HOW TO: Detect and Redact MICR from files

#1 Posted : Tuesday, May 14, 2019 1:42:14 PM(UTC)

Hadi

Groups: Manager, Tech Support, Administrators
Posts: 218

Was thanked: 12 time(s) in 12 post(s)

Attached is a project that will load all files in a given directory and try to detect if any MICRs are present using the MICRCodeDetectionCommand and CMC7CodeDetectionCommand commands.

Once the zones are found on every page, a redaction annotation is added and burned into the image and then saved out. Here is the relevant code:

Code:

static void DetectRedact(string file)
      {
         AnnWinFormsRenderingEngine renderingEngine = new AnnWinFormsRenderingEngine();

         var dir = Path.Combine(Path.GetDirectoryName(file), "Redacted");
         if (!Directory.Exists(dir))
            Directory.CreateDirectory(dir);
         string outFile = Path.Combine(dir, Path.GetFileNameWithoutExtension(file) + "_redacted.tif");

         int totalPages = codecs.GetTotalPages(file);
         for (int i = 1; i <= totalPages; i++)
            using (RasterImage image = codecs.Load(file, i))
            {
               AnnContainer container = new AnnContainer();
               container.Mapper.MapResolutions(image.XResolution, image.YResolution, image.XResolution, image.YResolution);
               container.Size = container.Mapper.SizeToContainerCoordinates(image.ImageSize.ToLeadSizeD());

               MICRCodeDetectionCommand detectionCommand = new MICRCodeDetectionCommand();
               detectionCommand.Run(image);
               if (detectionCommand.MICRZone != LeadRect.Empty && detectionCommand.MICRZone.Width > 0 && detectionCommand.MICRZone.Height > 0)
               {
                  AnnRedactionObject redaction = new AnnRedactionObject
                  {
                     Rect = container.Mapper.RectToContainerCoordinates(detectionCommand.MICRZone.ToLeadRectD()),
                     Fill = AnnSolidColorBrush.Create("Black")
                  };
                  container.Children.Add(redaction);
               }

               CMC7CodeDetectionCommand cmc7DetectionCommand = new CMC7CodeDetectionCommand();
               cmc7DetectionCommand.Run(image);
               if (cmc7DetectionCommand.CMC7Zone != LeadRect.Empty && cmc7DetectionCommand.CMC7Zone.Width > 0 && cmc7DetectionCommand.CMC7Zone.Height > 0)
               {
                  AnnRedactionObject redaction = new AnnRedactionObject
                  {
                     Rect = container.Mapper.RectToContainerCoordinates(cmc7DetectionCommand.CMC7Zone.ToLeadRectD()),
                     Fill = AnnSolidColorBrush.Create("Black")
                  };
                  container.Children.Add(redaction);
               }

               var img = renderingEngine.RenderOnImage(container, image.Clone());

               codecs.Save(img, outFile, RasterImageFormat.TifJpeg411, 24, 1, 1, 1, CodecsSavePageMode.Append);
            }
      }

File Attachment(s):

micr_redact.zip (4kb) downloaded 149 time(s).

Hadi Chami
Developer Support Manager
LEAD Technologies, Inc.

#2 Posted : Thursday, March 26, 2020 9:09:43 AM(UTC)

Luke Duvall

Groups: Registered, Tech Support, Administrators
Posts: 34

Updated Project to LEADTOOLS Version 20 using Visual Studio 2019

File Attachment(s):

micr_redact.zip (4kb) downloaded 55 time(s).

Luke Duvall
Developer Support Engineer
LEAD Technologies, Inc.


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HOW TO: Detect and Redact MICR from files