public string Apply(int tnum, Bitmap srcimg, double size_ratio, double ang_threshold, bool preprocessing, string outImagePath)
{
this.tnum = tnum;
this.width = srcimg.Width;
this.height = srcimg.Height;
int iteration = 2;
this.size_ratio = size_ratio;
this.ang_threshold = ang_threshold;
//input image: white as forground
srcimg = ImageUtils.ConvertGrayScaleToBinary(srcimg, 128);
if (preprocessing)
{
ConnectLinesWithOnePixelGap cg = new ConnectLinesWithOnePixelGap();
srcimg = cg.Apply(srcimg);
}
//Log.WriteBitmap2Debug(srcimg, "start");
srcimg = ImageUtils.InvertColors(srcimg);
minimum_distance_between_CCs_in_string = iteration;
MyConnectedComponentsAnalysisFast.MyBlobCounter char_bc = new MyConnectedComponentsAnalysisFast.MyBlobCounter();
this.char_blobs = char_bc.GetBlobs(srcimg);
this.char_labels = new short[width * height];
// Log.WriteBitmap2Debug(Printnumb(), "num");
for (int i = 0; i < width * height; i++)
{
char_labels[i] = (short)(char_bc.objectLabels[i]);
}
for (int i = 0; i < char_blobs.Count; i++)
{
char_blob_idx_max_size_table.Add(i, Math.Max(char_blobs[i].bbx.Width, char_blobs[i].bbx.Height)); // original size of the character //narges
expendable_char_blob_idx_set.Add(i);
connected_char_blob_idx_set_list.Add(new HashSet <int>());
}
original_char_labels = char_bc.objectLabels;
for (int i = 0; i < width * height; i++)
{
char_labels[i] = (short)(char_bc.objectLabels[i]);
}
// first run
// Log.WriteBitmap2Debug(Print(), "k1_");
k1();
// Log.WriteBitmap2Debug(Print(), "k1_" + 0);
iteration_counter = 1;
// while (expendable_char_blob_idx_set.Count > 1 && iteration_counter < iteration_threshold)
while (iteration_counter < iteration_threshold)
{
k1();
iteration_counter++;
// Log.WriteBitmap2Debug(Print(), "k1_" + iteration_counter);
}
Print(outImagePath);
return(outImagePath);
}
public List <TextString> Apply(Bitmap srcimg, Bitmap dilatedimg)
{
width = srcimg.Width;
height = srcimg.Height;
// max_width = width / 2; I commented these two lines
// max_height = height / 2;
//ashish
srcimg = ImageUtils.ConvertGrayScaleToBinary(srcimg, threshold: 128);
srcimg = ImageUtils.InvertColors(srcimg);
dilatedimg = ImageUtils.ConvertGrayScaleToBinary(dilatedimg, threshold: 128);
dilatedimg = ImageUtils.InvertColors(dilatedimg);
MyConnectedComponentsAnalysisFast.MyBlobCounter char_bc = new MyConnectedComponentsAnalysisFast.MyBlobCounter();
List <MyConnectedComponentsAnalysisFast.MyBlob> char_blobs = char_bc.GetBlobs(srcimg);
ushort[] char_labels = char_bc.objectLabels;
MyConnectedComponentsAnalysisFast.MyBlobCounter string_bc = new MyConnectedComponentsAnalysisFast.MyBlobCounter();
List <MyConnectedComponentsAnalysisFast.MyBlob> string_blobs = string_bc.GetBlobs(dilatedimg);
ushort[] string_labels = string_bc.objectLabels;
List <TextString> initial_string_list = new List <TextString>();
int string_count = string_blobs.Count;
for (int i = 0; i < string_count; i++)
{
initial_string_list.Add(new TextString());
initial_string_list.Last().mass_center = string_blobs[i].mass_center;
}
for (int i = 0; i < char_blobs.Count; i++)
{
if (char_blobs[i].bbx.Width > 1 && char_blobs[i].bbx.Height > 1)
{
char_blobs[i].string_id = string_labels[char_blobs[i].sample_y * width + char_blobs[i].sample_x] - 1;
initial_string_list[char_blobs[i].string_id].AddChar(char_blobs[i]);
}
}
for (int i = 0; i < initial_string_list.Count; i++)
{
if ((initial_string_list[i].char_list.Count == 0) ||
(initial_string_list[i].bbx.Width < min_width || initial_string_list[i].bbx.Height < min_height) ||
(initial_string_list[i].bbx.Width > max_width || initial_string_list[i].bbx.Height > max_height))
{
initial_string_list.RemoveAt(i);
i--;
}
}
for (int i = 0; i < initial_string_list.Count; i++)
{
PrintSubStringsSmall(char_labels, initial_string_list[i], 0);
}
return(initial_string_list);
}
public void NeighborhoodTextDetection(Bitmap Neighborhood)
{
MyConnectedComponentsAnalysisFast.MyBlobCounter ConnectedComponent = new MyConnectedComponentsAnalysisFast.MyBlobCounter();
ConnectedComponent.GetBlobs(Neighborhood);
}
public void IdentifyExpendableCharBlobs()
{
short_char_blob_idx_set.Clear();
Bitmap resultimg = Print();
resultimg = ImageUtils.InvertColors(resultimg);
MyConnectedComponentsAnalysisFast.MyBlobCounter string_bc = new MyConnectedComponentsAnalysisFast.MyBlobCounter();
List <MyConnectedComponentsAnalysisFast.MyBlob> string_blobs = string_bc.GetBlobs(resultimg);
ushort[] string_labels = string_bc.objectLabels;
int string_count = string_blobs.Count;
List <List <MyConnectedComponentsAnalysisFast.MyBlob> > string_list = new List <List <MyConnectedComponentsAnalysisFast.MyBlob> >();
for (int i = 0; i < string_count; i++)
{
string_list.Add(new List <MyConnectedComponentsAnalysisFast.MyBlob>());
}
for (int i = 0; i < char_blobs.Count; i++)
{
char_blobs[i].string_id =
string_labels[char_blobs[i].sample_y * width + char_blobs[i].sample_x] - 1;
string_list[char_blobs[i].string_id].Add(char_blobs[i]);
}
for (int i = 0; i < string_list.Count; i++)
{
if (string_list[i].Count > 0)
{
int avg_size = 0;
for (int j = 0; j < string_list[i].Count; j++)
{
avg_size += Math.Max(string_list[i][j].bbx.Width, string_list[i][j].bbx.Height);
}
avg_size /= string_list[i].Count;
for (int j = 0; j < string_list[i].Count; j++)
{
char_blob_idx_max_size_table[string_list[i][j].pixel_id - 1] = avg_size;
}
}
}
// recomputing expendable char blob idx
for (int i = 0; i < char_blobs.Count; i++)
{
if (connected_char_blob_idx_set_list[i].Count == 2)
{
expendable_char_blob_idx_set.Remove(i);
}
else // 0 or 1 connecting CC
{
int max_dist = (int)((double)((int)char_blob_idx_max_size_table[i]) / 3);
// int max_dist = (int)((double)((int)char_blob_idx_max_size_table[i])/2 );
if (max_dist < minimum_distance_between_CCs_in_string * 2)
{
max_dist = minimum_distance_between_CCs_in_string * 2;
}
if (iteration_counter > max_dist)
{
expendable_char_blob_idx_set.Remove(i);
}
}
}
}