c# 链接相机 vericode解码小程序
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1.程序主体
2.演示效果
3.检测类
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 System.Runtime.InteropServices;
using System.Drawing.Imaging;
using System.IO;
using HalconDotNet;
namespace VeriCode_Demo
{
public partial class Form1 : Form
{
//---------------------------------------------------------------解码
[DllImport("VRdll.dll", EntryPoint = "vcRead", CharSet = CharSet.Ansi, CallingConvention = CallingConvention.Cdecl)]
private static extern short vcRead(short xSize, short ySize, int pimg, StringBuilder msg, int IsContrastNormal, ref short vcCorners, short SampleWidth, short BitsPerCell, short Prefiltering);
[DllImport("VRdll.dll", EntryPoint = "GetDllVersion", CharSet = CharSet.Ansi, CallingConvention = CallingConvention.Cdecl)]
private static extern short GetDllVersion(StringBuilder szbuf, int nBufSize);
[DllImport("VRdll.dll", EntryPoint = "GetSymbolCorners", CharSet = CharSet.Ansi, CallingConvention = CallingConvention.Cdecl)]
private static extern void GetSymbolCorners(ref short szbuf);
[DllImport("kernel32.dll", EntryPoint = "RtlMoveMemory", CharSet = CharSet.Ansi)]
public extern static long CopyMemory(int dest, int source, int size);
int mwidth, mheight;
int pt;
byte[] byteAry;
int totbyte;
bool demo;
short minVericode_length;
BitmapData bitmapData;
Rectangle rect;
Pen RedPen = new Pen(Color.Lime, 3);
bool License;
public Form1()
{
InitializeComponent();
}
bool openCamear = false;//控制相机开关
GrabImage grabimg = new GrabImage();//实例化GrabImage类
//连接相机
private void button1_Click(object sender, EventArgs e)
{
if (openCamear == false)
{
openCamear = true;
grabimg.open();//调用open方法
textBox1.AppendText("相机连接成功！" + "\\r\\n");
}
else
{
MessageBox.Show("相机已打开！");
}
}
//单次采集图片
private void button2_Click(object sender, EventArgs e)
{
if (openCamear == true)
{
timer1.Enabled = false;
Bitmap img = grabimg.grabimage();
listBox1_SelectedIndexChanged(img);
}
else
{
MessageBox.Show("相机未打开！");
}
}
private void Form1_Load(object sender, EventArgs e)
{
}
//退出
private void button4_Click(object sender, EventArgs e)
{
System.Environment.Exit(0);
}
//连续采集图片
private void button5_Click(object sender, EventArgs e)
{
if (openCamear == true)
{
timer1.Enabled = true;
}
else
{
MessageBox.Show("相机未打开！");
}
}
//关闭相机
private void button6_Click(object sender, EventArgs e)
{
if (openCamear == true)
{
openCamear = false;
timer1.Enabled = false;
grabimg.close();
}
else
{
MessageBox.Show("相机已关闭！");
}
}
//获取图片
private void timer1_Tick(object sender, EventArgs e)
{
Bitmap img= grabimg.grabimage();
listBox1_SelectedIndexChanged(img);
}
//加载图片
private void button3_Click_1(object sender, EventArgs e)
{
//选择文件
OpenFileDialog dialog = new OpenFileDialog();
dialog.Multiselect = false;//该值确定是否可以选择多个文件
dialog.Title = "打开文件";
dialog.Filter = "图片|*.jpg;*.png;*.gif;*.jpeg;*.bmp";
if (dialog.ShowDialog() == System.Windows.Forms.DialogResult.OK)
{
string file = dialog.FileName;
Bitmap img = (Bitmap)Image.FromFile(file);
listBox1_SelectedIndexChanged(img);
}
}
private void listBox1_SelectedIndexChanged(Bitmap img)
{
//Bitmap img;
int[] ptr = new int[2];
byte[] tmp_data;
int i;
int j;
rect = new Rectangle(0, 0, img.Width, img.Height);
pictureBox1.Image = img;
pictureBox1.Refresh();
mwidth = img.Width;
mheight = img.Height;
switch (img.PixelFormat)
{
case PixelFormat.Format8bppIndexed:
totbyte = img.Width * img.Height;
byteAry = new byte[totbyte];
bitmapData = img.LockBits(rect, ImageLockMode.ReadOnly, PixelFormat.Format8bppIndexed);
ptr[0] = VarPtr(byteAry);
ptr[1] = bitmapData.Scan0.ToInt32();
if (mwidth % 4 == 0)
{
CopyMemory(ptr[0], ptr[1], totbyte);
}
else
{
for (i = 0; i < mheight; i += 1)
{
CopyMemory(ptr[0], ptr[1], mwidth);
ptr[0] += mwidth;
ptr[1] += bitmapData.Stride;
}
}
img.UnlockBits(bitmapData);
break;
case PixelFormat.Format24bppRgb:
totbyte = img.Width * img.Height * 3;
tmp_data = new byte[totbyte];
byteAry = new byte[totbyte / 3];
bitmapData = img.LockBits(rect, ImageLockMode.ReadOnly, PixelFormat.Format24bppRgb);
ptr[0] = VarPtr(tmp_data);
ptr[1] = bitmapData.Scan0.ToInt32();
if (mwidth % 4 == 0)
{
CopyMemory(ptr[0], ptr[1], totbyte);
}
else
{
for (i = 0; i < mheight; i += 1)
{
CopyMemory(ptr[0], ptr[1], mwidth * 3);
ptr[0] += mwidth * 3;
ptr[1] += bitmapData.Stride;
}
}
img.UnlockBits(bitmapData);
j = 0;
for (i = 0; i < totbyte; i += 3)
{
byteAry[j] = tmp_data[i];
j++;
}
break;
}
pt = VarPtr(byteAry);
Chk_Vericode();
}
//指针地址
private int VarPtr(object obj)
{
int returnValue;
GCHandle GC = GCHandle.Alloc(obj, GCHandleType.Pinned);
returnValue = GC.AddrOfPinnedObject().ToInt32();
GC.Free();
return returnValue;
}
private void Chk_Vericode()
{
short intRetCode = 0;
string pucUserData = "";
int pucMono;
short[] vcCorners = new short[8];
Point[] UL = new Point[2];
Point[] UR = new Point[2];
Point[] LL = new Point[2];
Point[] LR = new Point[2];
bool fg;
int t1;
int t2;
Bitmap img1;
Graphics g;
pucMono = pt;
t1 = Environment.TickCount;
fg = Decode_Vericode((short)mwidth, (short)mheight, pucMono, ref pucUserData, ref vcCorners, ref intRetCode, demo, minVericode_length);
t2 = Environment.TickCount;
t2 = ((t2 < t1) ? (int)(49.7 * 86400000 + t2) : t2);
if (fg)
{
UL[0].X = vcCorners[0];
UL[0].Y = mheight - vcCorners[1] - 1;
UL[1].X = vcCorners[2];
UL[1].Y = mheight - vcCorners[3] - 1;
UR[0].X = vcCorners[2];
UR[0].Y = mheight - vcCorners[3] - 1;
UR[1].X = vcCorners[6];
UR[1].Y = mheight - vcCorners[7] - 1;
LL[0].X = vcCorners[6];
LL[0].Y = mheight - vcCorners[7] - 1;
LL[1].X = vcCorners[4];
LL[1].Y = mheight - vcCorners[5] - 1;
LR[0].X = vcCorners[4];
LR[0].Y = mheight - vcCorners[5] - 1;
LR[1].X = vcCorners[0];
LR[1].Y = mheight - vcCorners[1] - 1;
img1 = new Bitmap(mwidth, mheight);
g = Graphics.FromImage(img1);
g.DrawImage(pictureBox1.Image, 0, 0, mwidth, mheight);
g.DrawLine(RedPen, UL[0].X, UL[0].Y, UL[1].X, UL[1].Y);
g.DrawLine(RedPen, UR[0].X, UR[0].Y, UR[1].X, UR[1].Y);
g.DrawLine(RedPen, LL[0].X, LL[0].Y, LL[1].X, LL[1].Y);
g.DrawLine(RedPen, LR[0].X, LR[0].Y, LR[1].X, LR[1].Y);
Font font = new System.Drawing.Font("宋体", 18);
SolidBrush brush = new SolidBrush(Color.Lime);
g.DrawString(pucUserData, font, brush, LR[1].X, LR[1].Y);
pictureBox1.Image = img1;
textBox1.AppendText( "\\r\\n\\r\\nCode : " + pucUserData);
}
else
{
textBox1.AppendText( "\\r\\n\\r\\nCode : No Data Decoded&#以上是关于c# 链接相机 vericode解码小程序的主要内容，如果未能解决你的问题，请参考以下文章