Description: 1．细胞边缘检测
（1） 原理：
Soble算子边缘检测---Soble微分算子是一种奇数大小（3×3）的模板下的全方向微分算子。Soble滤波器进行处理的结果，在视觉上只能感觉到该微分算子所提取
出的细节轮廓相对明显一些。
Laplacian算子边缘检测---用Laplacian二阶微分算子所提取出的细节多，说明二阶算子早对图像细节有很强的敏感性。
-1. Cell Edge Detection (1) Principle: Soble edge detection operator--- Soble differential operator is an odd size (3 × 3) of the template under the omni-directional differential operator. Soble filter processing result, the visual impression that the only differential operator out the details mentioned in the outline of a number of relatively obvious. Laplacian operator Laplacian edge detection--- with second-order differential operator referred out more details on second-order operator as early as the image details have a strong sensitivity. Platform: |
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Author:深蓝 |
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Description: PDTDFB toolbox
The filter bank is described in:
The Shiftable Complex Directional Pyramid—Part I: Theoretical Aspects
The Shiftable Complex Directional Pyramid—Part II: Implementation and Applications
IEEE transaction on singnal processing, Oct. 2008
Other related papers and software are available at:
nttruong.googlepages.com
Acknowledgement: The code development is based on the matlab code of the contourlet toolbox and the steerable pyramid.-PDTDFB toolboxThe filter bank is described in: The Shiftable Complex Directional Pyramid-Part I: Theoretical Aspects The Shiftable Complex Directional Pyramid-Part II: Implementation and Applications IEEE transaction on singnal processing, Oct. 2008 Other related papers and software are available at: nttruong . googlepages.com Acknowledgement: The code development is based on the matlab code of the contourlet toolbox and the steerable pyramid. Platform: |
Size: 84992 |
Author:chan man man |
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Description: #SurfBox: MATLAB and C++ toolbox that implements the new directional filter bank and the surfacelet transform as described in the paper Multidimensional directional filter banks and surfacelets.
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Size: 13272064 |
Author:dao |
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Description: Design and Use of Steerable Filters PAMI1991文章的代码，含有测试图像和demo，可运行-It implements a steerable Gaussian filter.
This m-file can be used to evaluate the first directional derivative of an image, using the method outlined in:
W. T. Freeman and E. H. Adelson, "The Design and Use of Steerable Filters", IEEE PAMI, 1991. Platform: |
Size: 337920 |
Author:李 |
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Description:
The LASIP routines for Color Filter Array Interpolation based on LPA-ICI:
- CFAI for noiseless data
- adaptation for noisy data
- CFAI for noisy data based on directional cross-color filters.-
The LASIP routines for Color Filter Array Interpolation based on LPA-ICI:
- CFAI for noiseless data
- adaptation for noisy data
- CFAI for noisy data based on directional cross-color filters. Platform: |
Size: 122880 |
Author:mythu |
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Description: 非下采样contourlet变换是一种较新的多尺度几何分析方法，能够很好地描述信号的线奇异特征，具有多方向滤波器组。-Nonsubsampled contourlet transform is a relatively new method of multiscale geometric analysis, can well describe the signal characteristics of the line singularity, with multi-directional filter. Platform: |
Size: 97280 |
Author:gameshadow |
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Description: DFBREC_L Directional Filterbank Reconstruction using Ladder Structure
x = dfbrec_l(y, fname)
Input:
y: subband images in a cell vector of length 2^n
f: filter in the ladder network structure,
can be a string naming a standard filter (see LDFILTER)- DFBREC_L Directional Filterbank Reconstruction using Ladder Structure
x = dfbrec_l(y, fname)
Input:
y: subband images in a cell vector of length 2^n
f: filter in the ladder network structure,
can be a string naming a standard filter (see LDFILTER) Platform: |
Size: 1024 |
Author:maple |
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Description: BACKSAMP Backsampling the subband images of the directional filter bank
y = backsamp(y)
Input and output are cell vector of dyadic length
This function is called at the end of the DFBDEC to obtain subband images
with overall sampling as diagonal matrices
See also: DFBDEC- BACKSAMP Backsampling the subband images of the directional filter bank
y = backsamp(y)
Input and output are cell vector of dyadic length
This function is called at the end of the DFBDEC to obtain subband images
with overall sampling as diagonal matrices
See also: DFBDEC Platform: |
Size: 1024 |
Author:maple |
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Description: A filter bank structure that can deal effectively with piecewise smooth images with smooth contours, was proposed by Minh N Do and Martin Vetterli. The resulting image expansion is a directional multiresolution analysis framework composed of contour segments, and thus is named contourlet. This will overcome the challenges of wavelet and curvelet transform. Contourlet transform is a double filter bank structure. It is implemented by the pyramidal directional filter bank (PDFB) which decomposes images into directional subbands at multiple scales. In terms of structure the contourlet transform is a cascade of a Laplacian Pyramid and a directional filter bank. In essence, it first use a wavelet-like transform for edge detection, and then a local directional transform for contour segment detection. The contourlet transform provides a sparse representation for two-dimensional piecewise smooth signals that resemble images. Platform: |
Size: 14336 |
Author:Aynesh |
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Description: 使用双线性插值的图像旋转，和本站的其余旋转不同，我的旋转不会使图像缺角，好处就是旋转后他的傅里叶变换的频域图也旋转同样的角度，同样可以用来处理矩阵，来做滤波器，我在做方向滤波器，有兴趣要的可以m我。-Using bilinear interpolation, image rotation, and the rest of the rotation is the rotation does not make the image Cutaway, the advantage is that the rotation after his Fourier transform frequency domain also rotates the same angle, can also be used to handle the matrix, do the filter, I was doing directional filter, interested to m. Platform: |
Size: 1024 |
Author:陈雨露 |
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Description: 我们设计和实验证明
布拉格光栅波分复用器
三波长的平面光波电路复用
公交车站台。1310和1550 nm的光，被设计成
由一个半周期通过定向耦合器分离后
和一个完整的周期耦合作用与0.07和0.19分贝的损失，
分别。1492 nm的光反射回来的布拉格
光栅对定向耦合器及其制作少损失
超过2分贝。我们也介绍和讨论新概念
集成光学三工收发器，使用此过滤器。
-We designed and experimentally demonstrated a
Bragg grating-assisted wavelength-division-multiplexing filter for
the three-wavelength multiplexing on a planar-lightwave-circuit
platform. The 1310- and 1550-nm lights were designed to be
separated after passing the directional coupler by a half-cycle
and a full-cycle coupling actions with losses of 0.07 and 0.19 dB,
respectively. The 1492-nm light was reflected back by a Bragg
grating fabricated on the directional coupler and its loss was less
than 2.0 dB. We also introduced and discussed the new concept of
an integrated optical triplexer transceiver using this filter. Platform: |
Size: 151552 |
Author:陈 |
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Description: Using phase and magnitude information of the complex directional filter bank for texture image retri Platform: |
Size: 355328 |
Author:wang |
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Description: 此程序为暗原色先验去雾算法的改进算法，利用导向滤波估算透射率，属于图像去雾类算法。(This program is an improved algorithm of dark prior fog removal algorithm, which uses directional filtering to estimate transmittance, and belongs to the image defogging algorithm.) Platform: |
Size: 6408192 |
Author:poppy_ouc
|
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Description: 这篇论文提出了一种较好的水下图像增强的方法。首先使用经过端到端训练的卷积神经网络去测量输入图片，同时以自适应双边滤波器对传输图片进行处理。接着提出一种基于白平衡的策略来消除图片的颜色偏差，用拉普拉斯金字塔融合获得无雾和色彩校正图像的融合结果。 最后，输出图像被转换为混合小波和方向滤波器组（HWD）域，用于去噪和边缘增强。 实验结果表明，该方法可以消除颜色失真，提高水下图像的清晰度。(This paper proposes a better underwater image enhancement method. Firstly, an end-to-end training convolutional neural network is used to measure the input image, and an adaptive bilateral filter is used to process the transmitted image. Then a strategy based on white balance is proposed to eliminate the color deviation of images. The fusion results of fog-free and color correction images are obtained by Laplacian pyramid fusion. Finally, the output image is converted into hybrid wavelet and directional filter bank (HWD) domain for denoising and edge enhancement. The experimental results show that the method can eliminate color distortion and improve the clarity of underwater images.) Platform: |
Size: 37983232 |
Author:凫枭 |
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Search - directional filter