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EDLines 快速直线检测算子
EDLines是一种快速直线检测算子,2012年在ICCV上提出,也是目前处理直线检测最快的算法之一,该算法包含三个步骤:(1)边缘提取:利用Edge Drawing (ED)算法[28,29]从灰度图像中提取边缘片段;(2)线段检测:利用最小二乘法提取直线段;(3)线段确认:遵循Helmholtz定律,从已提取的直线段中摒弃虚假线段。EDLines算法的优越性得益于Edge Drawing (ED)算法能够从灰度图像中准确、快速、稳定地提取出光滑、完整的边缘片段。Edge Drawing (ED)算法包含以下步骤:
(1)采用size=5*5,σ=1的高斯核对灰度图像进行平滑滤波,去除噪声;
(2)采用一种常用的梯度算子,如Prewitt、Sobel或Scharr等计算平滑后图像中每个像素点的梯度幅度和梯度方向;
(3)将梯度图中邻域内幅度最大的像素点标记为锚点,这些锚点成为图像边缘点(edge elements)的概率很大;
(4)将相邻的锚点连接成边缘线。从一个锚点起始,ED利用相邻像素的梯度幅度和方向在梯度为最大值的锚点之间游走。
(Edge Drawing (ED) is our recently-proposed, novel, fast edge detection algorithm. What makes ED stand out
the existing edge detectors, e.g., Canny, is the following: While the other edge detectors give out a binary
edge image as output, where the etected edge pixels are usually independent, discontinuous entities ED produces a
set of edge segments, which are clean, contiguous, i.e., connected, chains of edge pixels. Thus, while the output of
the other edge detectors requires urther processing to generate potential object boundaries, which may not even be
possible or result in inaccuracies ED not only produces perfectly connected object boundaries by default, but it also achieves this in blazing speed compared to other edge detector.)
- 2021-03-22 16:29:16下载
- 积分:1
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krogager_decomp
极化SAR图像处理中 相干目标的 KROGAGER分解程序(Polarization SAR image processing in coherent goal decomposition process KROGAGER)
- 2008-12-13 11:18:26下载
- 积分:1
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graph12341234
java 图形算法实现源代码,有坐标放大缩小。(java graphics algorithm source code, coordinates Zooming.)
- 2006-10-23 19:39:03下载
- 积分:1
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GLDM
基于灰度共生矩阵的纹理特征提取。特征参数为:熵,能量,(GLCM-based texture feature extraction. The characteristic parameters: entropy, energy,)
- 2012-05-31 12:06:10下载
- 积分:1
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1-(5)
图形处理,Visual C++数字图像识别技术典型案例源代码 5(Graphics processing , the Visual C++ digital image recognition technology to a typical case of source code 5)
- 2012-02-29 11:13:02下载
- 积分:1
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StringMatch
带通配符的字符串匹配,多重匹配,支持通配符“*”,“?”(String matching with wildcards, multiple matches, supports wildcards " *" , " ?" )
- 2014-01-16 10:33:12下载
- 积分:1
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RRT-path-panning-algorithm
本文以自主驾驶车辆为实际应用背景.提出了一种改进的RRT(快速随机搜索树)路径规划算法.该路
径规划算法将非完整性约束条件与双向多步扩展RRT搜索算法相结合,在提高搜索效率的同时保证了规划路径的可
行性.同时将路径点作为B样条基函数的控制点,用三次B样条函数来拟合控制点生成平滑可跟踪的路径.通过在平
面障碍物环境下实验,验证了该算法的有效性.(AimingattheapplicationofALV(automaticlandvehicle),animprovedRRT(RapidlyRandom?exploring
Trees)pathplanningalgorithm isproposed.Thealgorithm combinesthenoholonomicconstraintsofvehiclewithdoubleextend
RRTs,whichnotonlyimprovestheefficiencyofsearchingbutalsoguaranteesthefeasibilityofthepathatthesametime.Thepath
pointsaretakenasreferencepointsfortheB?splinebasicfunction,approachandcreateanewsmoothroutewhichsuitsforthevehi?
cletofollow.Thesimulationoutcomesandfieldtestsverifytheeffectivenessofthemethodproposed.)
- 2012-12-01 18:39:27下载
- 积分:1
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GDAL
GDAL影像显示 建立金字塔通过i移动图像 进行图像的放大缩小 多波段显示影像金子塔显示
(GDAL image creates pyramid)
- 2012-12-21 23:29:55下载
- 积分:1
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MSE
MSE,最小均方误差,用于图像匹配,可用,亲测(MSE, minimum mean square error for image matching, available, pro-test)
- 2021-01-07 21:08:51下载
- 积分:1
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grandopen-close
利用idl语言实现图像的数学形态学开闭重建运算,比提取梯度图像。(Idl language use mathematical morphological opening and closing image reconstruction operations, compared to extract gradient image.)
- 2020-09-04 09:48:06下载
- 积分:1