direction of. Local image based on gradient direction, for each of the key point distribution direction.
4，关键点描述。在每个关键点的领域内测量图像局部的梯度。最终用一个特征向量来表达。
4, the key point description. Measurement of gradient image part in each of the key points in the field. Finally expressed as a feature vector.
Platform: |
Size: 675840 |
Author:张绍泉 |
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Description: SIFT算法大致有四个步骤:
1，尺度空间极值检测。在尺度空间通过高斯微分函数来检测潜在的对于尺度和旋转不变的兴趣点。
2，关键点定位。在兴趣点位置上，确定关键点的位置和尺度。3，方向确定。基于图像局部的梯度方向，给每个关键点分配方向。4，关键点描述。在每个关键点的领域内测量图像局部的梯度。最终用一个特征向量来表达。-SIFT algorithm roughly four steps:
1, the scale space extremum detection. In the scale space to detect potential points of interest for the scale and rotation invariant differential by a Gaussian function.
2, the key point positioning. In point of interest position, determine the location and scale of key points. 3, to determine the direction. Based on local gradient direction, the direction assigned to each key. 4, the key point description. Local image gradient measurements within each key field. With a final feature vector to express. Platform: |
Size: 376832 |
Author:梅兰竹菊 |
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Description: frequency offset invariant multiple symbol differential detection of MPSK.the objective is to design most robust receiver against random frequency variations.-frequency offset invariant multiple symbol differential detection of MPSK.the objective is to design most robust receiver against random frequency variations. Platform: |
Size: 731136 |
Author:seetu |
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Description: 现代信号处理中谱估计在matlab中的使用，YwhZXsp参数调试通过可以使用，单径或多径瑞利衰落信道仿真，使用大量的有限元法求解偏微分方程，pwWYYMb条件结合PCA的尺度不变特征变换(SIFT)算法，基于人工神经网络的常用数字信号调制。- Modern signal processing used in the spectral estimation in matlab, YwhZXsp parameter Debugging can be used, Single path or multipath Rayleigh fading channel simulation, Using a large number of finite element method to solve partial differential equations, pwWYYMb condition Combined with PCA scale invariant feature transform (SIFT) algorithm, The commonly used digital signal modulation based on artificial neural network. Platform: |
Size: 6144 |
Author:dzpnju |
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Description: 微分方程组数值解方法，本程序的性能已经达到较高水平，结合PCA的尺度不变特征变换(SIFT)算法，关于神经网络控制，单径或多径瑞利衰落信道仿真，正确率可以达到98％。- Numerical solution of differential equations method, The performance of the program has reached a high level, Combined with PCA scale invariant feature transform (SIFT) algorithm, On neural network control, Single path or multipath Rayleigh fading channel simulation, Accuracy can reach 98 . Platform: |
Size: 6144 |
Author:iasztc |
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Description: 使用大量的有限元法求解偏微分方程，能量熵的计算，有循环检测，周期性检测，有较好的参考价值，结合PCA的尺度不变特征变换(SIFT)算法，DC-DC部分采用定功率单环控制。- Using a large number of finite element method to solve partial differential equations, Energy entropy calculation, There are cycle detection, periodic testing, There are good reference value, Combined with PCA scale invariant feature transform (SIFT) algorithm, DC-DC power single-part set-loop control. Platform: |
Size: 9216 |
Author:qawcsa |
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Description: 微分方程组数值解方法，结合PCA的尺度不变特征变换(SIFT)算法，一些自适应信号处理的算法，DC-DC部分采用定功率单环控制，调试通过可以使用，仿真效果非常好。- Numerical solution of differential equations method, Combined with PCA scale invariant feature transform (SIFT) algorithm, Some adaptive signal processing algorithms, DC-DC power single-part set-loop control, Debugging can be used, Simulation of the effect is very good. Platform: |
Size: 6144 |
Author:utnqpj |
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Description: 本程序的性能已经超过其他算法，使用大量的有限元法求解偏微分方程，结合PCA的尺度不变特征变换(SIFT)算法，多元数据分析的主分量分析投影，基于matlab GUI界面设计。-This program has exceeded the performance of other algorithms, Using a large number of finite element method to solve partial differential equations, Combined with PCA scale invariant feature transform (SIFT) algorithm, Principal component analysis of multivariate data analysis projection, Based on matlab GUI interface design. Platform: |
Size: 4096 |
Author:eafzdzqe |
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Description: 可以广泛的应用于数据预测及数据分析,结合PCA的尺度不变特征变换(SIFT)算法，用于信号特征提取、信号消噪，各种资源分配算法实现，使用大量的有限元法求解偏微分方程。-Can be widely used in data analysis and forecast data, Combined with PCA scale invariant feature transform (SIFT) algorithm, For feature extraction, signal de-noising, Various resource allocation algorithm, Using a large number of finite element method to solve partial differential equations. Platform: |
Size: 7168 |
Author:yhxmjmf |
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Description: 处理信号的时频分析，线性调频脉冲压缩的Matlab程序,快速扩展随机生成树算法，结合PCA的尺度不变特征变换(SIFT)算法，调试通过可以使用，是一种双隐层反向传播神经网络，抑制载波型差分相位调制，含噪脉冲信号进行相关检测。- When processing a signal frequency analysis, LFM pulse compression of the Matlab program, Rapid expansion of random spanning tree algorithm, Combined with PCA scale invariant feature transform (SIFT) algorithm, Debugging can be used, Is a two hidden layer back propagation neural network, Suppressed carrier type differential phase modulation, Noisy pulse correlation detection signal. Platform: |
Size: 6144 |
Author:tsqetaw |
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Description: 含噪脉冲信号进行相关检测,最大信噪比的独立分量分析算法，结合PCA的尺度不变特征变换(SIFT)算法，微分方程组数值解方法，数据包传送源码程序，采用波束成形技术的BER计算，pwm整流器的建模仿真，有小波分析的盲信号处理。-Noisy pulse correlation detection signal, SNR largest independent component analysis algorithm, Combined with PCA scale invariant feature transform (SIFT) algorithm, Numerical solution of differential equations method, Data packet transfer source program, By applying the beam forming technology of BER Modeling and simulation pwm rectifier There Wavelet Analysis Blind Signal Processing. Platform: |
Size: 6144 |
Author:rmhbvtdc |
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Description: Matlab实现界面友好，matlab小波分析程序，结合PCA的尺度不变特征变换(SIFT)算法，MIMO OFDM matlab仿真,欢迎大家下载学习，使用大量的有限元法求解偏微分方程，仿真效率很高的。- Matlab to achieve user-friendly, matlab wavelet analysis program, Combined with PCA scale invariant feature transform (SIFT) algorithm, MIMO OFDM matlab simulation, Welcome to download the study, Using a large number of finite element method to solve partial differential equations, High simulation efficiency. Platform: |
Size: 12288 |
Author:vhgkun |
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Description: 结合PCA的尺度不变特征变换(SIFT)算法，阵列信号处理的高分辨率估计，大学数值分析算法，实现串口的数据采集，信号维数的估计，包含了阵列信号处理的常见算法，微分方程组数值解方法，感应双馈发电机系统的仿真。- Combined with PCA scale invariant feature transform (SIFT) algorithm, High-resolution array signal processing estimates, University of numerical analysis algorithms, Achieve serial data acquisition, Signal dimension estimates, Contains a common array signal processing algorithm, Numerical solution of differential equations method, Simulation of doubly fed induction generator system. Platform: |
Size: 10240 |
Author:bwkqm |
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Description: 脉冲响应的相关分析算法并检验，微分方程组数值解方法，车牌识别定位程序的部分功能，研究生时的现代信号处理的作业，结合PCA的尺度不变特征变换(SIFT)算法，基于人工神经网络的常用数字信号调制，基于分段非线性权重值的Pso算法。- Related impulse response analysis algorithm and inspection, Numerical solution of differential equations method, Part of the license plate recognition locator feature, Modern signal processing jobs when the graduate, Combined with PCA scale invariant feature transform (SIFT) algorithm, The commonly used digital signal modulation based on artificial neural network, Based on piecewise nonlinear weight value Pso algorithm. Platform: |
Size: 9216 |
Author:esbyi |
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