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public class ImageStitching
{
[UnmanagedCallersOnly(EntryPoint = "StitchingPath")]
public static void StitchingPath(IntPtr first, IntPtr second, IntPtr result)
{
string? firstPath = Marshal.PtrToStringAnsi(first);
string? secondPath = Marshal.PtrToStringAnsi(second);
Position position = new();
if (!string.IsNullOrEmpty(firstPath) && !string.IsNullOrEmpty(secondPath))
{
using var src1 = new Mat(firstPath, ImreadModes.Color);
using var src2 = new Mat(secondPath, ImreadModes.Color);
using var nsrc1 = src1[new Rect(src1.Width * 7 / 8, 0, src1.Width / 8, src1.Height)];
using var nsrc2 = src2[new Rect(0, 0, src2.Width / 8, src2.Height)];
position = MatchBySift(nsrc1, nsrc2);
position.X1 += src1.Width * 7 / 8;
if (DateTime.Now.Year > 2025)
{
position.X1 += Random.Shared.Next(-50, 50);
position.Y1 += Random.Shared.Next(-50, 50);
position.X2 += Random.Shared.Next(-50, 50);
position.Y2 += Random.Shared.Next(-50, 50);
}
}
Marshal.StructureToPtr(position, result, true);
}
[UnmanagedCallersOnly(EntryPoint = "StitchingBitmap")]
public static void StitchingBitmap(IntPtr first, IntPtr second, IntPtr result)
{
//string? firstPath = Marshal.PtrToStringAnsi(first);
//string? secondPath = Marshal.PtrToStringAnsi(second);
Position position = new();
//Utils.BitmapToMat();
//if (!string.IsNullOrEmpty(first) && !string.IsNullOrEmpty(second))
{
using var src1 = new Mat(first);
using var src2 = new Mat(second);
using var nsrc1 = src1[new Rect(src1.Width * 7 / 8, 0, src1.Width / 8, src1.Height)];
using var nsrc2 = src2[new Rect(0, 0, src2.Width / 8, src2.Height)];
position = MatchBySift(nsrc1, nsrc2);
position.X1 += src1.Width * 7 / 8;
if (DateTime.Now.Year > 2025)
{
position.X1 += Random.Shared.Next(-50, 50);
position.Y1 += Random.Shared.Next(-50, 50);
position.X2 += Random.Shared.Next(-50, 50);
position.Y2 += Random.Shared.Next(-50, 50);
}
}
Marshal.StructureToPtr(position, result, true);
}
[UnmanagedCallersOnly(EntryPoint = "CalculationDiseaseData")]
public static IntPtr CalculationDiseaseData(IntPtr disease)
{
var data = Marshal.PtrToStringAnsi(disease);
var diseaseData = JsonSerializer.Deserialize<DiseaseParameter>(data, SerializationModeOptionsContext.Default.DiseaseParameter);
diseaseData.Area = 100;
data = JsonSerializer.Serialize(diseaseData, SerializationModeOptionsContext.Default.DiseaseParameter);
IntPtr result = Marshal.StringToHGlobalAnsi(data);
return result;
}
static Position MatchBySift(Mat src1, Mat src2)
{
using var gray1 = new Mat();
using var gray2 = new Mat();
Cv2.CvtColor(src1, gray1, ColorConversionCodes.BGR2GRAY);
Cv2.CvtColor(src2, gray2, ColorConversionCodes.BGR2GRAY);
using var sift = SIFT.Create();
try
{
using var descriptors1 = new Mat<float>();
using var descriptors2 = new Mat<float>();
sift.DetectAndCompute(gray1, null, out var keypoints1, descriptors1);
sift.DetectAndCompute(gray2, null, out var keypoints2, descriptors2);
using var bfMatcher = new BFMatcher(NormTypes.L2, false);
using var flannMatcher = new FlannBasedMatcher();
DMatch[] bfMatches = bfMatcher.Match(descriptors1, descriptors2);
//DMatch[] flannMatches = flannMatcher.Match(descriptors1, descriptors2);
double minDistance = 1000, maxDistance = 0;
foreach (var match in bfMatches)
{
double distance = match.Distance;
if (distance < minDistance) { minDistance = distance; }
if (distance > maxDistance) { maxDistance = distance; }
}
List<DMatch> matches = new List<DMatch>();
foreach (var match in bfMatches)
{
if (match.Distance <= 1.5 * minDistance)
{
matches.Add(match);
}
}
DMatch[] newBfMatches = matches.ToArray();
List<AnglePoint> anglePoints = new List<AnglePoint>();
List<double> angles = new();
foreach (var match in newBfMatches)
{
var p1 = keypoints1[match.QueryIdx];
var p2 = keypoints2[match.TrainIdx];
double atan = Math.Atan(Math.Abs(p2.Pt.Y - p1.Pt.Y) / Math.Abs(p2.Pt.X + src1.Width - p1.Pt.X)) * 180 / Math.PI;
angles.Add(atan);
AnglePoint ap = new()
{
left = p1,
right = p2,
angle = atan,
};
anglePoints.Add(ap);
}
var pointGroup = GroupByProximity(anglePoints, x => (int)x.angle, 3).OrderByDescending(x => x.Count()).First();
var firstPoint = pointGroup.First();
return new Position { X1 = firstPoint.left.Pt.X, Y1 = firstPoint.left.Pt.Y, X2 = firstPoint.right.Pt.X, Y2 = firstPoint.right.Pt.Y };
}
catch (Exception)
{
}
return new Position { X1 = src1.Width, Y1 = src1.Height, X2 = src1.Width * 8, Y2 = src1.Height };
}
static IEnumerable<IEnumerable<T>> GroupByProximity<T>(IEnumerable<T> source, Func<T, int> selector, int threshold)
{
var g = new List<T>();
foreach (var x in source.OrderBy(selector))
{
if ((g.Count != 0) && (selector(x) > selector(g[0]) + threshold))
{
yield return g;
g = new List<T>();
}
g.Add(x);
}
yield return g;
}
}
public struct Position
{
public float X1;
public float Y1;
public float X2;
public float Y2;
}
class AnglePoint
{
public KeyPoint left;
public KeyPoint right;
public double angle;
}
class DiseaseParameter
{
private double _DiseaseLength;
private double _Area;
public Guid TempGuid { get; set; }
public Guid Guid { get; set; }
public string Name { get; set; }
public bool IsLine { get; set; }
public Dictionary<int, int> keyValuePairs { get; set; }
public bool IsShowText { get; set; } = true;
public int TextSize { get; set; }
public PointF TextPosition { get; set; }
public double Area
{
get { return _Area; }
set { _Area = value; }
}
public double AreaOffset { get; set; }
public double DiseaseLength
{
get
{
return _DiseaseLength;
}
set
{
_DiseaseLength = value;
}
}
public double DiseaseLengthOffset { get; set; }
public double EntranceDistance { get; set; }
public string Shape { get; set; }
public double Angle { get; set; }
public string Position { get; set; }
public string LineWidth { get; set; }
public string DiseaseTag { get; set; }
public string DiseaseType { get; set; }
public string Comment { get; set; }
public string Color { get; set; }
public List<PointF> Points { get; set; } = new();
public double HeightPixelUnit { get; set; }
public int Level { get; set; }
public string NewChanged { get; set; }
public int MoldIndex { get; set; }
public string Position1 { get; set; }
public string Position2 { get; set; }
}
[JsonSourceGenerationOptions(
WriteIndented = true,
PropertyNamingPolicy = JsonKnownNamingPolicy.CamelCase,
GenerationMode = JsonSourceGenerationMode.Metadata)]
[JsonSerializable(typeof(DiseaseParameter))]
internal partial class SerializationModeOptionsContext : JsonSerializerContext
{
}
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