/// <summary>
/// Loads image from file, binarize and rotate it and returns KrecImage
/// </summary>
/// <param name="path">Image path</param>
/// <param name="deskewParameters">The information on how the image has been deskewed</param>
/// <returns>Binarized and rotated image with deskew parameters</returns>
public static KrecImage LoadAlignedBinarisedImageFromFile(string path, out DeskewParameters deskewParameters)
{
var sourceImage = KrecImage.FromFile(path);
var binarizedImage = sourceImage.Binarize();
deskewParameters = FastImageDeskewer.GetDeskewParameters(binarizedImage);
return(RotateGrayscaleImage(binarizedImage, deskewParameters.AngleRadians));
}
/// <summary>
/// Scales given recognition results by specified factor
/// </summary>
/// <param name="source">The results of OCR to process</param>
/// <param name="scaleFactor"></param>
/// <returns>Recognition results which are guaranteed to be deskewed</returns>
public static RecognitionResult Scale(this RecognitionResult source, double scaleFactor)
{
var targetModel = source.GeometryModel.ScaleModel(scaleFactor);
var deskewParameters = source.DeskewParameters;
if (deskewParameters != null)
{
var sourceBoundingBoxScaled = DeskewProcessor.ScaleBoundingBox(new BoundingBox(0, 0, deskewParameters.SourceWidth, deskewParameters.SourceHeight), scaleFactor);
deskewParameters = new DeskewParameters(sourceBoundingBoxScaled.Width, sourceBoundingBoxScaled.Height, deskewParameters.AngleRadians);
return(new RecognitionResult(targetModel, deskewParameters));
}
return(new RecognitionResult(targetModel));
}
/// <summary>
/// Creates new instance of recognition results assuming that results are not deskewed
/// </summary>
/// <param name="geometryModel"></param>
public RecognitionResult(TextGeometryModel geometryModel)
{
this.geometryModel = geometryModel;
deskewParameters = null;
isDeskewed = false;
}
/// <summary>
/// Creates new instance of recognition results assuming that results are deskewed with given transformation
/// </summary>
/// <param name="geometryModel">The model to store</param>
/// <param name="deskewParameters">The set of deskew transformation parameters</param>
public RecognitionResult([NotNull] TextGeometryModel geometryModel, [NotNull] DeskewParameters deskewParameters)
{
this.geometryModel = geometryModel;
this.deskewParameters = deskewParameters;
isDeskewed = true;
}