您当前的位置：首页 >

PCL点云处理之主成分分析法计算特征值和特征向量[PCA](四十六)

点云学徒发布时间：2022-01-15 17:29:30 ，浏览量：4

@TOC

前言一、主成分分析PCA？

阅读论文时，经常会遇到这个算法，比较常见的计算点云的局部特征时，利用特征值可以获取点云分布形状以及其它的特征，对于机器学习中的特征向量组成很有用。借助PCL库可以快速方便地计算点云的：PCA特征值和特征向量

二、实验步骤 1.代码


#include 
//这头文件直接全垒上来算了，省的麻烦

#include


    
        
            
                
                
                    点云学徒
                    暂无认证
                
            
            
                
                    
                        4浏览
                        0关注
                        54博文
                        0收益
                    

                    
                        0浏览
                        0点赞
                        0打赏
                        0留言
                    
                
            
            
                私信
                关注
            

        
        
            热门博文
            
                PCL点云处理总目录
PCL点云处理之VFH特征计算与直方图显示（七十一）
PCL点云处理之积分图法线估计（七十）
PCL点云处理之ICP配准（附代码，参数设置，实验结果）（六十六）
PCL点云处理之计算三维向量夹角（六十五）
PCL点云处理之创建二维格网组织点云数据（六十四）
PCL点云处理之pcd文件转txt文件（单个或多个批量转换）（六十三）
PCL点云处理之移动最小二乘拟合实验（六十二）
PCL点云处理之均匀采样抽稀（六十一）
PCL点云处理之随机采样抽稀RandomSample（六十）






    [ 申请 ]友情链接：
    
        快连vpn
        快连
        快连vpn
        搜外友链
        笔趣阁
        爱思助手
        ClashX教程
        绘画宝宝
        配音宝宝
    


    
        
            关于我们
            服务条款
            广告服务
            联系我们
            网站地图
            免责声明
            WAP
        
        技术支持：
            武汉快勤科技有限公司
            XML网站地图 
            备案号：鄂ICP备18027844号-9
            
        
    




    
        立即登录/注册
        
    
    
        
        微信扫码登录
    












	    基本
        文件
        流程
        错误
        SQL
        调试
    

		    
    
	请求信息 : 2025-08-17 18:07:37 HTTP/2.0 GET : /home/article/detail/id/431230.html
运行时间 : 0.0515s ( Load:0.0184s Init:0.0013s Exec:0.0200s Template:0.0117s )
吞吐率 : 19.42req/s
内存开销 : 1,920.14 kb
查询信息 : 16 queries 0 writes 
文件加载 : 36
缓存信息 : 5 gets 0 writes 
配置加载 : 132
会话信息 : SESSION_ID=pk1nu4882ohc16bj14b187p5ln
    
    
        
    
	/www/wwwroot/www.chaojiit.com/index.php ( 1.30 KB )
/www/wwwroot/www.chaojiit.com/ThinkPHP/ThinkPHP.php ( 4.71 KB )
/www/wwwroot/www.chaojiit.com/ThinkPHP/Library/Think/Think.class.php ( 12.32 KB )
/www/wwwroot/www.chaojiit.com/ThinkPHP/Library/Think/Storage.class.php ( 1.38 KB )
/www/wwwroot/www.chaojiit.com/ThinkPHP/Library/Think/Storage/Driver/File.class.php ( 3.56 KB )
/www/wwwroot/www.chaojiit.com/ThinkPHP/Mode/common.php ( 2.82 KB )
/www/wwwroot/www.chaojiit.com/ThinkPHP/Common/functions.php ( 51.07 KB )
/www/wwwroot/www.chaojiit.com/Application/Common/Common/function.php ( 6.83 KB )
/www/wwwroot/www.chaojiit.com/ThinkPHP/Library/Think/Hook.class.php ( 4.02 KB )
/www/wwwroot/www.chaojiit.com/ThinkPHP/Library/Think/App.class.php ( 12.44 KB )
/www/wwwroot/www.chaojiit.com/ThinkPHP/Library/Think/Dispatcher.class.php ( 15.15 KB )
/www/wwwroot/www.chaojiit.com/ThinkPHP/Library/Think/Route.class.php ( 13.38 KB )
/www/wwwroot/www.chaojiit.com/ThinkPHP/Library/Think/Controller.class.php ( 10.95 KB )
/www/wwwroot/www.chaojiit.com/ThinkPHP/Library/Think/View.class.php ( 7.96 KB )
/www/wwwroot/www.chaojiit.com/ThinkPHP/Library/Behavior/BuildLiteBehavior.class.php ( 3.69 KB )
/www/wwwroot/www.chaojiit.com/ThinkPHP/Library/Behavior/ParseTemplateBehavior.class.php ( 3.89 KB )
/www/wwwroot/www.chaojiit.com/ThinkPHP/Library/Behavior/ContentReplaceBehavior.class.php ( 1.93 KB )
/www/wwwroot/www.chaojiit.com/ThinkPHP/Conf/convention.php ( 11.18 KB )
/www/wwwroot/www.chaojiit.com/Application/Common/Conf/config.php ( 1.81 KB )
/www/wwwroot/www.chaojiit.com/ThinkPHP/Lang/zh-cn.php ( 2.57 KB )
/www/wwwroot/www.chaojiit.com/ThinkPHP/Conf/debug.php ( 1.51 KB )
/www/wwwroot/www.chaojiit.com/Application/Home/Conf/config.php ( 0.05 KB )
/www/wwwroot/www.chaojiit.com/ThinkPHP/Library/Behavior/ReadHtmlCacheBehavior.class.php ( 5.62 KB )
/www/wwwroot/www.chaojiit.com/Application/Home/Controller/ArticleController.class.php ( 6.55 KB )
/www/wwwroot/www.chaojiit.com/ThinkPHP/Library/Think/Model.class.php ( 67.27 KB )
/www/wwwroot/www.chaojiit.com/ThinkPHP/Library/Think/Db.class.php ( 5.70 KB )
/www/wwwroot/www.chaojiit.com/ThinkPHP/Library/Think/Db/Driver/Mysql.class.php ( 8.73 KB )
/www/wwwroot/www.chaojiit.com/ThinkPHP/Library/Think/Db/Driver.class.php ( 41.60 KB )
/www/wwwroot/www.chaojiit.com/ThinkPHP/Library/Think/Cache.class.php ( 3.84 KB )
/www/wwwroot/www.chaojiit.com/ThinkPHP/Library/Think/Cache/Driver/File.class.php ( 5.90 KB )
/www/wwwroot/www.chaojiit.com/ThinkPHP/Library/Think/Template.class.php ( 28.35 KB )
/www/wwwroot/www.chaojiit.com/ThinkPHP/Library/Think/Template/TagLib/Cx.class.php ( 22.62 KB )
/www/wwwroot/www.chaojiit.com/ThinkPHP/Library/Think/Template/TagLib.class.php ( 9.19 KB )
/www/wwwroot/www.chaojiit.com/Application/Runtime/Cache/Home/3c8a1a47a3534a7b1252c226abfc3928.php ( 14.58 KB )
/www/wwwroot/www.chaojiit.com/ThinkPHP/Library/Behavior/WriteHtmlCacheBehavior.class.php ( 1.43 KB )
/www/wwwroot/www.chaojiit.com/ThinkPHP/Library/Behavior/ShowPageTraceBehavior.class.php ( 5.27 KB )
    
    
        
    
	[ app_init ] --START--
Run Behavior\BuildLiteBehavior [ RunTime:0.000011s ]
[ app_init ] --END-- [ RunTime:0.000046s ]
[ app_begin ] --START--
Run Behavior\ReadHtmlCacheBehavior [ RunTime:0.000473s ]
[ app_begin ] --END-- [ RunTime:0.000517s ]
[ view_parse ] --START--
[ template_filter ] --START--
Run Behavior\ContentReplaceBehavior [ RunTime:0.000072s ]
[ template_filter ] --END-- [ RunTime:0.000143s ]
Run Behavior\ParseTemplateBehavior [ RunTime:0.009070s ]
[ view_parse ] --END-- [ RunTime:0.009109s ]
[ view_filter ] --START--
Run Behavior\WriteHtmlCacheBehavior [ RunTime:0.000261s ]
[ view_filter ] --END-- [ RunTime:0.000293s ]
[ app_end ] --START--
    
    
        
    
	[2] session_save_path(): open_basedir restriction in effect. File(/var/lib/php/session) is not within the allowed path(s): (/www/wwwroot/www.chaojiit.com/:/tmp/) /www/wwwroot/www.chaojiit.com/ThinkPHP/Common/functions.php 第 1239 行.
[8192] Array and string offset access syntax with curly braces is deprecated /www/wwwroot/www.chaojiit.com/ThinkPHP/Library/Think/Cache/Driver/File.class.php 第 59 行.
[8] Undefined variable: user /www/wwwroot/www.chaojiit.com/Application/Runtime/Cache/Home/3c8a1a47a3534a7b1252c226abfc3928.php 第 37 行.
[8] Undefined variable: user /www/wwwroot/www.chaojiit.com/Application/Runtime/Cache/Home/3c8a1a47a3534a7b1252c226abfc3928.php 第 98 行.
[8] Trying to access array offset on value of type null /www/wwwroot/www.chaojiit.com/Application/Runtime/Cache/Home/3c8a1a47a3534a7b1252c226abfc3928.php 第 98 行.
[8] Undefined variable: user /www/wwwroot/www.chaojiit.com/Application/Runtime/Cache/Home/3c8a1a47a3534a7b1252c226abfc3928.php 第 99 行.
[8] Trying to access array offset on value of type null /www/wwwroot/www.chaojiit.com/Application/Runtime/Cache/Home/3c8a1a47a3534a7b1252c226abfc3928.php 第 99 行.
[8] Undefined variable: pinglun_list /www/wwwroot/www.chaojiit.com/Application/Runtime/Cache/Home/3c8a1a47a3534a7b1252c226abfc3928.php 第 108 行.
    
    
        
    
	SHOW COLUMNS FROM `configuration` [ RunTime:0.0004s ]
SELECT `value` FROM `configuration` WHERE `name` = 'site_name' LIMIT 1   [ RunTime:0.0001s ]
SHOW COLUMNS FROM `menu` [ RunTime:0.0004s ]
SELECT * FROM `menu` WHERE `fid` = 0 AND `status` = 1  [ RunTime:0.0002s ]
SELECT * FROM `menu` WHERE `fid` = 1 AND `status` = 1  [ RunTime:0.0001s ]
SELECT * FROM `menu` WHERE `fid` = 2 AND `status` = 1  [ RunTime:0.0001s ]
SELECT * FROM `menu` WHERE `fid` = 3 AND `status` = 1  [ RunTime:0.0002s ]
SELECT * FROM `menu` WHERE `fid` = 4 AND `status` = 1  [ RunTime:0.0001s ]
SHOW COLUMNS FROM `article` [ RunTime:0.0005s ]
SELECT * FROM `article` WHERE `id` = 431230 LIMIT 1   [ RunTime:0.0004s ]
SHOW COLUMNS FROM `bloger` [ RunTime:0.0005s ]
SELECT * FROM `bloger` WHERE `id` = 770 LIMIT 1   [ RunTime:0.0001s ]
SELECT COUNT(*) AS tp_count FROM `article` WHERE `bloger_id` = 770 LIMIT 1   [ RunTime:0.0001s ]
SHOW COLUMNS FROM `article_content` [ RunTime:0.0004s ]
SELECT `content` FROM `article_content` WHERE `article_id` = 431230 LIMIT 1   [ RunTime:0.0011s ]
SELECT * FROM `article` WHERE `bloger_id` = 770 ORDER BY view_count desc LIMIT 0,10   [ RunTime:0.0002s ]
    
    
        
    
	    
    
    



0.0515s