private void FindNearestNeighbourForAllPoints(ref ImageParametrs firstImageParametrs, ref ImageParametrs secondImageParametrs)
{
foreach (var pointIndex in firstImageParametrs.allPointAttributes.Keys)
{
FindNearestNeighbour(pointIndex, ref firstImageParametrs, secondImageParametrs);
}
}
private void buttonFindKNN_Click(object sender, EventArgs e)
{
ImageParametrs firstImageParametrs = FileReader.ReadParametrs(1);
ImageParametrs secondImageParametrs = FileReader.ReadParametrs(2);
ImageWorker imageWorker = new ImageWorker();
List <int> indexes = imageWorker.FindKNN(ref firstImageParametrs, ref secondImageParametrs);
imageWorker.DrawLines(indexes, firstImageParametrs, secondImageParametrs);
}
public void DrawLines(List <int> pairIndexes, ImageParametrs firstImageParametrs, ImageParametrs secondImageParametrs)
{
Bitmap bitmap = (Bitmap)Image.FromFile(Parametrs.PATH_TO_WORKING_FILES + Parametrs.MERGED_IMAGE_NAME);
int secondImageIndex = (int)firstImageParametrs.allPointAttributes[pairIndexes[0]].OtherImageIndex;
DrawLine(bitmap,
firstImageParametrs.allPointAttributes[pairIndexes[0]].PointX,
firstImageParametrs.allPointAttributes[pairIndexes[0]].PointY,
secondImageParametrs.allPointAttributes[pairIndexes[secondImageIndex]].PointX,
secondImageParametrs.allPointAttributes[pairIndexes[secondImageIndex]].PointY
);
}
private void FindNearestNeighbour(int firstPointIndex, ref ImageParametrs firstImageParametrs, ImageParametrs secondImageParametrs)
{
int smallestDistanceID = 0;
double smallestDistance = double.MaxValue;
foreach (var secondPointIndex in secondImageParametrs.allPointAttributes.Keys)
{
double foundDistance = FindEuclideanDistance(firstImageParametrs.allPointAttributes[firstPointIndex].attributes, secondImageParametrs.allPointAttributes[secondPointIndex].attributes);
if (smallestDistance > foundDistance)
{
smallestDistance = foundDistance;
smallestDistanceID = secondPointIndex;
firstImageParametrs.allPointAttributes[firstPointIndex].SetOtherInageIndex(secondPointIndex);
}
}
}
private List <int> FindPointPairs(ImageParametrs firstImageParametrs, ImageParametrs secondImageParametrs)
{
List <int> pairIndexes = new List <int>();
foreach (var pointIndex in firstImageParametrs.allPointAttributes.Keys)
{
//firstIndex must point to secondIndex (firstIndex == secondIndex)
int?firstIndex = firstImageParametrs.allPointAttributes[pointIndex].OtherImageIndex;
if (firstIndex != null)
{
int?secondIndex = secondImageParametrs.allPointAttributes[(int)firstIndex].OtherImageIndex;
//secondIndex must point to firstIndex (secondIndex == firstIndex)
if ((int)secondIndex == (int)firstIndex)
{
//Tuple<int, int> pairPointIndexes = new Tuple<int, int>((int) firstIndex, (int) secondIndex);
pairIndexes.Add((int)firstIndex);
}
}
}
return(pairIndexes);
}
public static ImageParametrs ReadParametrs(int pictureIndex)
{
ImageParametrs parametrs = new ImageParametrs();
string pathToImage = Parametrs.PATH_TO_WORKING_FILES;
// first(1) or second(2) image index
if (pictureIndex == 1)
{
pathToImage += Parametrs.FIRST_IMAGE_NAME;
}
else
{
pathToImage += Parametrs.SECOND_IMAGE_NAME;
}
if (File.Exists(pathToImage))
{
using (StreamReader reader = File.OpenText(pathToImage))
{
int pointCounter = 0;
//skip first two integers
reader.ReadLine();
reader.ReadLine();
string readLine = reader.ReadLine();
while (readLine != null)
{
string[] splitedParametrs = readLine.Split(new char[] { ' ', '\t', '\r', '\n', ';' }, StringSplitOptions.RemoveEmptyEntries);
ConvertParametrsFromString(splitedParametrs, pointCounter++, ref parametrs);
readLine = reader.ReadLine();
}
}
}
return(parametrs);
}
private static void ConvertParametrsFromString(string[] splitedParametrs, int pointIndex, ref ImageParametrs parametrs)
{
List <int> tmpParametrs = new List <int>();
for (int i = 5; i < Parametrs.NUMBER_OF_PARAMETRS + 5; i++)
{
tmpParametrs.Add(Int32.Parse(splitedParametrs[i]));
}
parametrs.AddPointParametr(pointIndex, tmpParametrs, splitedParametrs[0], splitedParametrs[1]);
}
public List <int> FindKNN(ref ImageParametrs firstImageParametrs, ref ImageParametrs secondImageParametrs)
{
FindNearestNeighbourForAllPoints(ref firstImageParametrs, ref secondImageParametrs);
FindNearestNeighbourForAllPoints(ref secondImageParametrs, ref firstImageParametrs);
return(FindPointPairs(secondImageParametrs, firstImageParametrs));
}
