/// <summary>
/// Clustering the normal mega blocks of frames using K-means algorithm
/// and save the codewords (Centers) of the clusters in the disk.
/// </summary>
/// <param name="Source_video_path">Path of the video on the disk.</param>
/// <param name="Codeword_path">Path of the clusters centers on the disk.</param>
/// <returns></returns>
public void cluster_video(String Source_video_path, String Codeword_path)
{
MotionInfluenceMap MIG = new MotionInfluenceMap();
List <double[][][]> MotionInfOfFrames = MIG.get_motion_influence_map(Source_video_path, out xBlockSize, out yBlockSize, out noOfRowInBlock, out noOfColInBlock, out total_frames, true);
MegaBlocks MB = new MegaBlocks();
double[][][][] MegaBlock = MB.createMegaBlocks(MotionInfOfFrames, xBlockSize, yBlockSize, noOfRowInBlock, noOfColInBlock, (int)total_frames);
double[][][][] codewords = MB.kmeans(MegaBlock, xBlockSize, yBlockSize, (int)total_frames);
int n = 2;
int row = xBlockSize / n + 1;
int col = yBlockSize / n + 1;
using (StreamWriter st = new StreamWriter(Codeword_path))
for (int i = 0; i < row; i++)
{
for (int j = 0; j < col; j++)
{
for (int q = 0; q < 5; q++)
{
for (int w = 0; w < 8; w++)
{
if (w != 7)
{
st.Write(codewords[i][j][q][w] + " ");
}
else
{
st.Write(codewords[i][j][q][w]);
}
}
st.WriteLine();
}
}
}
}
/// <summary>
/// Takes tha data and create motion influance map and mega blocks and process them
/// so we can create min distination matrix and create array of centers of normal frames.
/// </summary>
/// <param name="video_path">Path of the video we want to process.</param>
/// <param name="Codeword_path">Path of the centers of normal events in the train videos.</param>
/// <param name="frame_number">the number of frame we want to start the processing from.</param>
/// <returns></returns>
public AbnormalDetection(String video_path, String Codeword_path, int frame_number)
{
fram_num = frame_number;
MIG = new MotionInfluenceMap();
MotionInfOfFrames = MIG.get_motion_influence_map(video_path, out xBlockSize, out yBlockSize, out noOfRowInBlock, out noOfColInBlock, out total_frames, false, fram_num);
MB = new MegaBlocks();
MegaBlock = MB.createMegaBlocks(MotionInfOfFrames, xBlockSize, yBlockSize, noOfRowInBlock, noOfColInBlock, (int)total_frames);
n = 2;
row = xBlockSize / n + 1;
col = yBlockSize / n + 1;
cluster_n = 5;
int i = 0, j = 0, k = 0;
codewords = new double[row][][][];
for (int r = 0; r < row; r++)
{
codewords[r] = new double[col][][];
for (int rr = 0; rr < col; rr++)
{
codewords[r][rr] = new double[cluster_n][];
for (int rrr = 0; rrr < cluster_n; rrr++)
{
codewords[r][rr][rrr] = new double[8];
}
}
}
minDistMatrix = new double[(int)total_frames][][];
for (int r = 0; r < total_frames; r++)
{
minDistMatrix[r] = new double[row][];
for (int rr = 0; rr < row; rr++)
{
minDistMatrix[r][rr] = new double[col];
}
}
using (StreamReader reader = new StreamReader(Codeword_path))
{
string line;
while ((line = reader.ReadLine()) != null)
{
double[] arr = Array.ConvertAll(line.Split(' '), Double.Parse);
codewords[i][j][k] = arr;
k++;
if (k == cluster_n)
{
k = 0;
j++;
if (j == col)
{
j = 0;
if (i < row - 1)
{
i++;
}
}
}
}
}
}