public static Bitmap DetectLines(Bitmap target, ThresholdParams param)
{
var newTarget = new Bitmap(target.Width, target.Height);
var points = DetectContourPoints(target, param);
BitmapData targetData1 = target.LockBits(
new Rectangle(0, 0, target.Width, target.Height),
ImageLockMode.ReadWrite, target.PixelFormat);
byte[] targetData = new byte[targetData1.Stride * targetData1.Height];
byte[] newTargetData = new byte[targetData.Length];
var lines = LineRecognizer.RecognizeLines(ref points, target.Size.Width, target.Size.Height);
newTarget = new Bitmap(target.Width, target.Height, targetData1.Stride,
target.PixelFormat,
Marshal.UnsafeAddrOfPinnedArrayElement(newTargetData, 0));
var graphics = Graphics.FromImage(newTarget);
foreach (var elem in points)
{
newTarget.SetPixel(elem.X, elem.Y, Color.Black);
}
foreach (var e in lines)
{
DrawLine(e, graphics);
}
target.UnlockBits(targetData1);
return(newTarget);
}
public static Bitmap DetectContour(Bitmap target, ThresholdParams param)
{
var points = DetectContourPoints(target, param);
var newTarget = new Bitmap(target.Width, target.Height);
foreach (var elem in points)
{
newTarget.SetPixel(elem.X, elem.Y, Color.Black);
}
return(newTarget);
}
private static List <Point> DetectContourPoints(Bitmap target, ThresholdParams param)
{
BitmapData targetData1 = target.LockBits(new Rectangle(0, 0, target.Width, target.Height), ImageLockMode.ReadWrite, target.PixelFormat);
byte[] targetData = new byte[targetData1.Stride * targetData1.Height];
Marshal.Copy(targetData1.Scan0, targetData, 0, targetData.Length);
target.UnlockBits(targetData1);
byte[] newTargetData = new byte[targetData.Length];
bool[,] mask = new bool[target.Size.Width, target.Size.Height];
List <Point> points = new List <Point>();
if (param.IsAdapt)
{
points = ThresholdAdapter.Adapt(target, param);
}
return(points);
}
