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GZ.LJY000.PiLot/HandleQRCodeByFileTool.cs

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+using OpenCvSharp;
+using Spire.OCR;
+using Spire.Pdf;
+using System;
+using System.Collections.Generic;
+using System.Drawing;
+using System.Drawing.Imaging;
+using System.IO;
+using System.Linq;
+using System.Reflection;
+using System.Text;
+using System.Threading.Tasks;
+
+
+namespace GZ.LJY000.PiLot
+{
+    public static class HandleQRCodeByFileTool
+    {
+
+        /// <summary>
+        /// 识别二维码
+        /// </summary>
+        /// <param name="src"></param>
+        /// <param name="region"></param>
+        /// <param name="isReturn"></param>
+        /// <returns></returns>
+        private static AnalyzeResult DecodeQRCodes(Mat src, Rect region, bool isReturn)
+        {
+            AnalyzeResult analyzeResult = null;
+
+            // 裁剪指定区域
+            using (Mat roi = new Mat(src, region))
+            {
+                // 转为灰度图像
+                using (Mat gray = new Mat())
+                {
+                    Cv2.CvtColor(roi, gray, ColorConversionCodes.BGR2GRAY);
+
+                    // 二值化处理
+                    using (Mat binary = new Mat())
+                    {
+                        Cv2.Threshold(gray, binary, 0, 255, ThresholdTypes.Binary | ThresholdTypes.Otsu);
+
+                        //二维码识别
+                        using (QRCodeDetector qRCodeDetector = new QRCodeDetector())
+                        {
+                            Point2f[] points;
+                            var hasQRCode = qRCodeDetector.DetectMulti(binary, out points);
+                            if (hasQRCode)
+                            {
+                                qRCodeDetector.DecodeMulti(binary, points, out string[] qrCodeTexts);
+
+                                analyzeResult = new AnalyzeResult();
+                                analyzeResult.name = qrCodeTexts[0];
+                                analyzeResult.points = points;
+                            }
+                            else
+                            {
+                                if (isReturn)
+                                    return null;
+
+                                var srcWidth = roi.Width;
+                                var srcHeight = roi.Height;
+                                int x = srcWidth / 2;
+                                int y = 0;
+                                int width = srcWidth / 2;
+                                int height = srcHeight / 2;
+
+                                var newRegion = new Rect(x, y, width, height);
+
+                                analyzeResult = DecodeQRCodes(roi, newRegion, true);
+                            }
+                        }
+                    }
+                }
+
+            }
+
+            return analyzeResult;
+        }
+
+        public class AnalyzeResult
+        {
+            public string fileName { get; set; }
+
+            public string name { get; set; }
+
+            public Point2f[] points { get; set; }
+
+        }
+    }
+}