/// <summary>
/// Determines the scew angle and if confidence is high enough returns the descewed image as the result, otherwise returns clone of original image.
/// </summary>
/// <remarks>
/// This binarizes if necessary and finds the skew angle. If the
/// angle is large enough and there is sufficient confidence,
/// it returns a deskewed image; otherwise, it returns a clone.
/// </remarks>
/// <param name="sweep">linear sweep parameters</param>
/// <param name="redSearch">The reduction factor used by the binary search, can be 1, 2, or 4.</param>
/// <param name="thresh">The threshold value used for binarizing the image.</param>
/// <param name="scew">The scew angle and confidence</param>
/// <returns>Returns deskewed image if confidence was high enough, otherwise returns clone of original pix.</returns>
public Pix Deskew(ScewSweep sweep, int redSearch, int thresh, out Scew scew)
{
float pAngle, pConf;
var resultPixHandle = Interop.LeptonicaApi.Native.pixDeskewGeneral(handle, sweep.Reduction, sweep.Range, sweep.Delta, redSearch, thresh, out pAngle, out pConf);
if (resultPixHandle == IntPtr.Zero)
{
throw new TesseractException("Failed to deskew image.");
}
scew = new Scew(pAngle, pConf);
return(new Pix(resultPixHandle));
}
public bool Equals(Scew other)
{
return(this.confidence == other.confidence && this.angle == other.angle);
}
/// <summary>
/// Determines the scew angle and if confidence is high enough returns the descewed image as the result, otherwise returns clone of original image.
/// </summary>
/// <remarks>
/// This binarizes if necessary and finds the skew angle. If the
/// angle is large enough and there is sufficient confidence,
/// it returns a deskewed image; otherwise, it returns a clone.
/// </remarks>
/// <param name="redSearch">The reduction factor used by the binary search, can be 1, 2, or 4.</param>
/// <param name="scew">The scew angle and confidence</param>
/// <returns>Returns deskewed image if confidence was high enough, otherwise returns clone of original pix.</returns>
public Pix Deskew(int redSearch, out Scew scew)
{
return(Deskew(ScewSweep.Default, redSearch, DefaultBinaryThreshold, out scew));
}
/// <summary>
/// Determines the scew angle and if confidence is high enough returns the descewed image as the result, otherwise returns clone of original image.
/// </summary>
/// <remarks>
/// This binarizes if necessary and finds the skew angle. If the
/// angle is large enough and there is sufficient confidence,
/// it returns a deskewed image; otherwise, it returns a clone.
/// </remarks>
/// <param name="scew">The scew angle and confidence</param>
/// <returns>Returns deskewed image if confidence was high enough, otherwise returns clone of original pix.</returns>
public Pix Deskew(out Scew scew)
{
return(Deskew(DefaultBinarySearchReduction, out scew));
}
