C# 根据照片识别条形码

【实例截图】

【核心代码】

/// <summary>
        /// 条码识别
        /// </summary>
        privatevoidScanBarCode(stringfileName)
        {
            DateTime now = DateTime.Now;
            Image primaryImage = Image.FromFile(fileName);
 
            Bitmap pImg = MakeGrayscale3((Bitmap)primaryImage);
            using(ZBar.ImageScanner scanner =newZBar.ImageScanner())
            {
                scanner.SetConfiguration(ZBar.SymbolType.None, ZBar.Config.Enable, 0);
                scanner.SetConfiguration(ZBar.SymbolType.CODE39, ZBar.Config.Enable, 1);
                scanner.SetConfiguration(ZBar.SymbolType.CODE128, ZBar.Config.Enable, 1);
 
                List<ZBar.Symbol> symbols =newList<ZBar.Symbol>();
                symbols = scanner.Scan((Image)pImg);
 
                if(symbols !=null&& symbols.Count > 0)
                {
                    stringresult =string.Empty;
                    symbols.ForEach(s => result ="条码内容:" s.Data " 条码质量:" s.Quality Environment.NewLine);
                    MessageBox.Show(result);
                }
            }
        }
 
        /// <summary>
        /// 处理图片灰度
        /// </summary>
        /// <param name="original"></param>
        /// <returns></returns>
        publicstaticBitmap MakeGrayscale3(Bitmap original)
        {
            //create a blank bitmap the same size as original
            Bitmap newBitmap =newBitmap(original.Width, original.Height);
 
            //get a graphics object from the new image
            Graphics g = Graphics.FromImage(newBitmap);
 
            //create the grayscale ColorMatrix
            System.Drawing.Imaging.ColorMatrix colorMatrix =newSystem.Drawing.Imaging.ColorMatrix(
               newfloat[][]
              {
                 newfloat[] {.3f, .3f, .3f, 0, 0},
                 newfloat[] {.59f, .59f, .59f, 0, 0},
                 newfloat[] {.11f, .11f, .11f, 0, 0},
                 newfloat[] {0, 0, 0, 1, 0},
                 newfloat[] {0, 0, 0, 0, 1}
              });
 
            //create some image attributes
            ImageAttributes attributes =newImageAttributes();
 
            //set the color matrix attribute
            attributes.SetColorMatrix(colorMatrix);
 
            //draw the original image on the new image
            //using the grayscale color matrix
            g.DrawImage(original,newRectangle(0, 0, original.Width, original.Height),
               0, 0, original.Width, original.Height, GraphicsUnit.Pixel, attributes);
 
            //dispose the Graphics object
            g.Dispose();
            returnnewBitmap;
        }