/// <summary>
/// Converts the specified <paramref name="img"/> to a <see cref="Pix"/>.
/// </summary>
/// <param name="img">The source image to be converted.</param>
/// <returns>The converted pix.</returns>
public Pix Convert(Bitmap img)
{
var pixDepth = GetPixDepth(img.PixelFormat);
var pix = Pix.Create(img.Width, img.Height, pixDepth);
pix.XRes = (int)Math.Round(img.HorizontalResolution);
pix.YRes = (int)Math.Round(img.VerticalResolution);
BitmapData imgData = null;
PixData pixData = null;
try
{
// TODO: Set X and Y resolution
if ((img.PixelFormat & PixelFormat.Indexed) == PixelFormat.Indexed)
{
CopyColormap(img, pix);
}
// transfer data
imgData = img.LockBits(new Rectangle(0, 0, img.Width, img.Height), ImageLockMode.ReadOnly, img.PixelFormat);
pixData = pix.GetData();
if (imgData.PixelFormat == PixelFormat.Format32bppArgb)
{
TransferDataFormat32bppArgb(imgData, pixData);
}
else if (imgData.PixelFormat == PixelFormat.Format32bppRgb)
{
TransferDataFormat32bppRgb(imgData, pixData);
}
else if (imgData.PixelFormat == PixelFormat.Format24bppRgb)
{
TransferDataFormat24bppRgb(imgData, pixData);
}
else if (imgData.PixelFormat == PixelFormat.Format8bppIndexed)
{
TransferDataFormat8bppIndexed(imgData, pixData);
}
else if (imgData.PixelFormat == PixelFormat.Format1bppIndexed)
{
TransferDataFormat1bppIndexed(imgData, pixData);
}
return(pix);
}
catch (Exception)
{
pix.Dispose();
throw;
}
finally
{
if (imgData != null)
{
img.UnlockBits(imgData);
}
}
}
public void ReadImageToPix()
{
Mock <IReadPicture> mock = new Mock <IReadPicture>();
mock.Setup(m => m.ReadImageFromFile("Test"))
.Returns(Pix.Create(200, 200, 32));
Ocr ocr = new Ocr(mock.Object);
var test = ocr.ReadFile("Test");
Assert.True(test);
}
public void CanReadAndWriteData(int depth)
{
using (var pix = Pix.Create(Width, Height, depth))
{
var pixData = pix.GetData();
for (var y = 0; y < Height; y++)
{
var line = (uint *)pixData.Data + (y * pixData.WordsPerLine);
for (var x = 0; x < Width; x++)
{
var val = (uint)((y * Width + x) % (1 << depth));
uint readVal;
if (depth == 1)
{
PixData.SetDataBit(line, x, val);
readVal = PixData.GetDataBit(line, x);
}
else if (depth == 2)
{
PixData.SetDataDIBit(line, x, val);
readVal = PixData.GetDataDIBit(line, x);
}
else if (depth == 4)
{
PixData.SetDataQBit(line, x, val);
readVal = PixData.GetDataQBit(line, x);
}
else if (depth == 8)
{
PixData.SetDataByte(line, x, val);
readVal = PixData.GetDataByte(line, x);
}
else if (depth == 16)
{
PixData.SetDataTwoByte(line, x, val);
readVal = PixData.GetDataTwoByte(line, x);
}
else if (depth == 32)
{
PixData.SetDataFourByte(line, x, val);
readVal = PixData.GetDataFourByte(line, x);
}
else
{
throw new NotSupportedException();
}
Assert.AreEqual(readVal, val);
}
}
}
}
private int OCRNumber(Mat skillValue, string name = "")
{
if (!string.IsNullOrEmpty(name))
{
//skillValue.SaveImage($"{name}.png");
}
Pix pix;
if (skillValue.Type() == MatType.CV_8UC3)
{
// 3 bytes
pix = Pix.Create(skillValue.Width, skillValue.Height, 32);
pix.XRes = 72;
pix.YRes = 72;
PixData pixData = null;
try
{
pixData = pix.GetData();
MatOfByte3 mat3 = new MatOfByte3(skillValue);
TransferData(mat3, pixData);
}
catch (Exception)
{
pix.Dispose();
//throw;
return(0);
}
}
else
{
skillValue.SaveImage("temp.png");
pix = Pix.LoadFromFile("temp.png");
}
using (Page resultPage = _tessEngine.Process(pix))
{
string data = resultPage.GetText();
if (int.TryParse(data, out int result))
{
return(result);
}
}
return(0);
}
public unsafe static OcrNode OCR(
TesseractEngine engine,
Mat input,
int resolution)
{
using var pix = Pix.Create(input.Width, input.Height, 8);
pix.XRes = resolution;
pix.YRes = resolution;
var pixData = pix.GetData();
var data = (uint *)pixData.Data;
var wordsPerLine = pixData.WordsPerLine;
input.ForEachAsByte((value, position) =>
{
var y = position[0];
var x = position[1];
var color = *value;
PixData.SetDataByte(data + y * wordsPerLine, x, color);
});
using var page = engine.Process(pix);
var ocrPage = page.GetTsvText(1).
Split("\n", StringSplitOptions.RemoveEmptyEntries).
Select(line => line.Split("\t")).
Select(columns => new OcrNode
{
Level = int.Parse(columns[0]),
PageNum = int.Parse(columns[1]),
BlockNum = int.Parse(columns[2]),
ParNum = int.Parse(columns[3]),
LineNum = int.Parse(columns[4]),
WordNum = int.Parse(columns[5]),
Left = int.Parse(columns[6]),
Top = int.Parse(columns[7]),
Width = int.Parse(columns[8]),
Height = int.Parse(columns[9]),
Confidence = int.Parse(columns[10]),
Text = columns.Length > 11 ? columns[11] : null
}).
Aggregate((prev, next) =>
{
if (prev == null)
{
if (next.Level != 1)
{
throw new InvalidOperationException("nodes");
}
}
else
{
if ((next.Level <= 0) || (next.Level > prev.Level + 1))
{
throw new InvalidOperationException("nodes");
}
while (next.Level != prev.Level + 1)
{
prev = prev.Parent;
}
next.Parent = prev;
if (prev.Children == null)
{
prev.Children = new List <OcrNode>();
}
next.Parent.Children.Add(next);
}
return(next);
});
while (ocrPage.Parent != null)
{
ocrPage = ocrPage.Parent;
}
ocrPage.Text = page.GetText();
return(ocrPage);
}
