Description: 1．几种灰度变换，分段线性化，平方变换，对数变换，平方根变换等等
2．几种滤波器，中值滤波，均值滤波等等
3．图像分割，边缘检测，轮廓提取，以及SOBEL梯度算子
4．彩色图像，红色通道，绿色通道，蓝色通道
5．图像的几何变换，图像缩放，镜像（水平镜像和垂直镜像）
-1. Several gray-scale transformation, piecewise linear, square transform, the number of transformation, and so on two square root transformation. Several filter, filter, filtering, etc. 3. Image segmentation, edge detection, contour extraction, and the gradient operator SOBEL 4. Color images, red, green channel, blue channel 5. Image geometry transform, image scaling, image (horizontal and vertical mirror image) Platform: |
Size: 69235 |
Author:gloria |
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Description: matlab图像边缘边缘检测：包括小波多尺度边缘检测主程序、求纵向细节v和横行细节h的合成及模极大值、对矩阵取自适应阈值等-Matlab Edge Edge Detection : including wavelet multiscale edge detection main program. seeking details of the vertical and horizontal v h details of the synthesis and modulus maxima, the right matrix for adaptive threshold value Platform: |
Size: 9791 |
Author:Jimmy Yen |
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Description: 1．几种灰度变换，分段线性化，平方变换，对数变换，平方根变换等等
2．几种滤波器，中值滤波，均值滤波等等
3．图像分割，边缘检测，轮廓提取，以及SOBEL梯度算子
4．彩色图像，红色通道，绿色通道，蓝色通道
5．图像的几何变换，图像缩放，镜像（水平镜像和垂直镜像）
-1. Several gray-scale transformation, piecewise linear, square transform, the number of transformation, and so on two square root transformation. Several filter, filter, filtering, etc. 3. Image segmentation, edge detection, contour extraction, and the gradient operator SOBEL 4. Color images, red, green channel, blue channel 5. Image geometry transform, image scaling, image (horizontal and vertical mirror image) Platform: |
Size: 68608 |
Author:gloria |
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Description: matlab图像边缘边缘检测：包括小波多尺度边缘检测主程序、求纵向细节v和横行细节h的合成及模极大值、对矩阵取自适应阈值等-Matlab Edge Edge Detection : including wavelet multiscale edge detection main program. seeking details of the vertical and horizontal v h details of the synthesis and modulus maxima, the right matrix for adaptive threshold value Platform: |
Size: 9216 |
Author:Jimmy Yen |
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Description: 使用prewitt算子和sobel算子分别在垂直和水平方向进行检测，生成4幅分割图像-Using sobel operator and Prewitt operator, respectively, in the vertical and horizontal direction detection, image segmentation to generate 4 Platform: |
Size: 3072 |
Author:萧然 |
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Description: 含有了图像处理中一些经典和常用的图像处理算法，如：灰度图像处理，图像增强，图像变换，形态学图像处理。其中灰度图像处理包含三个算法：彩色图转灰度图，灰度图直方图，直方图均衡化；图像增强含有：增加椒盐噪声，中值滤波，sobel算子边缘提取(水平方向和垂直方向一起考虑)，laplace算子边缘提取，模糊，锐化；图像变换含有：haar小波变换，RGB转HSV颜色空间。形态学图像处理含腐蚀，膨胀，开操作，闭操作。-Contains some of the classic image processing and image processing algorithms commonly used, such as: gray-scale image processing, image enhancement, image transformations, morphological image processing. One gray-scale image processing consists of three algorithms: color map turn gray level, gray level histogram, histogram equalization image enhancement includes: Increasing Salt and pepper noise, median filtering, sobel edge detection operator (horizontal and vertical the direction considered together), laplace operator edge detection, blur, sharpen image transformation includes: haar wavelet transform, RGB switch to HSV color space. Morphological image processing, including corrosion, swelling, open operation, closed operation. Platform: |
Size: 317440 |
Author:孙亚新 |
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Description: This Matlab code shows how to perform edge detection by Sobel method in horizontal & vertical direction and the effect of increasing and decreasing the threshold value . Besides, you can try to perform the edge detection by other method in the same ways such as Prewitt , Roberts , Canny and others.-This Matlab code shows how to perform edge detection by Sobel method in horizontal & vertical direction and the effect of increasing and decreasing the threshold value . Besides, you can try to perform the edge detection by other method in the same ways such as Prewitt , Roberts , Canny and others. Platform: |
Size: 107520 |
Author:Tan |
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Description: 摘要
车辆牌照识别(License Plate Recognition System, LPR)作为目标自动识别的一
种重要形式，可用于电子收费、出入控制、车流监控等众多场合，从而提高交通
管理自动化的程度，它的相关技术的研究正逐渐受到人们的重视。
本文主要介绍基于Run Length原理和Tamura纹理的车牌定位系统，该系统是基
于视频流进行开发的，主要包括车辆运动区域检测、车牌图像处理、车牌定位。
其中车辆运动区域检测利用多帧求平均的背景估计方法实现；车牌图像处理包括
灰度变换、中值滤波、边缘检测和二值化；车牌定位包括车牌水平定位、车牌垂
直定位、颜色判断和细定位。
该定位系统是在C++Builder环境下实现的，针对不同大小车牌、不同光照条件
的1400张图片进行测试，其定位率可以达到92 以上；同时也将该算法封装成DLL
库，应用在雷达测试仪中，对各种光照条件下的视频流进行测试。测试结果证明
本文算法简单、快速、准确率高，满足车牌识别系统实时性、通用性、和准确性
的要求，具有一定的应用价值。
关键词：车牌定位Run Length Tamura纹理-Abstract
As an important application form of target automatic recognition, vehicle license
plate recognition( LPR) technology is used in some fields, such as electron charging,
pass controlling and automobile stream supervising etc.
The paper introduces license plate location system based on the principle of Run
Length and Tamura texture feature. The system is developed based on video streams,
mainly includes vehicle motion region detection, license plate image processing, vehicle
license plate location. The detection of vehicle motion region uses the background
estimation methods based on the average of multi-frame license plate image processing
includes gray-scale transformation, median filtering, edge detection and binarization
the license plate location includes license plate horizontal location, license plate vertical
position, color judgments and accurate location.
The system is achieved in the C++ Builder environment, and it uses 1400 images
that are of different Platform: |
Size: 2509824 |
Author:王述 |
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Description: 实现对酒瓶子的边缘检测，背景差分，垂直和水平投影等，并可实现计数功能。-Achieve the bottles of edge detection, background difference, the vertical and horizontal projection, and to achieve counting. Platform: |
Size: 10519552 |
Author:梁志敏 |
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Description: Roberts 边缘检测算子，检测水平和垂直边缘效果好于斜向边缘，定位精度高，对噪声敏感
-Roberts edge detection operator, the detection of horizontal and vertical edge effects better than the oblique edge, high positioning accuracy, noise-sensitive Platform: |
Size: 10240 |
Author:kristena |
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Description: 本程序采用一种基于垂直Sobel算子检测边缘和投影法的车牌定位方法,根据车牌区域竖直纹理突出的特点，利用Sobel垂直算子提取边缘，然后投影得到车牌的水平投影图，利用水平投影图分割出车牌，再运用膨胀运算进行车牌垂直定位。利用旋转投影法寻找车牌倾斜角度，然后用双线性插值进行车牌图像倾斜矫正。对经过精定位的车牌利用垂直投影法，找出各个字符的中心点，根据字符中心点位置进行切割。同时将切割出来的图片与数据库中的每张模板图片进行减法运算，计算该图片与模板的均方误差，其均方误差最小的模板即为识别出的字符。-This program uses edge detection and projection of license plate positioning method based on vertical Sobel operator, according to a prominent feature of the license plate area vertical texture operator Sobel vertical edge extraction, then the horizontal projection of the projector to get the license plate, the horizontal projection the Figure split out the license plate, and then use the the dilation operation license plate vertical positioning. Take advantage of the rotation projection method to find the license plate tilt angle, and then the license plate image tilt correction bilinear interpolation. The focal point for fine positioning license plate using the vertical projection method to identify each character, according to the the character center point cut. Cutting out pictures with each template images in the database, subtraction, calculation of the mean square error of the picture with the template, the mean square error of the smallest template is identified characters. Platform: |
Size: 7168 |
Author:埃米尔 |
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Description: 基于dsp c64的边缘检测算法的实现 Sobel边缘算子 两个卷积形成sobel算子，图像中每个点都用这两个核做卷积，一个核对同常的垂直边缘相应最大，而另一个对水平边缘相应最大。-Dsp c64 edge detection algorithm to achieve Sobel edge operator the two convolutional formation sobel operator, for each point in the image with the convolution of two nuclear doing, a check with the usual vertical edges corresponding maximum, and the other corresponding maximum horizontal edges. Platform: |
Size: 792576 |
Author:王林 |
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Description: 利用sobel算子实现边缘检测，包括水平方向，垂直方向，以及45度，135度检测。-Using edge detection sobel operator, including horizontal and vertical directions, as well as 45 degrees, 135 degrees is detected Platform: |
Size: 3072 |
Author:李建辉 |
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Description: The Prewitt operator is used in image processing, particularly within edge detection algorithms. Technically, it is a discrete differentiation operator, computing an approximation of the gradient of the image intensity function. At each point in the image, the result of the Prewitt operator is either the corresponding gradient vector or the norm of this vector. The Prewitt operator is based on convolving the image with a small, separable, and integer valued filter in horizontal and vertical directions and is therefore relatively inexpensive in terms of computations. On the other hand, the gradient approximation which it produces is relatively crude, in particular for high frequency variations in the image. The Prewitt operator was developed by Judith M. S. Prewitt. Platform: |
Size: 1024 |
Author:ali |
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Description: 索贝尔算子(Sobel operator)是图像处理中的算子之一，主要用作边缘检测。在技术上，它是一离散性差分算子，用来运算图像亮度函数的梯度之近似值。在图像的任何一点使用此算子，将会产生对应的梯度矢量或是其法矢量
Sobel算子有两个，一个是检测水平边沿的；另一个是检测垂直平边沿的。Sobel算子另一种形式是各向同性Sobel (Isotropic Sobel)算子，也有两个，一个是检测水平边沿的，另一个是检测垂直边沿的各向同性Sobel算子和普通Sobel算子相比，它的位置加权系数更为准确，在检测不同方向的边沿时梯度的幅度一致。由于建筑物图像的特殊性，我们可以发现，处理该类型图像轮廓时，并不需要对梯度方向进行运算，所以程序并没有给出各向同性Sobel算子的处理方法。由于Sobel算子是滤波算子的形式，用于提取边缘，可以利用快速卷积函数，简单有效，因此应用广泛。
-Sobel operator (Sobel operator) operator is one of image processing, mainly for edge detection. Technically, it is a discrete difference operator for the operation gradient approximation image brightness function. At any point using this image operator, will have its corresponding gradient vector or vector method Sobel operator has two, one is to detect the horizontal edge the other is to detect vertical flat edge. Sobel operator is another form of isotropic Sobel (Isotropic Sobel) operator, there are two, one is to detect the horizontal edge, and the other vertical edge detection isotropic Sobel operator Sobel operator and ordinary compared to its location more accurate weighting factor, consistent detect edges in different directions when the magnitude of the gradient. Due to the special nature of the building of the image, we can see that, when dealing with this type of image contour, gradient direction does not need to be operational, so the program does not give an isotropic Sobe Platform: |
Size: 277504 |
Author:林晓冬 |
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Search - horizontal and vertical edge detection