DetectDeskewOrientationCommand Class

Summary

This command supports detecting deskew and orientation angles.

Syntax

C++/CLI

Python

public class DetectDeskewOrientationCommand : RasterCommand

public: 
   ref class DetectDeskewOrientationCommand : RasterCommand

class DetectDeskewOrientationCommand(RasterCommand):

Remarks

This command contains special algorithms for detecting skewed checks.

This command does not support signed data images.

The calculated rotation is limited to 20 degrees in either direction. This command is intended for images, such as scanned documents, that are mainly horizontal lines of text. The results are less predictable with other types of images.

This command does not support 12- and 16-bit grayscale or 48- and 64-bit color images. If the image is 12- and 16-bit grayscale or 48- and 64-bit color, the function will not return an error.

This command does not support 32-bit grayscale images.

Example

Runs the DetectDeskewOrientationCommand on an image.

using Leadtools; 
using Leadtools.Codecs; 
using Leadtools.ImageProcessing.Core; 
 
public void DetectDeskewOrientationCommandExample() 
{ 
   // Load an image  
   RasterCodecs codecs = new RasterCodecs(); 
   codecs.ThrowExceptionsOnInvalidImages = true; 
 
   RasterImage image = codecs.Load(Path.Combine(LEAD_VARS.ImagesDir, @"Forms\Forms to be Recognized\OCR\FCC-107_OCR_Filled.tif")); 
 
   // Prepare the command  
   DetectDeskewOrientationCommand command = new DetectDeskewOrientationCommand(); 
   // Detect/correct skew and orientation, filling with black  
   command.DeskewDetection.FillColor = RasterColor.Black; 
   command.DeskewDetection.Flags = DeskewDetectionDataFlags.DocumentAndPictures | DeskewDetectionDataFlags.RotateBicubic; 
   command.Flags = DetectDeskewOrientationCommandFlags.None; 
   command.OrientationDetection.Flags = OrientationDetectionDataFlags.None; 
   command.Run(image);  
} 
 
static class LEAD_VARS 
{ 
   public const string ImagesDir = @"C:\LEADTOOLS23\Resources\Images"; 
}