/// <summary>
/// Calculate the distance of two different points.
/// </summary>
/// <param name="p1"></param>
/// <param name="p2"></param>
/// <returns></returns>
public static double calPointDistance(iPoint p1, iPoint p2)
{
return Math.Sqrt(
Math.Pow(p1.Width_Position - p2.Width_Position, 2)
+
Math.Pow(p1.Height_Position - p2.Height_Position, 2)
);
}
/// <summary>
/// Do image recognition operation.
/// </summary>
public static void ImageRecognition()
{
int i = 0;
List<CharacterTemplate> lsTemplate = FileOperation.read_Template_From_Image_To_Struct();
for (i = 0; i <= 1024; i++)
{
iPoint left_top = new iPoint();
iPoint right_bottom = new iPoint();
Bitmap bitmap24 = ImageOperation.saveTo24BMP(string.Format(@"..\..\DATA\i({0}).png", i));
#if DEBUG
bitmap24.Save(string.Format(@"..\..\DATA\{0}.bmp", i));
#endif
ImageOperation.changeBackground(bitmap24);
#if DEBUG
bitmap24.Save(string.Format(@"..\..\DATA\{0}_changebackground.bmp", i));
#endif
ImageOperation.sameNearbyPixel(bitmap24);
#if DEBUG
bitmap24.Save(string.Format(@"..\..\DATA\{0}_sameNearbyPixel.bmp", i));
#endif
ImageOperation.sameNeighbourNearbyPixel(bitmap24);
#if DEBUG
bitmap24.Save(string.Format(@"..\..\DATA\{0}_sameVerticalNearbyPixel.bmp", i));
#endif
#if DEBUG_COMPONENT
List<ConnectedComponent> ccImage = ImageOperation.findAllConnectedComponents(bitmap24);
ImageOperation.mergeAllConnectedComponents(ccImage, bitmap24);
#endif
ImageOperation.findDiagonalPoints(bitmap24, left_top, right_bottom);
#if DEBUG_DIAGONAL
FileOperation.write_Image_Diagonal_Points_To_Text(i, left_top, right_bottom);
#endif
string retValue = ImageOperation.ImageRecogonitionMainBranch(left_top, right_bottom, lsTemplate, bitmap24);
#if DEBUG_TEST_RESULT
FileOperation.write_Test_Result_To_Text(retValue);
#endif
#if DEBUG
FileOperation.write_Connected_Components_To_Bmp(i, ccImage, bitmap24);
FileOperation.write_Bmp_To_RGB_Number(bitmap24, ConfigParameters.Str_Image_Text_Path + string.Format("rgb_text{0}.txt", i));
#endif
Console.WriteLine(string.Format("Image {0} has been processed.", i));
}
}
/// <summary>
/// The main branch for image recogonition.
/// </summary>
/// <param name="left_top"></param>
/// <param name="right_bottom"></param>
/// <param name="lsTemplate"></param>
/// <param name="sourceImage"></param>
/// <returns></returns>
public static string ImageRecogonitionMainBranch(iPoint left_top, iPoint right_bottom, List<CharacterTemplate> lsTemplate, Bitmap sourceImage)
{
int i = 0, j = 0, m = 0, n = 0;
int iw = 0, ih = 0, tmp = 0;
int startVertical = left_top.Width_Position;
int endVertical = right_bottom.Width_Position;
int startHorizontal = left_top.Height_Position;
int endHorizontal = right_bottom.Height_Position;
int sizeVertical = endVertical - startVertical + 1;
int sizeHorizontal = endHorizontal - startHorizontal + 1;
string retValue = "";
bool match = false;
char cName = ' ';
int maxMatch = int.MinValue;
for (i = startVertical; i <= endVertical; )
{
match = false;
maxMatch = int.MinValue;
for (j = 0; j < lsTemplate.Count; j++)
{
if (endVertical - i + 1 >= lsTemplate[j].Width && sizeHorizontal >= lsTemplate[j].Height)
{
StringBuilder sbSubRegion = new StringBuilder();
for (m = i; m <= endVertical - lsTemplate[j].Width + 1; m++)
{
for (n = startHorizontal; n <= endHorizontal - lsTemplate[j].Height + 1; n++)
{
for (iw = 0; iw < lsTemplate[j].Width; iw++)
{
for (ih = 0; ih < lsTemplate[j].Height; ih++)
{
Color color = sourceImage.GetPixel(m + iw, n + ih);
if (color.R != 255 || color.G != 255 || color.B != 255)
{
sbSubRegion.Append("1");
}
else
{
sbSubRegion.Append("0");
}
}
}
//ulong[] sourceSubImageUlongArray = BitOperation.TransferOneZeroStringToUlongArray(sbSubRegion.ToString());
if (BitOperation.is_BlockA_Contains_BlockB(lsTemplate[j].CountOne, lsTemplate[j].ZOString, sbSubRegion.ToString(), ref tmp))
{
match = true;
//tmp = calMathBlackPositions(sbSubRegion.ToString(), lsTemplate[j].ZOString);
if (tmp > maxMatch)
{
maxMatch = tmp;
cName = lsTemplate[j].Character;
}
}
}
}
}
}
if (match) { i = m; retValue += cName; }
else { i++; }
}
return retValue;
}
/// <summary>
/// Find the left-top and right-bottom points from Black-White image.
/// </summary>
/// <param name="sourceImage"></param>
/// <param name="left_top"></param>
/// <param name="right_bottom"></param>
public static void findDiagonalPoints(Bitmap sourceImage, iPoint left_top, iPoint right_bottom)
{
int i = 0;
int j = 0;
int minWidth = int.MaxValue;
int minHeight = int.MaxValue;
int maxWidth = int.MinValue;
int maxHeight = int.MinValue;
for (i = 0; i < sourceImage.Width; i++)
{
for (j = 0; j < sourceImage.Height; j++)
{
Color c = sourceImage.GetPixel(i, j);
if (c.R != 255 || c.G != 255 || c.B != 255)
{
if (i < minWidth) { minWidth = i; }
if (i > maxWidth) { maxWidth = i; }
if (j < minHeight) { minHeight = j; }
if (j > maxHeight) { maxHeight = j; }
}
}
}
left_top.Height_Position = minHeight;
left_top.Width_Position = minWidth;
right_bottom.Height_Position = maxHeight;
right_bottom.Width_Position = maxWidth;
}
/// <summary>
/// Write the image's diagonal points into a text file.
/// </summary>
/// <param name="left_top"></param>
/// <param name="right_bottom"></param>
public static void write_Image_Diagonal_Points_To_Text(int index, iPoint left_top, iPoint right_bottom)
{
try
{
StreamWriter sw = new StreamWriter(new FileStream(ConfigParameters.Str_Image_Diagonal_Text_Path, FileMode.Append));
sw.WriteLine(string.Format("Image {0}\t[Left-top: \twidth={1}, \theight={2}; \tright_bottom: \twidth={3}, \theight={4}]",
index.ToString(),
left_top.Width_Position,
left_top.Height_Position,
right_bottom.Width_Position,
right_bottom.Height_Position));
sw.Flush();
sw.Close();
}
catch (Exception e)
{
Console.WriteLine(e.Message);
}
}
public iPoint(iPoint _ipoint)
{
iniParameter(_ipoint.Width_Position, _ipoint.Height_Position);
}
/// <summary>
/// Initialize the parameters of this object.
/// </summary>
/// <param name="_w"></param>
/// <param name="_h"></param>
private void iniParameter(iPoint _lt, iPoint _rb, List<iPoint> _pointSet)
{
LEFT_TOP = new iPoint(_lt.Width_Position, _lt.Height_Position);
RIGHT_BOTTOM = new iPoint(_rb.Width_Position, _rb.Height_Position);
POINT_SET = new List<iPoint>();
foreach (iPoint point in _pointSet)
{
POINT_SET.Add(new iPoint(point.Width_Position, point.Height_Position));
}
}
public ConnectedComponent(iPoint _lt, iPoint _rb, List<iPoint> _pointSet)
{
iniParameter(_lt, _rb, _pointSet);
}