<?xml version="1.0" encoding="utf-8" ?><rss version="2.0"><channel><title><![CDATA[jimtien的专栏]]></title><description><![CDATA[]]></description><link>https://blog.youkuaiyun.com/jimtien</link><language>zh-cn</language><generator>https://blog.youkuaiyun.com/</generator><copyright><![CDATA[Copyright &copy; jimtien]]></copyright><item><title><![CDATA[实际电容的频率特性]]></title><link>https://blog.youkuaiyun.com/jimtien/article/details/126700787</link><guid>https://blog.youkuaiyun.com/jimtien/article/details/126700787</guid><author>jimtien</author><pubDate>Mon, 05 Sep 2022 11:33:28 +0800</pubDate><description><![CDATA[非理想电容器的等效电路模型，其频率特性映电容器在不同频率下的表现。  ]]></description><category></category></item><item><title><![CDATA[电容器的 ESR 参数]]></title><link>https://blog.youkuaiyun.com/jimtien/article/details/126678370</link><guid>https://blog.youkuaiyun.com/jimtien/article/details/126678370</guid><author>jimtien</author><pubDate>Sat, 03 Sep 2022 16:37:53 +0800</pubDate><description><![CDATA[关于电容器 ESR，一个电子工程师应该知道的一切 
]]></description><category></category></item><item><title><![CDATA[OpenCVSharp 笑脸检测]]></title><link>https://blog.youkuaiyun.com/jimtien/article/details/119393010</link><guid>https://blog.youkuaiyun.com/jimtien/article/details/119393010</guid><author>jimtien</author><pubDate>Wed, 04 Aug 2021 21:00:38 +0800</pubDate><description><![CDATA[利用Harra Cascade分类器进行人脸检测和进一步进行笑脸检测，采用训练好的分类模型，在OpenCVSharp里变得非常简单，两三条语句就搞定了：

CascadeClassifier face_cascade = new CascadeClassifier(facemodelfile); //创建一个人脸分类器
face_cascade .DetectMultiScale(image); //检测人脸

CascadeClassifier smile_cascade = new Cas...]]></description><category></category></item><item><title><![CDATA[OpenCVSharp中的目标跟踪]]></title><link>https://blog.youkuaiyun.com/jimtien/article/details/119348155</link><guid>https://blog.youkuaiyun.com/jimtien/article/details/119348155</guid><author>jimtien</author><pubDate>Tue, 03 Aug 2021 14:48:32 +0800</pubDate><description><![CDATA[众所周知，OpenCV提供了8种目标跟踪算法，它们是：

BOOSTING
	MIL
	KCF
	TLD
	MEADIANFLOW
	GOTURN
	MOSSE
	CSRT
而OpenCVSharp（4.5x）中，实现了常用的四种：MIL、KCF、GOTURN、CSRT。

具体而言，它们是在OpenCVSharp.Tracking命名空间下的 TrackerCSRT, TrackGOTURN, TrackerKCF, TrackerMIL等类。

这些跟踪器用法几乎是一模一样的，基本上是先用 Cre...]]></description><category></category></item><item><title><![CDATA[OpenCVSharp 使用 Yolo V3 模型进行视频目标检测和分类]]></title><link>https://blog.youkuaiyun.com/jimtien/article/details/119251608</link><guid>https://blog.youkuaiyun.com/jimtien/article/details/119251608</guid><author>jimtien</author><pubDate>Fri, 30 Jul 2021 17:15:56 +0800</pubDate><description><![CDATA[首先下载Yolo训练好的模型：https://pjreddie.com/media/files/yolov3.weights

共3个文件：yolov3.cfg，yolov3.weights，coco.names


using System.Collections.Generic;
using System.IO;
using System.Linq;
using OpenCvSharp;
using OpenCvSharp.Dnn;

namespace OpenCvSharpYolo3
{
  ...]]></description><category></category></item><item><title><![CDATA[C# PictureBox 显示视频的问题]]></title><link>https://blog.youkuaiyun.com/jimtien/article/details/119180376</link><guid>https://blog.youkuaiyun.com/jimtien/article/details/119180376</guid><author>jimtien</author><pubDate>Wed, 28 Jul 2021 17:39:22 +0800</pubDate><description><![CDATA[C#用OpenCVSharp开发视频处理应用，通常用 PictureBox循环显示图片（视频帧）来显示视频。比如：


VideoCapture capture = new VideoCapture(0);
Mat image = new Mat();

while (true)
{
     capture.Read(image);
     if(image.Empty())
         break;

   pictureBox1.Image = image.ToBitmap();
...]]></description><category></category></item><item><title><![CDATA[OpenCVSharp 背景消除]]></title><link>https://blog.youkuaiyun.com/jimtien/article/details/119040086</link><guid>https://blog.youkuaiyun.com/jimtien/article/details/119040086</guid><author>jimtien</author><pubDate>Fri, 23 Jul 2021 17:08:25 +0800</pubDate><description><![CDATA[用OpenCVSharp 4.5跑一遍OpenCV官方教程。

原OpenCV官方教程链接：OpenCV: How to Use Background Subtraction Methods




using System;
using OpenCvSharp; 
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace ConsoleApp1
{
    class tutorial61:IT...]]></description><category></category></item><item><title><![CDATA[OpenCVSharp 图像拼接]]></title><link>https://blog.youkuaiyun.com/jimtien/article/details/119033378</link><guid>https://blog.youkuaiyun.com/jimtien/article/details/119033378</guid><author>jimtien</author><pubDate>Fri, 23 Jul 2021 14:21:19 +0800</pubDate><description><![CDATA[用 OpenCVSharp 4.5跑一遍OpenCV官方教程。

原OpenCV官方教程链接：OpenCV: High level stitching API (Stitcher class)




using OpenCvSharp;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace Cons...]]></description><category></category></item><item><title><![CDATA[OpenCVSharp 生成 HDR 图片]]></title><link>https://blog.youkuaiyun.com/jimtien/article/details/119026930</link><guid>https://blog.youkuaiyun.com/jimtien/article/details/119026930</guid><author>jimtien</author><pubDate>Fri, 23 Jul 2021 11:16:08 +0800</pubDate><description><![CDATA[用OpenCVSharp 4.5跑一遍OpenCV官方教程。

原OpenCV官方教程链接：OpenCV: High Dynamic Range Imaging

测试图片可以从这里下载：github.com


using System;
using OpenCvSharp;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Collections.Generic;

namesp...]]></description><category></category></item><item><title><![CDATA[OpenCVSharp 相机棋盘格校正]]></title><link>https://blog.youkuaiyun.com/jimtien/article/details/119009460</link><guid>https://blog.youkuaiyun.com/jimtien/article/details/119009460</guid><author>jimtien</author><pubDate>Thu, 22 Jul 2021 21:37:42 +0800</pubDate><description><![CDATA[用OpenCVSharp 4.5跑一遍 OpenCV官方教程。

原OpenCV 官方教程链接：OpenCV: Camera calibration With OpenCV

这个教程的程序源码比较复杂，这里简化一下以集中精力在核心的校正部分：只限于用棋盘格图片校正，本来就少量几个参数直接写进程序里，免去xml文件读写的麻烦。




using System;
using OpenCvSharp;
using System.Linq;
using System.Text;
using System...]]></description><category></category></item><item><title><![CDATA[OpenCVSharp DNN - 使用Caffe框架模型]]></title><link>https://blog.youkuaiyun.com/jimtien/article/details/118929804</link><guid>https://blog.youkuaiyun.com/jimtien/article/details/118929804</guid><author>jimtien</author><pubDate>Tue, 20 Jul 2021 10:52:28 +0800</pubDate><description><![CDATA[用OpenCVSharp（4.5）跑一遍OpenCV官方教程。

原OpenCV官方教程链接：OpenCV: Load Caffe framework models




using System;
using OpenCvSharp;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using OpenCvSharp.Dnn;
using System.IO;

namespace ConsoleApp1
...]]></description><category></category></item><item><title><![CDATA[OpenCVSharp 4.5 相机位移之单应性矩阵]]></title><link>https://blog.youkuaiyun.com/jimtien/article/details/118914739</link><guid>https://blog.youkuaiyun.com/jimtien/article/details/118914739</guid><author>jimtien</author><pubDate>Mon, 19 Jul 2021 21:29:38 +0800</pubDate><description><![CDATA[用OpenCVSharp 4.5跑一遍OpenCV官方教程

原OpenCV官方教程链接：OpenCV: Basic concepts of the homography explained with code(Demo3)


using System;
using System.Collections.Generic;
using OpenCvSharp;
namespace ConsoleApp1
{
    class tutorial56 : ITutorial
    {
    ...]]></description><category></category></item><item><title><![CDATA[OpenCVSharp 4.5 单应性矩阵 - 全景照片拼接]]></title><link>https://blog.youkuaiyun.com/jimtien/article/details/118900285</link><guid>https://blog.youkuaiyun.com/jimtien/article/details/118900285</guid><author>jimtien</author><pubDate>Mon, 19 Jul 2021 16:22:44 +0800</pubDate><description><![CDATA[用 OpenCVSharp 4.5跑一遍OpenCV官方教程

原OpenCV官方教程链接：似乎网站宕机了


using System;
using OpenCvSharp;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace ConsoleApp1
{
    class tutorial55 : ITutorial
    {

        private void basicPan...]]></description><category></category></item><item><title><![CDATA[OpenCVSharp 4.5 单应性矩阵 - 透视校正]]></title><link>https://blog.youkuaiyun.com/jimtien/article/details/118894681</link><guid>https://blog.youkuaiyun.com/jimtien/article/details/118894681</guid><author>jimtien</author><pubDate>Mon, 19 Jul 2021 14:11:24 +0800</pubDate><description><![CDATA[用 OpenCVSharp 4.5跑一遍OpenCV官方教程。

原OpenCV官方教程链接：挂啦（2021-7-19）


using System;
using OpenCvSharp;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace ConsoleApp1
{
    class tutorial54 : ITutorial
    {


        enum Pattern { ...]]></description><category></category></item><item><title><![CDATA[OpenCVSharp 4.5 单应性矩阵(Homography)估计相机姿态]]></title><link>https://blog.youkuaiyun.com/jimtien/article/details/118883882</link><guid>https://blog.youkuaiyun.com/jimtien/article/details/118883882</guid><author>jimtien</author><pubDate>Sun, 18 Jul 2021 21:47:44 +0800</pubDate><description><![CDATA[用OpenCVSharp 4.5跑一遍OpenCV官方教程。

原OpenCV 官方 教程链接：（今天链接失效了？）Demo 1


using System;
using System.Collections.Generic;
using OpenCvSharp;

namespace ConsoleApp1
{
    class tutorial52 : ITutorial
    {
        enum Pattern { CHESSBOARD, CIRCLES_GRID, ASYM...]]></description><category></category></item><item><title><![CDATA[OpenCVSharp 4.5 AKAZE、ORB 平面追踪]]></title><link>https://blog.youkuaiyun.com/jimtien/article/details/118863245</link><guid>https://blog.youkuaiyun.com/jimtien/article/details/118863245</guid><author>jimtien</author><pubDate>Sat, 17 Jul 2021 21:53:43 +0800</pubDate><description><![CDATA[用OpenCVSharp 4.5跑一遍OpenCV官方教程

原OpenCV官方教程链接：OpenCV: AKAZE and ORB planar tracking


using System;
using System.Collections.Generic;
using OpenCvSharp;
namespace ConsoleApp1
{
    class tutorial51 : ITutorial
    {
        public void Run()
        {
 ...]]></description><category></category></item><item><title><![CDATA[OpenCVSharp 4.5 AKAZE 特征匹配]]></title><link>https://blog.youkuaiyun.com/jimtien/article/details/118824126</link><guid>https://blog.youkuaiyun.com/jimtien/article/details/118824126</guid><author>jimtien</author><pubDate>Fri, 16 Jul 2021 21:17:40 +0800</pubDate><description><![CDATA[用OpenCVSharp 4.5跑一遍OpenCV官方教程

原OpenCV官方教程链接：OpenCV: AKAZE local features matching


using System;
using System.Collections.Generic;
using OpenCvSharp;
using OpenCvSharp.XFeatures2D;

namespace ConsoleApp1
{
    class tutorial50:ITutorial
    {
        ...]]></description><category></category></item><item><title><![CDATA[OpenCVSharp 4.5 定位已知物体（Features2D+Homography）]]></title><link>https://blog.youkuaiyun.com/jimtien/article/details/118788900</link><guid>https://blog.youkuaiyun.com/jimtien/article/details/118788900</guid><author>jimtien</author><pubDate>Fri, 16 Jul 2021 21:13:56 +0800</pubDate><description><![CDATA[用OpenCVSharp 4.5跑一遍OpenCV官方教程

原OpenCV官方教程链接：OpenCV: Features2D + Homography to find a known object

核心函数：

cv::findHomography
	cv::perspectiveTransform

using System;
using OpenCvSharp;
using System.Collections.Generic;
using System.Linq;
using Sys...]]></description><category></category></item><item><title><![CDATA[OpenCVSharp 4.5 特征匹配]]></title><link>https://blog.youkuaiyun.com/jimtien/article/details/118786003</link><guid>https://blog.youkuaiyun.com/jimtien/article/details/118786003</guid><author>jimtien</author><pubDate>Fri, 16 Jul 2021 10:12:11 +0800</pubDate><description><![CDATA[用OpenCVSharp 4.5跑一遍OpenCV官方教程

原OpenCV官方教程链接：OpenCV: Feature Description

核心要点：

使用 DescriptorExtractor接口方法找到关键点的特征向量
	使用 xfeatures2d::SURF::compute to进行计算
	使用 DescriptorMatcher来匹配特征向量
	使用 drawMatches 画出匹配点

using System;
using OpenCvSharp;
using...]]></description><category></category></item><item><title><![CDATA[OpenCVSharp 4.5 特征检测]]></title><link>https://blog.youkuaiyun.com/jimtien/article/details/118754979</link><guid>https://blog.youkuaiyun.com/jimtien/article/details/118754979</guid><author>jimtien</author><pubDate>Thu, 15 Jul 2021 11:06:57 +0800</pubDate><description><![CDATA[用OpenCVSharp 4.5跑一遍OpenCV官方教程。

原OpenCV 官方教程链接：OpenCV: Feature Detection

核心函数：

cv::FeatureDetector
	cv::xfeatures2d::SURF
	cv::xfeatures2d::SURF::detect
	cv::drawKeypoints

using System;
using OpenCvSharp;
using OpenCvSharp.XFeatures2D;

namespace C...]]></description><category></category></item></channel></rss>