using HalconDotNet;
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using LB_SmartVisionCommon;
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using LB_VisionControls;
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using OpenCvSharp;
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using System;
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using System.Collections.Generic;
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using System.Drawing;
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using System.Linq;
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using System.Security.Cryptography;
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using System.Text;
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using System.Threading.Tasks;
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using ZXing;
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using ZXing.Common;
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using ZXing.Multi.QrCode;
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namespace LB_VisionProcesses.Alogrithms
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{
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public class FindCode2dTool : TAlgorithm
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{
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public enum Code2dType { None, QRCode, BarCode };
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BarcodeReader<Bitmap> zx_BarCodeHandle = null;
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QRCodeMultiReader zx_QRCodeHandle = null;
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public FindCode2dTool()
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{
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strProcessClass = "LB_VisionProcesses.Alogrithms.FindCode2dTool";
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strProcessName = "Z读码工具";
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//创建一个条码模型
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zx_BarCodeHandle = CreateCodeMode();
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zx_QRCodeHandle = CreateQRCodeMode();
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Params.Inputs.Add("Code2dType", "BarCode");
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Params.Inputs.Add("CodeHead", "");
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Params.Inputs.Add("CodeLength", 0);
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Params.Inputs.Add("MinThreshold", 80);
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Params.Inputs.Add("MaxThreshold", 180);
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Params.Inputs.Add("MinCount", 0);
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Params.Inputs.Add("MaxCount", 9999);
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Params.Outputs.Add("CodeStrings", new List<string>());
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}
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private static readonly object lockObj = new object();
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/// <summary>
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/// 算子逻辑
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/// </summary>
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public override void TAlgorithmMain()
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{
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lock (lockObj)
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{
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#region 初始化变量
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ZXing.Result[] results = null;
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#endregion
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try
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{
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if (InputImage == null)
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{
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Msg = "输入图片为空";
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Result = false;
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AsyncLogHelper.Error(Msg);
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return;
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}
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if (!(InputImage is Mat))
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{
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Msg = "输入图片格式不为Mat";
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Result = false;
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AsyncLogHelper.Error(Msg);
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return;
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}
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object DomainImage = null;
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#region 裁剪区域
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if (!ReduceDomainImage(InputImage, ref DomainImage))
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{
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Msg = "裁剪区域失败";
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Result = false;
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AsyncLogHelper.Error(Msg);
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return;
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}
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this.Record = new MsgRecord();
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#endregion
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#region 算子逻辑
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Bitmap hoDomainImage = null;
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Mat mGray = new Mat();
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//ZXing针对识别灰度图像效果更好，所以这里转换为灰度图像
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if (((Mat)DomainImage).Channels() == 3)
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{
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Cv2.CvtColor(((Mat)DomainImage), mGray, ColorConversionCodes.BGR2GRAY);
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}
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else
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{
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mGray = ((Mat)DomainImage).Clone();
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}
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//高斯模糊的 Size(3,3) 和二值化的 blockSize=11 需根据图像分辨率调整。
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if (true)
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{
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/*降噪（高斯模糊或中值滤波）*/
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//高斯模糊：适合轻度噪声
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//Cv2.GaussianBlur(mGray, mGray, new OpenCvSharp.Size(3, 3), 0);
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//中值滤波：适合椒盐噪声
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//Cv2.MedianBlur(mGray, mGray, 3);
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/*锐化*/
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//Mat sharpened = new Mat();
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//float[] kernelData = { 0, -1, 0, -1, 5, -1, 0, -1, 0 };
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//Mat kernel = Mat.FromArray(kernelData).Reshape(1, 3); // 转换为 3x3 矩阵
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//Cv2.Filter2D(mGray, mGray, -1, kernel);
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/*二值化*/
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//自适应阈值（推荐光照不均场景）
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//Cv2.AdaptiveThreshold(mGray, mGray, 255, AdaptiveThresholdTypes.GaussianC, ThresholdTypes.Binary, 11, 2);
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//大津算法（OTSU）
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//Cv2.Threshold(mGray, mGray, 0, 255, ThresholdTypes.Binary | ThresholdTypes.Otsu);
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/*透视校正（倾斜条码）*/
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//// 检测条码轮廓并找到四个角点
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//Point2f[] corners = FindBarcodeCorners(binary);
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//if (corners != null)
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//{
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// Mat warpMat = Cv2.GetPerspectiveTransform(corners, new Point2f[] { ... });
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// Cv2.WarpPerspective(binary, binary, warpMat, binary.Size());
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//}
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}
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//将Mat转换为Bitmap，供ZXing使用
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TAlgorithm.Mat2Bitmap(mGray, out hoDomainImage);
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string CodeHead = (ProcessParams.ConvertToString(Params.Inputs["CodeHead"])).TrimEnd();
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int CodeLength = ProcessParams.ConvertToInt32(Params.Inputs["CodeLength"]);
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// 尝试转换字符串为枚举类型
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if (!Enum.TryParse(ProcessParams.ConvertToString(Params.Inputs["Code2dType"]), out Code2dType eCode2dType))
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{
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eCode2dType = Code2dType.None;
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}
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if (string.IsNullOrEmpty(CodeHead) || CodeHead.Trim() == "")
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{
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switch (eCode2dType)
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{
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case Code2dType.None:
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{
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break;
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}
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case Code2dType.QRCode:
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{
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TAlgorithm.Bitmap2BinaryBitmap(hoDomainImage, out BinaryBitmap binaryBitmap);
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results = zx_QRCodeHandle.decodeMultiple(binaryBitmap);
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TAlgorithm.BinaryBitmap2Bitmap(binaryBitmap, out hoDomainImage);
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break;
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}
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case Code2dType.BarCode:
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{
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results = zx_BarCodeHandle.DecodeMultiple(hoDomainImage);
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break;
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}
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}
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}
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else
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{
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//色阶映射，增强图像对比度
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//scale_gray_map(hoDomainImage, out HObject ho_Image2, i, j);
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switch (eCode2dType)
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{
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case Code2dType.None:
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{
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break;
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}
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case Code2dType.QRCode:
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{
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TAlgorithm.Bitmap2BinaryBitmap(hoDomainImage, out BinaryBitmap binaryBitmap);
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results = zx_QRCodeHandle.decodeMultiple(binaryBitmap);
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TAlgorithm.BinaryBitmap2Bitmap(binaryBitmap, out hoDomainImage);
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break;
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}
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case Code2dType.BarCode:
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{
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results = zx_BarCodeHandle.DecodeMultiple(hoDomainImage);
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break;
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}
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}
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if (results != null)
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{
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List<string> listCodeStrings = new List<string>();
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foreach (var result in results)
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{
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string strBarCode = result.Text;
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if (strBarCode.StartsWith(CodeHead) && strBarCode.Length == CodeLength)
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{
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var points = result.ResultPoints;
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((MsgRecord)Record).AddRecord(strBarCode, points[0].Y, points[0].X);
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OutputImage = hoDomainImage;
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listCodeStrings.Add(strBarCode);
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Params.Outputs["CodeStrings"] = listCodeStrings;
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Params.Outputs["Count"] = 1;
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Msg = "运行成功";
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Result = true;
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return;
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}
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}
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}
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OutputImage = null;
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Params.Outputs["CodeStrings"] = null;
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Params.Outputs["Count"] = 0;
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if (CodeLength > 0)
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{
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Msg = string.Format("没有找到指定头为\"{0}\"且长度为\"{1}\"的码", CodeHead, CodeLength);
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}
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else
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{
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Msg = string.Format("没有找到指定头为\"{0}\"码", CodeHead);
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}
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Result = false;
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AsyncLogHelper.Info(Msg);
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return;
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}
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#endregion
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#region 结果处理
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List<string> CodeStrings = new List<string>();
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if (results != null)
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{
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foreach (var result in results)
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{
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CodeStrings.Add(result.Text);
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var points = result.ResultPoints;
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((MsgRecord)Record).AddRecord(result.Text, points[0].Y, points[0].X);
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}
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}
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Params.Outputs["CodeStrings"] = CodeStrings;
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Params.Outputs["Count"] = CodeStrings.Count;
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#endregion
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#region 生成OutputImage给后续处理
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try
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{
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OutputImage = hoDomainImage;
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}
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catch (Exception ex)
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{
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Msg = "生成OutputImage失败,原因是:" + ex.ToString();
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Result = false;
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AsyncLogHelper.Error(Msg);
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return;
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}
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#endregion
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if (Msg == "运行超时")
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{
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Result = false;
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return;
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}
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int MinCount = ProcessParams.ConvertToInt32(Params.Inputs["MinCount"]);
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int MaxCount = ProcessParams.ConvertToInt32(Params.Inputs["MaxCount"]);
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if (CodeStrings.Count < MinCount || CodeStrings.Count > MaxCount)
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{
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Msg = string.Format("结果个数超出范围({0},{1})", MinCount, MaxCount);
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Result = false;
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AsyncLogHelper.Error(Msg);
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return;
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}
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Msg = "运行成功";
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Result = true;
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return;
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}
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catch (Exception ex)
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{
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Msg = "运行失败,原因是:" + ex.ToString().TrimEnd();
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OutputImage = null;
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Result = false;
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AsyncLogHelper.Error(Msg);
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return;
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}
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finally
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{
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if (!Result)
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{
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Params.Outputs["CodeStrings"] = "";
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Params.Outputs["Count"] = 0;
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}
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bCompleted = true;
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#region 内存释放
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#endregion
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}
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}
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}
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/// <summary>
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/// 创建条码类型
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/// </summary>
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public BarcodeReader<Bitmap> CreateCodeMode()
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{
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return new BarcodeReader<Bitmap>(null)
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{
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Options = new DecodingOptions
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{
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TryHarder = true,
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PossibleFormats = new[]
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{
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//一维码
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BarcodeFormat.All_1D
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//, BarcodeFormat.EAN_13
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//, BarcodeFormat.EAN_8
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//, BarcodeFormat.CODE_39
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//, BarcodeFormat.CODE_93
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//, BarcodeFormat.CODE_128
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//, BarcodeFormat.CODABAR
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}
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},
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AutoRotate = true,
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};
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}
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public QRCodeMultiReader CreateQRCodeMode()
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{
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return new QRCodeMultiReader();
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//return new BarcodeReader
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//{
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// Options = new DecodingOptions
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// {
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// TryHarder = true,
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// PossibleFormats = new[]
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// {
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// //这个是二维码
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// BarcodeFormat.QR_CODE
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// //, BarcodeFormat.DATA_MATRIX
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// //, BarcodeFormat.MAXICODE
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// //, BarcodeFormat.AZTEC
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// }
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// },
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// AutoRotate = true,
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//};
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}
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}
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}
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