show webcam using aforge.net

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C#

Here my code :

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
using AForge.Video;
using AForge.Video.DirectShow;
using System.IO;
using AForge.Imaging;
using AForge.Imaging.Filters;
using AForge.Video.VFW;
using AForge.Video.FFMPEG;
using System.Drawing.Imaging;
using AForge.Math;

namespace CameraDevice
{
public partial class Form1 : Form
{

private FilterInfoCollection VideoCaptureDevices;
private VideoCaptureDevice abcVideo;

public Form1()
{
InitializeComponent();
}

private void Form1_Load(object sender, EventArgs e)
{
VideoCaptureDevices = new FilterInfoCollection(FilterCategory.VideoInputDevice); //Liet ke thiet bi


foreach (FilterInfo VideoCaptureDevice in VideoCaptureDevices)
{
comboBox1.Items.Add(VideoCaptureDevice.Name);

}
comboBox1.SelectedIndex = 0;
abcVideo = new VideoCaptureDevice();

}

private void button1_Click(object sender, EventArgs e) //Start
{

if (abcVideo.IsRunning == true) abcVideo.Stop();
abcVideo = new VideoCaptureDevice(VideoCaptureDevices[comboBox1.SelectedIndex].MonikerString); //Khoi tao nguon video

abcVideo.NewFrame += new NewFrameEventHandler(abcVideo_NewFrame);// Thiet lap xu li newFrame
abcVideo.Start(); // start video
label1.Text = "Device running...";
timer1.Enabled = true;

}
void abcVideo_NewFrame(object sender, NewFrameEventArgs evenrArgs)
{
Bitmap video = (Bitmap)evenrArgs.Frame.Clone();
pictureBox1.Image = video;


}

private void button2_Click(object sender, EventArgs e) //stop
{
if (abcVideo.IsRunning)
{
abcVideo.Stop();

timer1.Enabled = false;
label1.Text = "Device stopped.";
}
}
private void timer1_Tick(object sender, EventArgs e)
{
label1.Text = "Device running..." + abcVideo.FramesReceived.ToString() + " FPS";
}


}

}

Now I want extract frame and convert frame from RGB into HSI. Expect people to help