博客
关于我
技巧 | OpenCV中如何绘制与填充多边形
阅读量:322 次
发布时间:2019-03-04

本文共 2626 字,大约阅读时间需要 8 分钟。

OpenCV ????????????

? OpenCV ??????????????????????????????????????????????????????? polylines ??? thickness ?????????????????????????????????????????????????????????????? OpenCV ???????????????


?????

? OpenCV ??polylines ????????????????????? thickness ?????????????????

  • ? thickness ?????????????????
  • ? thickness ?????????????????????

???? polylines ?????????????????????????????????????????????


polylines ????

??????? polylines ?????????????

Mat canvas = Mat::zeros(Size(512, 512), CV_8UC3);int w = canvas.cols;int h = canvas.rows;Point p1(100, 100);Point p2(300, 150);Point p3(300, 350);Point p4(250, 450);Point p5(50, 450);std::vector
pts;pts.push_back(p1);pts.push_back(p2);pts.push_back(p3);pts.push_back(p3);pts.push_back(p4);pts.push_back(p5);polylines(canvas, pts, true, Scalar(0, 255, 0), 1, LINE_8, 0);

??????????????????????????


?????

???????????????? fillPoly ?????????? polylines ???????????????????fillPoly ?????? polylines ????????????? fillPoly ??? thickness ? isClosed ???

fillPoly ????

??????? fillPoly ?????????????

Mat canvas = Mat::zeros(Size(512, 512), CV_8UC3);int w = canvas.cols;int h = canvas.rows;Point p1(100, 100);Point p2(300, 150);Point p3(300, 350);Point p4(250, 450);Point p5(50, 450);std::vector
pts;pts.push_back(p1);pts.push_back(p2);pts.push_back(p3);pts.push_back(p3);pts.push_back(p4);pts.push_back(p5);fillPoly(canvas, pts, Scalar(255, 0, 255), 8, 0);polylines(canvas, pts, true, Scalar(0, 255, 255), 2, LINE_8, 0);

???????????????????????????


?????????????

?? fillPoly ???OpenCV ???? drawContours ??????????? fillPoly ??????????????????????????drawContours ??????????

  • image??????????
  • contours??????????
  • contourIdx???????????????? -1 ?????????
  • color??????
  • thickness???????????????????

drawContours ????

??????? drawContours ????????????????

Mat canvas = Mat::zeros(Size(512, 512), CV_8UC3);int w = canvas.cols;int h = canvas.rows;Point p1(100, 100);Point p2(300, 150);Point p3(300, 350);Point p4(250, 450);Point p5(50, 450);std::vector
> contours;contours.push_back(pts);drawContours(canvas, contours, 0, Scalar(0, 0, 255), -1, 8);drawContours(canvas, contours, 0, Scalar(255, 0, 255), 2, 8);

?????????????????????????????????????


????

??????????????????????????????? fillPoly ? drawContours ???????

  • fillPoly ?????????????????????????
  • drawContours ?????????????????????????????????
  • ?????????????????????????????????


    OpenCV ????

    ??? OpenCV ??????????????????????????????? OpenCV ???????????????????????????????????????????OpenCV ????20??????????????


    ???????????????????????????????????? SLAM??????????????????????????????????????????+??/??+?????

    转载地址:http://adaq.baihongyu.com/

    你可能感兴趣的文章
    MySQL8找不到my.ini配置文件以及报sql_mode=only_full_group_by解决方案
    查看>>
    mysql8的安装与卸载
    查看>>
    MySQL8,体验不一样的安装方式!
    查看>>
    MySQL: Host '127.0.0.1' is not allowed to connect to this MySQL server
    查看>>
    Mysql: 对换(替换)两条记录的同一个字段值
    查看>>
    mysql:Can‘t connect to local MySQL server through socket ‘/var/run/mysqld/mysqld.sock‘解决方法
    查看>>
    MYSQL:基础——3N范式的表结构设计
    查看>>
    MYSQL:基础——触发器
    查看>>
    Mysql:连接报错“closing inbound before receiving peer‘s close_notify”
    查看>>
    mysqlbinlog报错unknown variable ‘default-character-set=utf8mb4‘
    查看>>
    mysqldump 参数--lock-tables浅析
    查看>>
    mysqldump 导出中文乱码
    查看>>
    mysqldump 导出数据库中每张表的前n条
    查看>>
    mysqldump: Got error: 1044: Access denied for user ‘xx’@’xx’ to database ‘xx’ when using LOCK TABLES
    查看>>
    Mysqldump参数大全(参数来源于mysql5.5.19源码)
    查看>>
    mysqldump备份时忽略某些表
    查看>>
    mysqldump实现数据备份及灾难恢复
    查看>>
    mysqldump数据库备份无法进行操作只能查询 --single-transaction
    查看>>
    mysqldump的一些用法
    查看>>
    mysqli
    查看>>