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Description: canny edge detector，下面是canny edge detector的算法： 1.将图像与高斯函数做卷积，获得平滑图像。 2.用基于平滑梯度方向的方法确定图像局部边缘的法向。 3.根据局部边缘的法线方向求解边缘位置。 4.计算边缘强度，并对梯度幅值进行非极大值抑制。 5.用双阈值算法检测和连接边缘。该文件提供了canny edge detector的VC实现代码。-canny edge detector, the following is a canny edge detector algorithm: 1. will make the image with the Gaussian convolution function to obtain a smooth image. 2. Gradient-based smoothing method to determine the direction of the edge of the image of local law to. 3. According to the local normal direction to solve the edge of the edge location. 4. Calculation of the edge strength, gradient amplitude and non-maxima suppression. 5. To use dual-threshold algorithm for edge detection and connection. The document provides a canny edge detector realize the VC code.
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Author: 桂祖恒 |
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Description: 计算图像的平均梯度，边缘强度，信息熵以及方差，图像可以是单波段或多波段图像。-Calculation of the average image gradient, edge strength, information entropy and the variance, images can be single-band or multi-band image.
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Author: dabin |
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Description: 使用小波变换来寻找图像边缘的matlab源代码，速度效果均很不错，可以手动选择算法执行的强度，来达到不同的效果
-The use of wavelet transform to find the edge of the matlab source code, the speed effects are very good, you can manually select the algorithm for the implementation of the strength, to achieve different effects
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Author: szx |
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Description: The salience distance transform incorporates edge strength information into the distance transform. The output is more robust and informative as input for techniques such as snakes
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Size: 49152 |
Author: moyini |
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Description: 虽然这是一个用C语言编写的图像处理源码，但可以很简单能过MATLAB命令来调用即mex s_trans.c ，以后就直接可以用M语言来完成操作。它是用来得到一幅图像每个像素周围的信息量。-Although this is a language with C-source image processing, but can be very easy to have MATLAB command to call that mex s_trans.c, since M can be used direct language to complete the operation. It is used to obtain an image of the amount of information around each pixel.s_trans delivers for each pixel an information about the surounding edge strength (L) und the surrounding edge position (s).
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Description: 图像质量评价，熵、平均梯度、边缘强度、方差等-Image quality evaluation, entropy, average gradient, edge strength, variance, etc.
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Size: 3072 |
Author: fanwentao |
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Description: Tit01.Dreamweaver超级技巧之文字特效
产生文字特效，最重要的是在扩展面板(如图3)中的设置，在“视觉效果下”的过滤器中列出的就是所有的CSS滤镜，选择Glow滤镜，它可以使文字产生边缘发光的效果。Glow滤镜的语法格式为：Glow(Color=?, Strength=?)，里面有两个参数：Color决定光晕的颜色，可以用如ffffff的十六进制代码，或者用Red、Yellow等单词表示 Strength表示发光强度，范围从0到255。本例中我们设置颜色为红色(Red)，发光强度为8，然后确定。-Super skills Tit01.Dreamweaver have the text of text effects special effects, the most important thing is the extended panel (Figure 3) in the settings, in the " visual effects" in the filter is listed in all of the CSS filter, select Glow filter, which can make the text have the effect of light-emitting edge. Glow filter syntax format: Glow (Color =?, Strength =?), There are two parameters: Color decided halo of color, can be used such as hexadecimal ffffff code, or Red, Yellow and other words said Strength said luminous intensity, ranging from 0-255. We set this case for the red color (Red), luminous intensity of 8, and then determine.
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Size: 124928 |
Author: zgp |
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Description: 为了在抑制噪声时尽可能保留图像边缘信息，提出一种自适应各向异性高斯滤波器设计方法. 该方法由独立
强度传播（IDS）模型决定滤波器的长轴尺度，由像素的邻域平滑度决定长短轴的比例，然后根据该处的灰度梯度方
向自适应决定各向异性滤波器的长轴方向. 仿真实验表明，提出的自适应各向异性滤波器具有很强的噪声抑制和
边缘保持能力.
-In order to suppress noise, as far as possible to keep the image edge information, an adaptive anisotropic Gaussian filter design methods. The method by the independent strength spread (IDS) model determines the long axis of the filter scale, the pixel neighborhood smoothness determine the ratio of minor axis, and then there' s gray gradient direction of adaptive decision the long axis of anisotropic filter. Simulation results show that the proposed adaptive anisotropic filter has a strong noise suppression and preserve edges.
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Author: wangcong |
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Description: 这是从网上整理出来的图像融合评价标准，总共有13项性能指标。包括平均梯度，边缘强度，信息熵，灰度均值，标准差(均方差MSE)，均方根误差，峰值信噪比（psnr），空间频率(sf)，图像清晰度，互信息(mi)，结构相似性(ssim)，交叉熵(cross entropy)，相对标准差。大家一起交流吧~-This is sorted out from the online image fusion evaluation criteria, there are a total of 13 performance indicators. Including the average gradient, edge strength, information entropy, gray are
Value, standard deviation (mean square error MSE), root mean square error, peak signal to noise ratio (psnr), spatial frequency (sf), image clarity, mutual information (mi), structure
Similarity (ssim), cross-entropy (cross entropy), the relative standard deviation. Exchange it with everyone ~
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Author: 海洋 |
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Description: CANNY EDGE DETECTION
Canny edge detection 的步驟：
1. 將原始影像和高斯濾波器做摺積。
2. 利用一次微分的遮罩對影像每一個像素求得四個方向的邊線強度
3. 找出四個方向中的最大值作為目前像素的邊線強度。
4. 依據步驟 3 將梯度方向分成四個區域
5. 非最大值刪除：沿著梯度方向找出最大值，並將其保留，其餘均設為零。
6. 設定兩個閥值 low T 和 high T ，用 high T 挑選出最佳的邊線像素，再從鄰近
點（neighbor)中找出梯度強度大於 low T 的像素，即可得到我們要的邊緣輪廓。
UML處可以選取影像路徑-Canny edge detection steps:
An original image and the Gaussian filter to do the convolution.
Edge intensity of 2 using the first derivative of the mask obtained for each pixel on the image in four directions
Find the maximum value in the four directions as the edge intensity of the pixel.
(4) in accordance with step 3 of the direction of the gradient is divided into four regions
5 non-maximal Delete: to find out the maximum value along the direction of the gradient, and reserves the right, the rest are set to zero.
6 set two thresholds a low T and high T-high T to select the best edge pixels, from the neighboring
Points (The neighbor) to find the gradient strength is greater than the pixels of a low T, you can get to the edge contour.
UML at you can select the image path
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Author: 王之盈 |
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Description: 利用图像的相位信息，用gabor滤波器组求图像的边缘强度图。基于相位一致性的图像边缘强度图C代码。-Use of the phase information of the image, the edge intensity of the image using Gabor filter group and FIG. Based on the consistency of the image edge strength phase diagram C code.
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Size: 4085760 |
Author: Allen |
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Description: 图像清晰度判别程序主要用到边缘单位梯度强度去判别-The image clarity discriminant procedure is mainly used the edge units gradient strength to judge
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Author: 陆成 |
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Description: Sobel邊緣偵測：功能主要為邊際的偵測，內包含強度和梯度的圖形，並且梯度圖的直方圖顯示出來。-Sobel edge detection: main function the marginal detection contained within the strength and gradient graphics, and gradient histogram display.
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Size: 362496 |
Author: 張雅城 |
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Description: Edge Strength Filter Based Color Filter Array InterpolationAbstract—For economic reasons, most digital cameras use color filter arrays
instead of beam splitters to capture image data. As a result of this, only
one of the required three color samples becomes available at each pixel location
and the other two need to be interpolated.
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Author: md adil |
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Description: 该matlab代码主要用于计算图像的边缘强度，信息熵，灰度均值，标准差(均方差MSE)，均方根误差，峰值信噪比（psnr），空间频率(sf)，图像清晰度，互信息(mi)，结构相似性(ssim)，交叉熵(cross entropy)，相对标准差。- calculate the uation average gradient, edge strength, information entropy, gray are Value, standard deviation (mean square error MSE), root mean square error, peak signal to noise ratio (psnr), spatial frequency (sf), image clarity, mutual information (mi), structure Similarity (ssim), cross-entropy (cross entropy), the relative standard deviation.
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Author: 李伟 |
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Description: strength also control Auto or Manual Edge Control Mode see also OV772X_MANUAL_EDGE_CTRL.
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Size: 9216 |
Author: ltbielao |
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Description: Paragraph 15.4: compute the inner-edge filtering strength.
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Author: singfmnw |
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Description: Edge strength similarity for image quality assessment
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Author: xiaozhang |
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Description: 计算图像的平均梯度，边缘强度，信息熵以及方差，图像质量评价-The average gradient calculation image, edge strength, entropy and variance, image quality assessment
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Size: 2048 |
Author: 黄浮生 |
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Description: 这是从网上整理出来的图像融合评价标准，总共有13项性能指标。包括平均梯度，边缘强度，信息熵，灰度均值，标准差(均方差MSE)，均方根误差，峰值信噪比（psnr），空间频率(sf)，图像清晰度，互信息(mi)，结构相似性(ssim)，交叉熵(cross entropy)，相对标准差。-This is sorted out the online image fusion uation criteria, there are a total of 13 performance indicators. Including the average gradient, edge strength, information entropy, gray are Value, standard deviation (mean square error MSE), root mean square error, peak signal to noise ratio (psnr), spatial frequency (sf), image clarity, mutual information (mi), structure Similarity (ssim), cross-entropy (cross entropy), the relative standard deviation
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Author: 去额 |
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