C#使用AForge實現(xiàn)調用攝像頭的示例詳解

更新時間：2023年11月14日 09:01:24 作者：SongYuLong的博客

AForge是一個專門為開發(fā)者和研究者基于C#框架設計的,這個框架提供了不同的類庫和關于類庫的資源,本文為大家介紹了C#使用AForge實現(xiàn)調用攝像頭的相關教程,需要的可以了解下

安裝AForge

Visual Studio 2022=>項目=>管理NuGet程序包，搜索AForge并依次安裝作者為AForge.NET的多個關聯(lián)組件。

使用AForge控件

安裝AForge組件完成后，工具箱會新增AForge控件，將VideoSourcePlayer拖拽到Form控件區(qū)域即可。

1.定義變量

private FilterInfoCollection filterInfoCollection; // 攝像頭設備集合
private VideoCaptureDevice videoCaptureDevice; // 捕獲設備源
Bitmap bmp; // 處理圖片

2.獲取PC端所有攝像頭集合

filterInfoCollection = new FilterInfoCollection(FilterCategory.VideoInputDevice);

3.設置視頻源并啟動

videoCaptureDevice = new VideoCaptureDevice(filterInfoCollection[0].MonikerString);
videoSourcePlayer1.VideoSource = videoCaptureDevice;
videoSourcePlayer1.Start();

4.獲取一幀攝像頭數(shù)據(jù)

bmp = videoSourcePlayer1.GetCurrentVideoFrame(); // 拍照

5.關閉視頻源

if (videoSourcePlayer1.VideoSource != null)
{
videoSourcePlayer1.SignalToStop();
videoSourcePlayer1.WaitForStop();
videoSourcePlayer1.VideoSource = null;
}

示例代碼

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;
using AForge.Controls;
using AForge.Video;
using AForge.Video.DirectShow;

namespace CameraDemo
{
    public partial class Form1 : Form
    {
        private FilterInfoCollection filterInfoCollection; // 攝像頭設備集合
        private VideoCaptureDevice videoCaptureDevice;  // 捕獲設備源
        Bitmap bmp; // 處理圖片

        public Form1()
        {
            InitializeComponent();
        }
        private void Form1_Load(object sender, EventArgs e)
        {
            // 檢測PC端所有攝像頭
            filterInfoCollection = new FilterInfoCollection(FilterCategory.VideoInputDevice);
            MessageBox.Show("識別到:" + filterInfoCollection.Count.ToString() +"個攝像頭");

            comboBox1.Items.Add(filterInfoCollection[0].MonikerString);
        }

        private void CloseCamera()
        {
            if (videoSourcePlayer1.VideoSource != null)
            { 
                videoSourcePlayer1.SignalToStop();
                videoSourcePlayer1.WaitForStop();
                videoSourcePlayer1.VideoSource = null;
            }
        }

        private void button2_Click(object sender, EventArgs e)
        {
            try
            {
                TimeSpan now = DateTime.UtcNow - new DateTime(1970, 1, 1, 0, 0, 0, 0);
                long t = Convert.ToInt64(now.TotalMilliseconds)/1000;
                bmp.Save(string.Format(@"D:\{0}.jpg", t.ToString()));
                MessageBox.Show("保存成功");
            }
            catch (Exception ex)
            {
                MessageBox.Show(ex.Message);
            }            
        }

        private void comboBox1_SelectedIndexChanged(object sender, EventArgs e)
        {
            CloseCamera();

            if (comboBox1.SelectedIndex == 0 && filterInfoCollection.Count > 0)
            {
                videoCaptureDevice = new VideoCaptureDevice(filterInfoCollection[0].MonikerString);
            }
            else if (comboBox1.SelectedIndex == 1 && filterInfoCollection.Count > 1)
            {
                videoCaptureDevice = new VideoCaptureDevice(filterInfoCollection[1].MonikerString);
            }
            else {
                MessageBox.Show("攝像頭選擇有誤");
                return;
            }

            videoSourcePlayer1.VideoSource = videoCaptureDevice;
            videoSourcePlayer1.Start();

            button1.Enabled = true;
            button2.Enabled = true;
        }

        private void Form1_FormClosing(object sender, FormClosingEventArgs e)
        {
            CloseCamera();
        }

        /// <summary>
        /// 拍照
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void button1_Click(object sender, EventArgs e)
        {
            bmp = videoSourcePlayer1.GetCurrentVideoFrame(); // 拍照
            pictureBox1.Image = bmp;            
        }
    }
}

以上就是C#使用AForge實現(xiàn)調用攝像頭的示例詳解的詳細內容，更多關于C# AForge調用攝像頭的資料請關注腳本之家其它相關文章！

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