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If you are trying to run DNN in OpenCV and unfortunately get such an error message:[ WARN:0] global C:\OpenCV\OpenCV4.2.0\opencv-4.2.0\modules\dnn\src\dnn.cpp (1363) cv::dnn::dnn4_v20191202::Net::Impl::setUpNet DNN module was not built with CUDA backend; switching to CPUThis means you don’t have a compatible environment for running a cuDNN based application.In this tutorial you will learn how to build OpenCV4.2.0 and all stuffs you have to notice.
After that you can easily use the following two commands without any errors.net.setPreferableBackend(DNN_BACKEND_CUDA);
net.setPreferableTarget(DNN_TARGET_CUDA);

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https://github.com/weixu000/libtorch-yolov3-deepsort
https://github.com/Smorodov/Multitarget-trackerDeepSORT: Deep Learning to Track Custom Objects in a Videohttps://nanonets.com/blog/object-tracking-deepsort/
End-to-end representation learning for Correlation Filter based tracking

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 1: static void Main(string[] args)

 2: {

 3: var v1 = f1();

 4: var avg1 = v1 / 3;

 5: Console.WriteLine($"{avg1.GetType().Name}, avg: {avg1}");

 6:  

 7: var v2 = f2();

 8: var avg2 = v2 / 3;

 9: Console.WriteLine($"{avg2.GetType().Name}, avg: {avg2}");

 10:  

 11: var v3 = f3();

 12: var avg3 = v3 / 3;

 13: Console.WriteLine($"{avg3.GetType().Name}, avg: {avg3}");

 14:  

 15: var v4 = f4();

 16: var avg4 = v4 / 3;

 17: Console.WriteLine($"{avg4.GetType().Name}, avg: {avg4}");

 18:  

 19: var v5 = f5();

 20: var avg5 = v5 / 3;

 21: Console.WriteLine($"{avg5.GetType().Name}, avg: {avg5}");

 22: Console.ReadKey();

 23: }

 24: static double f1()

 25: {

 26: double x = 100;

 27: return x;

 28: }

 29: static float f2()

 30: {

 31: float x = 100;

 32: return x;

 33: }

 34: static decimal f3()

 35: {

 36: decimal x = 100;

 37: return x;

 38: }

 39: static long f4()

 40: {

 41: long x = 100;

 42: return x;

 43: }

 44: static Int32 f5()

 45: {

 46: Int32 x = 100;

 47: return x;

 48: }

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OpenCL Error: Unknown error waiting for idle on GeForce GTX 1080 Ti (Device
I have a GTX 1080 but was having the same problem. Crashing within 20mins of use or less when I clicked on a nurbs curve/animation controller. The outliner getting spammed with that message.I changed a few settings, and it seems to have mitigated the crashing. These are the settings I changed in the preferences window:Display -> Viewport 2.0Rendering engine: DirectX 11 (I have a feeling this one isn't necessary, but I've kept it on)Animation -> Evaluation

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Youtube Tutorial PART 1 - Docker 基本教學 - 從無到有 Docker-Beginners-GuideYoutube Tutorial PART 2 - 用 Docker 實戰 Django 以及 PostgreYoutube Tutorial PART 3 - Docker 基本教學 - 透過 portainer 管理 Docker

Youtube Tutorial PART 4 - Docker push image to Docker Hub 教學

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以下為PAPAYA電腦教室的投影片教學，有興趣的人可以去訂閱學習。目前列出幾個還蠻厲害的特效功能，剩下等之後有機會再去研究，學完幾個招式就感覺功力大增。
如何設計一個簡單且質感指數破表的時間軸？
如何製作一個讓老闆跪著看的沉浸式簡報？

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Labeled Faces in the WildLabeled Faces in the Wild dataset, converted to fuel
FDDB: Face Detection Data Set and Benchmark

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 1: this.Invoke((MethodInvoker)delegate

 2: {

 3: int width, height, channel, step;

 4: unsafe

 5: {

 6: byte* srcBmpData = cVideo.GetSourceImage(&width, &height, &channel, &step);

 7: Result_lbl.Text = $"{width},{height},{channel},{step}";

 8: Bitmap bmp = new Bitmap(width, height, System.Drawing.Imaging.PixelFormat.Format32bppArgb);

 9: var data = bmp.LockBits(new Rectangle(0, 0, width, height),

 10: System.Drawing.Imaging.ImageLockMode.WriteOnly,

 11: System.Drawing.Imaging.PixelFormat.Format32bppRgb);

 12: byte* dstBmpData = (byte*)data.Scan0.ToPointer();

 13: int hei = height;

 14: int wid = width;

 15: int stepsize = step;

 16: 

 17:  

 18: for (int y = 0; y < height; y++)

 19: {

 20: for (int x = 0; x < width; x++)

 21: {

 22: dstBmpData[y * width * 4 + 4 * x] = srcBmpData[y * step + channel * x];

 23: dstBmpData[y * width * 4 + 4 * x + 1] = srcBmpData[y * step + channel * x + 1];

 24: dstBmpData[y * width * 4 + 4 * x + 2] = srcBmpData[y * step + channel * x + 2];

 25: }

 26: }

 27: bmp.UnlockBits(data);

 28: pictureBox1.Image = bmp;

 29: }

 30: });

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MainWindow.xaml

 1: <Window x:Class="WpfDispatcherApp.MainWindow"

 2: xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"

 3: xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"

 4: xmlns:d="http://schemas.microsoft.com/expression/blend/2008"

 5: xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"

 6: xmlns:local="clr-namespace:WpfDispatcherApp"

 7: mc:Ignorable="d"

 8: Title="MainWindow" Height="137" Width="554">

 9: <UniformGrid Rows="3" Columns="2">

 10: <Label Content="Input a number:" Height="28" HorizontalAlignment="Center" Name="label1" VerticalAlignment="Center" />

 11: <TextBox Height="23" HorizontalAlignment="Center" Name="textBox1" VerticalAlignment="Center" Width="100" Text="1000000000"/>

 12:  

 13: <Label Content="Result:" Height="28" HorizontalAlignment="Center" Name="label2" VerticalAlignment="Center" />

 14: <TextBox Height="23" HorizontalAlignment="Center" Name="textBox2" VerticalAlignment="Center" Width="100"/>

 15: <Button Content="synchronization" Height="23" HorizontalAlignment="Center" Name="button1" VerticalAlignment="Center" Width="100" Click="button1_Click" />

 16: <Button Content="asynchronization" Height="23" HorizontalAlignment="Center" Name="button2" VerticalAlignment="Center" Width="100" Click="button2_Click" />

 17: </UniformGrid>

 18: </Window>

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