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orthogonal-matching-pursuit

于 2012-12-06 发布文件大小:2040KB

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下载积分: 1 下载次数: 325

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代码说明：

OMP算法的matlab的详细描述，对学习正交匹配追踪算法和稀疏分解是很有用的(the OMP algorithm is describled by matlab,and it is very useful for us to study OMP algorithm and sparse decomposition.)

文件列表：

orthogonal matching pursuit
...........................\a Fast Approach for Overcomplete Sparse Decomposition Based on Smoothed Norm.pdf,676111,2012-03-15
...........................\A FAST ORTHOGONAL MATCHING PURSUIT ALGORITHM.pdf,310997,2012-03-29
...........................\ompbox.rar,49002,2012-03-30
...........................\Optimized Orthogonal Matching Pursuit Approach.pdf,236031,2012-03-29
...........................\Orthogonal Matching Pursuit for Sparse Signal.pdf,205842,2012-03-29
...........................\Orthogonal Matching Pursuit.pdf,339024,2012-03-29
...........................\Signal Recovery From Random Measurements.pdf,958736,2012-03-27

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src
说明： ORB-SLAM 基本延续了 PTAM 的算法框架,但对框架中的大部分组件都做了改进, 归纳起来主要有 4 点: ORB-SLAM 选用了 ORB 特征, 基于 ORB 描述量的特征匹配和重定位, 都比 PTAM 具有更好的视角不变性。此外, 新增三维点的特征匹配效率更高, 因此能更及时地扩展场景。扩展场景及时与否决定了后续帧是否能稳定跟踪。ORBSLAM 加入了循环回路的检测和闭合机制, 以消除误差累积。系统采用与重定位相同的方法来检测回路(匹配回路两侧关键帧上的公共点), 通过方位图 (Pose Graph) 优化来闭合回路。PTAM 需要用户指定 2 帧来初始化系统, 2 帧间既要有足够的公共点, 又要有足够的平移量. 平移运动为这些公共点提供视差 (Parallax) , 只有足够的视差才能三角化出精确的三维位置。ORB-SLAM 通过检测视差来自动选择初始化的 2 帧。PTAM 扩展场景时也要求新加入的关键帧提供足够的视差, 导致场景往往难以扩展. ORB-SLAM 采用一种更鲁棒的关键帧和三维点的选择机制——先用宽松的判断条件尽可能及时地加入新的关键帧和三维点, 以保证后续帧的鲁棒跟踪; 再用严格的判断条件删除冗余的关键帧和不稳定的三维点，以保证 BA 的效率和精度。(Orb-slam basically continues the algorithm framework of PTAM, but most of the components in the framework have been improved, which mainly includes four points:)

2020-06-11 23:43:54下载

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2012-04-24 13:58:01下载

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2020-04-27 10:58:54下载

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图片边缘检测滤镜，浮雕，反选色去色黑白化多功能代码
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2019-11-14下载

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将颜色图像的色彩迁移到灰度图像中，采用的算法为welsh算法，有较好的效果；该程序是在VC++6.0的环境下调试实现的，能将颜色图像的颜色较好的迁移到灰度图像中.(Migration of the color image to gray image in color, using the algorithm for the welsh algorithm, better results the program in VC++6.0 environment debugging to achieve, can color the better the color of the image transfer to the gray image.)

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2009-09-14 22:19:39下载

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