|
public static ArrayBool2DToBitmap ( bool input ) : |
||
| input | bool | |
| return | ||
public Bitmap Apply(Bitmap srcimg)
{
bool[,] image = ImageUtils.BitmapToBoolArray2D(srcimg, 0);
bool[,] tmp = new bool[srcimg.Height, srcimg.Width];
for (int i = 1; i < srcimg.Width - 1; i++)
{
for (int j = 1; j < srcimg.Height - 1; j++)
{
if (image[j, i] == false) //background pixel
{
tmp[j, i] = image[j, i];
bool[] marks = new bool[8];
int nei_count = 0;
// 0 1 2
// 3 x 4
// 5 6 7
int count = 0;
for (int r = -1; r < 2; r++) //scan neighbors
{
for (int c = -1; c < 2; c++)
{
if (r == 0 && c == 0)
{
continue;
}
if (image[j + r, i + c])
{
count++;
}
marks[nei_count] = image[j + r, i + c];
nei_count++;
}
}
//convert one pixel gaps between lines
{
if ((marks[0] && marks[7]) || (marks[1] && marks[6]) ||
(marks[2] && marks[5]) || (marks[3] && marks[4]))
{
tmp[j, i] = true;
}
}
}
else
{
tmp[j, i] = image[j, i];
}
}
}
for (int i = 1; i < srcimg.Width - 1; i++)
{
for (int j = 1; j < srcimg.Height - 1; j++)
{
image[j, i] = tmp[j, i];
}
}
return(ImageUtils.ArrayBool2DToBitmap(image));
}
public Bitmap Apply(Bitmap srcimg)
{
srcimg = ImageUtils.ConvertGrayScaleToBinary(srcimg, 254);
srcimg = ImageUtils.InvertColors(srcimg);
MyConnectedComponentsAnalysisFast.MyBlobCounter char_bc = new MyConnectedComponentsAnalysisFast.MyBlobCounter();
List <MyConnectedComponentsAnalysisFast.MyBlob> char_blobs = char_bc.GetBlobs(srcimg);
ushort[] char_labels = char_bc.objectLabels;
HashSet <int> boarder_char_idx_set = new HashSet <int>();
for (int i = 0; i < char_blobs.Count; i++)
{
if (char_blobs[i].bbx.X == 0 ||
char_blobs[i].bbx.Right == srcimg.Width ||
char_blobs[i].bbx.Top == 0 ||
char_blobs[i].bbx.Bottom == srcimg.Height)
{
boarder_char_idx_set.Add(i);
}
}
for (int i = 0; i < srcimg.Width * srcimg.Height; i++)
{
if (char_labels[i] != 0)
{
int idx = char_labels[i] - 1;
if (boarder_char_idx_set.Contains(idx))
{
char_labels[i] = 0;
}
}
}
bool[,] img = new bool[srcimg.Height, srcimg.Width];
for (int i = 0; i < srcimg.Width; i++)
{
for (int j = 0; j < srcimg.Height; j++)
{
if (char_labels[j * srcimg.Width + i] == 0)
{
img[j, i] = false;
}
else
{
img[j, i] = true;
}
}
}
return(ImageUtils.ArrayBool2DToBitmap(img));
}
public Bitmap Apply(Bitmap srcimg, int char_size)
{
double min_pixel_area_size = 0.18;
srcimg = ImageUtils.ConvertGrayScaleToBinary(srcimg, 254);
srcimg = ImageUtils.InvertColors(srcimg);
MyConnectedComponentsAnalysisFast.MyBlobCounter char_bc = new MyConnectedComponentsAnalysisFast.MyBlobCounter();
List <MyConnectedComponentsAnalysisFast.MyBlob> char_blobs = char_bc.GetBlobs(srcimg);
ushort[] char_labels = char_bc.objectLabels;
HashSet <int> noise_char_idx_set = new HashSet <int>();
for (int i = 0; i < char_blobs.Count; i++)
{
if (((double)char_blobs[i].pixel_count / (double)char_blobs[i].area) < min_pixel_area_size) //line
{
noise_char_idx_set.Add(i);
}
if (char_blobs[i].bbx.Width < char_size &&
char_blobs[i].bbx.Height < char_size) // small cc
{
noise_char_idx_set.Add(i);
}
if (char_blobs[i].bbx.Width <char_size && char_blobs[i].bbx.Height> char_size * 3)
{
noise_char_idx_set.Add(i);
}
if (char_blobs[i].bbx.Height <char_size && char_blobs[i].bbx.Width> char_size * 3)
{
noise_char_idx_set.Add(i);
}
}
for (int i = 0; i < srcimg.Width * srcimg.Height; i++)
{
if (char_labels[i] != 0)
{
int idx = char_labels[i] - 1;
if (noise_char_idx_set.Contains(idx))
{
char_labels[i] = 0;
}
}
}
bool[,] img = new bool[srcimg.Height, srcimg.Width];
for (int i = 0; i < srcimg.Width; i++)
{
for (int j = 0; j < srcimg.Height; j++)
{
if (char_labels[j * srcimg.Width + i] == 0)
{
img[j, i] = false;
}
else
{
img[j, i] = true;
}
}
}
return(ImageUtils.ArrayBool2DToBitmap(img));
}
