Opencvshare4 and vs2019 configuration

0 、 Preface

What I have been studying before is opencvSharp3 and vs2015, But there is not much information on the Internet . Find information today , I found that a man used opencvSharp4 and vs2019, It seems that the process inside is the same as the original opencv2 The more similar . I'm fed up with trying to collect all kinds of variable types , Decided to turn sharp4; But in my original vs2015 above ,sharp4 It can not be used normally , Decide to uninstall 15, loading 19.

1 、vs2015 uninstall

The computer has been reinstalled several times ,vs2015 You can't uninstall directly for a long time , Deleting the installation directory directly will obviously leave more garbage . I found a software on the Internet ：

VisualStdioUninstaler

Successfully completed the unloading work . It should be noted that , The software needs to be opened by administrator ; You may fake death during operation , Reopening after closing can speed up unloading .（ You also need to manually delete the installation directory ）

（ This software is specially uninstalled vs2013 and 2015 Of , On my computer vs2010 Although the opening is abnormal , But it can still be used normally ）

2、vs2019 install

Found one vs2019 Offline installation package for , Taobao sold a temporary online disk account , download .

install , Considering my poor computer space , Only installed 【.net Desktop development 】, As follows :

Found in use ,.net Desktop development is traditional WPF; And general Windows Platform development should correspond to winform. in fact , My previous code is mainly based on winform Of , Simple use of discovery , In fact, there is little difference between the main concepts . But in terms of volume ,.net Volume 5G, General purpose Windows Platform volume 15G+, It is meaningful to learn something new .

3、 The first of cv project

（1） establish WPF application

（2） Interface design and response function

From assets - Control One of them Button To the interface , take xaml In file Content="Button" It is amended as follows Content=" Open the picture "

Check button , Click the lightning symbol on the right ：

stay Click Double click the function , Generate response function

private void Button1_Click(object sender, RoutedEventArgs e)
        {

        }

Add a simple test function , Add the following ：

private void Button1_Click(object sender, RoutedEventArgs e)
        {
            MessageBox.Show("Hello");
            Console.WriteLine("Hello");
        }

Run the test , It is found that the original debugging skills can still be used , Happy .

（3）opencvSharp4 add to

First you need to use NuGet Add reference

Enter... In the browse column opencvSharp4 , install opencvSharp4 and OpencvSharp4.runtime.win

Add a reference to the top of the source code

using OpenCvSharp;

Modify the key response function

Mat img = Cv2.ImRead("y.png");
Cv2.ImShow("y.png",img);

  among y.png I have put it in advance debug Under the table of contents . The operation interface is as follows ：

（4） The system generates directories

Don't add opencv Under the circumstances ,debug The catalog file is as follows （y.png Put the picture in advance for me ）：

add to opencv after debug The catalog file is as follows ：

  complete .