/// <summary>
        /// Вычисление минимальной площади прямоугольника, обрамляющего два области
        /// </summary>
        /// <param name="firstRegion">Первая область</param>
        /// <param name="secondRegion">Вторая область</param>
        /// <returns></returns>
        private int CalculateAllTextBoxSquare(TextRegion firstRegion, TextRegion secondRegion)
        {
            try
            {
                int minAllBBI = Math.Min(firstRegion.MinBorderIndexI, secondRegion.MinBorderIndexI);
                int minAllBBJ = Math.Min(firstRegion.MinBorderIndexJ, secondRegion.MinBorderIndexJ);
                int maxAllBBI = Math.Max(firstRegion.MaxBorderIndexI, secondRegion.MaxBorderIndexI);
                int maxAllBBJ = Math.Max(firstRegion.MaxBorderIndexJ, secondRegion.MaxBorderIndexJ);

                return (maxAllBBI - minAllBBI + 1) * (maxAllBBJ - minAllBBJ + 1);
            }
            catch (Exception excption)
            {
                throw excption;
            }
        }
 /// <summary>
 /// Принадлежит ли точка с заданными координатами области
 /// </summary>
 /// <param name="textRegion">Область</param>
 /// <param name="pointIndexI">Координата по строке</param>
 /// <param name="pointIndexJ">Координата по столбцу</param>
 /// <returns>1 - принадлежит, 0 - иначе</returns>
 private bool IsBelongToRegion(TextRegion textRegion, int pointIndexI, int pointIndexJ)
 {
     try
     {
         bool result = false;
         if (pointIndexI >= textRegion.MinBorderIndexI && pointIndexJ >= textRegion.MinBorderIndexJ &&
             pointIndexJ <= textRegion.MaxBorderIndexJ && pointIndexI <= textRegion.MaxBorderIndexI)
             result = true;
         return result;
     }
     catch (Exception exception)
     {
         throw exception;
     }
 }
        /// <summary>
        /// Вычисление площади пересечения двух текстовых областей
        /// </summary>
        /// <param name="firstRegion">Первая область</param>
        /// <param name="secondRegion">Вторая область</param>
        /// <returns></returns>
        private int CalculateIntersectionSquare(TextRegion firstRegion, TextRegion secondRegion)
        {
            try
            {
                int minAllBBI = Math.Min(firstRegion.MinBorderIndexI, secondRegion.MinBorderIndexI);
                int minAllBBJ = Math.Min(firstRegion.MinBorderIndexJ, secondRegion.MinBorderIndexJ);
                int maxAllBBI = Math.Max(firstRegion.MaxBorderIndexI, secondRegion.MaxBorderIndexI);
                int maxAllBBJ = Math.Max(firstRegion.MaxBorderIndexJ, secondRegion.MaxBorderIndexJ);

                int square = 0;
                for (int i = minAllBBI; i <= maxAllBBI; i++)
                    for (int j = minAllBBJ; j <= maxAllBBJ; j++)
                        if (IsBelongToRegion(firstRegion, i, j) && IsBelongToRegion(secondRegion, i, j))
                            ++square;
                return square;
            }
            catch (Exception exception)
            {
                throw exception;
            }
        }
 /// <summary>
 /// Вычисление вероятности совпадения двух текстовых областей
 /// </summary>
 /// <param name="firstRegion">Первая текстовая область</param>
 /// <param name="secondRegion">Вторая текстовая область</param>
 /// <returns></returns>
 private double CalculateMatch(TextRegion firstRegion, TextRegion secondRegion)
 {
     try
     {
         int allBBSquare = CalculateAllTextBoxSquare(firstRegion, secondRegion);
         int intersectionSquare = CalculateIntersectionSquare(firstRegion, secondRegion);
         return (double) intersectionSquare / (double) allBBSquare;
     }
     catch (Exception exception)
     {
         throw exception;
     }
 }
Exemplo n.º 5
0
 /// <summary>
 /// Считывание текстовых областей для одного кадра
 /// </summary>
 /// <param name="xmlReader">xml - reader</param>
 /// <param name="textRegions">Текстовые области</param>
 /// <param name="frameNumber">Номер кадра</param>
 private static void ReadFrameTextBlocksInformation(System.Xml.XmlReader xmlReader, out List<TextRegion> textRegions,
     out int frameNumber)
 {
     try
     {
         textRegions = new List<TextRegion>();
         xmlReader.MoveToFirstAttribute();
         frameNumber = Convert.ToInt32(xmlReader.Value);
         xmlReader.MoveToNextAttribute();
         int textRegionsNumber = Convert.ToInt32(xmlReader.Value);
         if (textRegionsNumber != 0)
         {
             bool readingFrame = true;
             while (xmlReader.Read() && readingFrame)
             {
                 if (xmlReader.Name == "Frame")
                     readingFrame = false;
                 else if (xmlReader.Name == "TextRegion")
                 {
                     TextRegion textRegion = new TextRegion();
                     while (xmlReader.MoveToNextAttribute())
                     {
                         switch (xmlReader.Name)
                         {
                             case "LeftUpPointIndexI":
                                 textRegion.MinBorderIndexI = Convert.ToInt32(xmlReader.Value);
                                 break;
                             case "LeftUpPointIndexJ":
                                 textRegion.MinBorderIndexJ = Convert.ToInt32(xmlReader.Value);
                                 break;
                             case "RightDownPointIndexI":
                                 textRegion.MaxBorderIndexI = Convert.ToInt32(xmlReader.Value);
                                 break;
                             case "RightDownPointIndexJ":
                                 textRegion.MaxBorderIndexJ = Convert.ToInt32(xmlReader.Value);
                                 break;
                             default:
                                 break;
                         }
                     }
                     textRegions.Add(textRegion);
                 }
             }
         }
     }
     catch (Exception exception)
     {
         throw exception;
     }
 }