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C#用SDK打开海康工业相机,callback取图Bitmap格式，并保存

news 2025/7/13 18:00:28

上次写了python版本的,但是python虽好不方便发布,她带着重重的解释器有时候不方便玩耍.于是C#来了哦.

C#图像一般用Bitmap表示,所以完全C#就够,别的格式可以自行想转换.

命令行哦,没界面.

MVCamera.cs从MVS示例里面添加到项目中,using MvCamCtrl.NET; 就可以,不需要添加mvcameracrtlnet.dll引用;

build BMP的部分程序是自动生成后面我人工调试出来的.

using System;using MvCamCtrl.NET;
using System.Runtime.InteropServices;
using System.Drawing;
using System.Drawing.Imaging;
using SC = System.Console;using System.IO;using System.Threading;
using System.Diagnostics.Eventing.Reader;
using static System.Net.Mime.MediaTypeNames;
using System.Xml.Linq;
using System.Collections.Generic;
using System.Linq;
using System.Text;
namespace Grab_Callback
{class Grab_Callback{public static MyCamera.cbOutputExdelegate ImageCallback;public static MyCamera device = new MyCamera();public static Bitmap buildBMP(int width, int height, byte[] imgBytes){Bitmap bmp;bmp = new Bitmap(width, height, PixelFormat.Format24bppRgb);BitmapData bmpData = bmp.LockBits(new Rectangle(0, 0, bmp.Width, bmp.Height),ImageLockMode.WriteOnly, bmp.PixelFormat);Marshal.Copy(imgBytes, 0, bmpData.Scan0, imgBytes.Length);bmp.UnlockBits(bmpData);// EventTask.Runreturn bmp;}public static byte[] m_BufForDriver1=null;public static Bitmap Bbmp = null;private static Bitmap bmpNow;public static string Getcwd = System.Environment.CurrentDirectory + "\\";public static Bitmap buildBMP(int width, int height, byte[] imgBytes, bool isGrayScale){Bitmap bmp;if (isGrayScale){bmp = new Bitmap(width, height, PixelFormat.Format8bppIndexed);ColorPalette palette = bmp.Palette;for (int i = 0; i < palette.Entries.Length; i++){palette.Entries[i] = Color.FromArgb(i, i, i);}bmp.Palette = palette;}else{bmp = new Bitmap(width, height, PixelFormat.Format24bppRgb);}BitmapData bmpData = bmp.LockBits(new Rectangle(0, 0, bmp.Width, bmp.Height),ImageLockMode.WriteOnly, bmp.PixelFormat);Marshal.Copy(imgBytes, 0, bmpData.Scan0, imgBytes.Length);bmp.UnlockBits(bmpData);return bmp;}static void ImageCallbackFunc(IntPtr pData, ref MyCamera.MV_FRAME_OUT_INFO_EX pFrameInfo, IntPtr pUser){string x = $"{pFrameInfo.nWidth}/" + $"{pFrameInfo.nHeight}:" + $"{pFrameInfo.nFrameNum} ";m_BufForDriver1 = new byte[pFrameInfo.nFrameLen];Marshal.Copy(pData, m_BufForDriver1, 0, ((int)pFrameInfo.nFrameLen));// 检查图像是否为灰度图//   bool isGrayScale = pFrameInfo.nPixelFormat == MyCamera.MV_PIXEL_FORMAT.MONO8 ||//                      pFrameInfo.nPixelFormat == MyCamera.MV_PIXEL_FORMAT.MONO16; // 根据实际像素格式常量进行调整Bbmp = buildBMP(pFrameInfo.nWidth, pFrameInfo.nHeight, m_BufForDriver1, false);Bbmp.Save(Getcwd + pFrameInfo.nFrameNum.ToString() + ".bmp", ImageFormat.Bmp);SC.WriteLine(x);}static void Main(string[] args){int nRet = MyCamera.MV_OK;MyCamera.MV_CC_Initialize_NET();// ch: 初始化 SDK | en: Initialize SDKdo{// ch:枚举设备 | en:Enum deviceMyCamera.MV_CC_DEVICE_INFO_LIST stDevList = new MyCamera.MV_CC_DEVICE_INFO_LIST();nRet = MyCamera.MV_CC_EnumDevices_NET(MyCamera.MV_GIGE_DEVICE | MyCamera.MV_USB_DEVICE, ref stDevList);if (MyCamera.MV_OK != nRet){Console.WriteLine("Enum device failed:{0:x8}", nRet);break;}Console.WriteLine("Enum device count : " + Convert.ToString(stDevList.nDeviceNum));if (0 == stDevList.nDeviceNum){break;}MyCamera.MV_CC_DEVICE_INFO stDevInfo;                            // 通用设备信息// ch:打印设备信息 en:Print device infofor (Int32 i = 0; i < stDevList.nDeviceNum; i++){stDevInfo = (MyCamera.MV_CC_DEVICE_INFO)Marshal.PtrToStructure(stDevList.pDeviceInfo[i], typeof(MyCamera.MV_CC_DEVICE_INFO));if (MyCamera.MV_GIGE_DEVICE == stDevInfo.nTLayerType){MyCamera.MV_GIGE_DEVICE_INFO_EX stGigEDeviceInfo = (MyCamera.MV_GIGE_DEVICE_INFO_EX)MyCamera.ByteToStruct(stDevInfo.SpecialInfo.stGigEInfo, typeof(MyCamera.MV_GIGE_DEVICE_INFO_EX));uint nIp1 = ((stGigEDeviceInfo.nCurrentIp & 0xff000000) >> 24);uint nIp2 = ((stGigEDeviceInfo.nCurrentIp & 0x00ff0000) >> 16);uint nIp3 = ((stGigEDeviceInfo.nCurrentIp & 0x0000ff00) >> 8);uint nIp4 = (stGigEDeviceInfo.nCurrentIp & 0x000000ff);Console.WriteLine("[device " + i.ToString() + "]:");Console.WriteLine("DevIP:" + nIp1 + "." + nIp2 + "." + nIp3 + "." + nIp4);Console.WriteLine("ModelName:" + stGigEDeviceInfo.chModelName + "\n");}else if (MyCamera.MV_USB_DEVICE == stDevInfo.nTLayerType){MyCamera.MV_USB3_DEVICE_INFO_EX stUsb3DeviceInfo = (MyCamera.MV_USB3_DEVICE_INFO_EX)MyCamera.ByteToStruct(stDevInfo.SpecialInfo.stUsb3VInfo, typeof(MyCamera.MV_USB3_DEVICE_INFO_EX));Console.WriteLine("[device " + i.ToString() + "]:");Console.WriteLine("SerialNumber:" + stUsb3DeviceInfo.chSerialNumber);Console.WriteLine("ModelName:" + stUsb3DeviceInfo.chModelName + "\n");}}Int32 nDevIndex = 0;Console.Write("Please input index(0-{0:d}):", stDevList.nDeviceNum - 1);try{nDevIndex = Convert.ToInt32(Console.ReadLine());}catch{Console.Write("Invalid Input!\n");break;}if (nDevIndex > stDevList.nDeviceNum - 1 || nDevIndex < 0){Console.Write("Input Error!\n");break;}stDevInfo = (MyCamera.MV_CC_DEVICE_INFO)Marshal.PtrToStructure(stDevList.pDeviceInfo[nDevIndex], typeof(MyCamera.MV_CC_DEVICE_INFO));// ch:创建设备 | en:Create devicenRet = device.MV_CC_CreateDevice_NET(ref stDevInfo);if (MyCamera.MV_OK != nRet){Console.WriteLine("Create device failed:{0:x8}", nRet);break;}// ch:打开设备 | en:Open devicenRet = device.MV_CC_OpenDevice_NET();if (MyCamera.MV_OK != nRet){Console.WriteLine("Open device failed:{0:x8}", nRet);break;}// ch:探测网络最佳包大小(只对GigE相机有效) | en:Detection network optimal package size(It only works for the GigE camera)if (stDevInfo.nTLayerType == MyCamera.MV_GIGE_DEVICE){int nPacketSize = device.MV_CC_GetOptimalPacketSize_NET();if (nPacketSize > 0){nRet = device.MV_CC_SetIntValueEx_NET("GevSCPSPacketSize", nPacketSize);if (nRet != MyCamera.MV_OK){Console.WriteLine("Warning: Set Packet Size failed {0:x8}", nRet);}}else{Console.WriteLine("Warning: Get Packet Size failed {0:x8}", nPacketSize);}}// ch:设置触发模式为off || en:set trigger mode as offnRet = device.MV_CC_SetEnumValue_NET("TriggerMode", 0);if (MyCamera.MV_OK != nRet){Console.WriteLine("Set TriggerMode failed:{0:x8}", nRet);break;}// ch:注册回调函数 | en:Register image callbackImageCallback = new MyCamera.cbOutputExdelegate(ImageCallbackFunc);nRet = device.MV_CC_RegisterImageCallBackEx_NET(ImageCallback, IntPtr.Zero);if (MyCamera.MV_OK != nRet){Console.WriteLine("Register image callback failed!");break;}// ch:开启抓图 || en: start grab imagenRet = device.MV_CC_StartGrabbing_NET();if (MyCamera.MV_OK != nRet){Console.WriteLine("Start grabbing failed:{0:x8}", nRet);break;}Console.WriteLine("Press enter to exit");Console.ReadLine();// ch:停止抓图 | en:Stop grabbingnRet = device.MV_CC_StopGrabbing_NET();if (MyCamera.MV_OK != nRet){Console.WriteLine("Stop grabbing failed:{0:x8}", nRet);break;}// ch:关闭设备 | en:Close devicenRet = device.MV_CC_CloseDevice_NET();if (MyCamera.MV_OK != nRet){Console.WriteLine("Close device failed:{0:x8}", nRet);break;}// ch:销毁设备 | en:Destroy devicenRet = device.MV_CC_DestroyDevice_NET();if (MyCamera.MV_OK != nRet){Console.WriteLine("Destroy device failed:{0:x8}", nRet);break;}} while (false);if (MyCamera.MV_OK != nRet){// ch:销毁设备 | en:Destroy devicenRet = device.MV_CC_DestroyDevice_NET();if (MyCamera.MV_OK != nRet){Console.WriteLine("Destroy device failed:{0:x8}", nRet);}}// ch: 反初始化SDK | en: Finalize SDKMyCamera.MV_CC_Finalize_NET();Console.WriteLine("Press enter to exit");Console.ReadKey();}}
}

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