lvsolo的专栏

如图,四个长方形,rect.angle分别为0,20,140,260;四个顶点0~4处画圆,半径依次增大; 直线为中心点center到(center.x+1000*cos(rect.angle),center.y+1000*sin(rect.angle))的直线. 由图可见几点: 1.rect.angle从x轴正向开始,逆时针为正; 2.四个顶点依次顺时针排列,rect.angle为0

数据整理:用Python的os模块进行遍历文件夹,用string.encode("utf-8")解决编码不能写入的问题用Python的csv模块写入csv文件 #!/usr/bin python2.7# coding=utf-8import os.pathimport csvwith open('/home/lvsolo/下载/att_faces/list.csv', 'a+')

用Python对opencv samples进行批量生成可执行文件.oimport osfor root, dirs, files in os.walk("."): if(root == '.'): for file in files: if(len(file)>=5 and file[-3:] == 'cpp'):

在opencv2.4版本中，在source目录下直接运行cmake . CMakeLists.txt即可； 在后来的opencv3.3.0版本中，直接运行提示 FATAL: In-source builds are not allowed. You should create separate directory for build files.需要在source文件夹

#include "stdafx.h"#include<iostream> #include<sstream>//#include <opencv2/core/core.hpp> //#include <opencv2/highgui/highgui.hpp> //#include<math.h>//#include <opencv.h>#include <opencv2/ope

检测任务 主要参考了几篇文献博客： http://blog.youkuaiyun.com/xidianzhimeng/article/details/10470839 https://docs.opencv.org/3.3.1/dc/d88/tutorial_traincascade.html http://blog.youkuaiyun.com/liulina603/article/details/859868