private void ProcessSegmentationMethod(object sender, RoutedEventArgs e)
{
string strSermenterName = (sender as Control).Tag.ToString();
ISegmentLine segmenter = ComponentCreator.MakeComponent <ISegmentLine>(strSermenterName);
if (segmenter == null || currBookLine == null)
{
return;
}
// приведем к чернобелому
Bytearray image = currBookLine.ImageBytearray;
//IBinarize binarizer = new BinarizeByOtsu();
//binarizer.Binarize(image, image);
OcrRoutine.binarize_simple(image, image);
// сегментация
Intarray charseg = new Intarray();
segmenter.Charseg(ref charseg, image);
// фон равен 0
SegmRoutine.make_line_segmentation_black(charseg);
// удалим маленькие сегменты
SegmRoutine.remove_small_components(charseg, 3, 3);
ImgLabels.renumber_labels(charseg, 1);
currBookLine.CharsegIntarray = charseg;
CurrSegmentsCount = NarrayUtil.Max(charseg);
// Show segmented image
ShowCharsegImage(charseg,
(currBookLine.HaveTranscript && CurrSegmentsCount == currBookLine.Transcript.Length) ?
currBookLine.Transcript : "");
// to enable save button
EnableCharsegCmdButtons();
}
public void SetLine(Bytearray image)
{
CHECK_ARG(image.Dim(1) < PGeti("maxheight"), "image.Dim(1) < PGeti(\"maxheight\")");
// run the segmenter
/*Narray<Rect> bboxes = new Narray<Rect>();
* Intarray iar = new Intarray();
* iar.Copy(image);
* ImgLabels.bounding_boxes(ref bboxes, iar);*/
//Console.WriteLine("IMG SETLINE: imin:{0} imax:{1}", NarrayUtil.ArgMin(iar), NarrayUtil.ArgMax(iar));
//Console.WriteLine("INDEX_BLACK:{0} {1} {2} {3}", bboxes[0].x0, bboxes[0].y0, bboxes[0].x1, bboxes[0].y1);
//ImgIo.write_image_gray("image.png", image);
OcrRoutine.binarize_simple(binarized, image);
segmenter.Object.Charseg(ref segmentation, binarized);
/*Intarray segm = new Intarray();
* segm.Copy(segmentation);
* ImgLabels.simple_recolor(segm);
* ImgIo.write_image_packed("segm_image.png", segm);*/
//NarrayUtil.Sub(255, binarized);
SegmRoutine.make_line_segmentation_black(segmentation);
SegmRoutine.remove_small_components(segmentation, 3, 3); // i add this line
ImgLabels.renumber_labels(segmentation, 1);
// set up the grouper
grouper.Object.SetSegmentation(segmentation);
}
public override void Charseg(ref Intarray outimage, Bytearray inarray)
{
Bytearray image = new Bytearray();
image.Copy(inarray);
OcrRoutine.binarize_simple(image);
OcrRoutine.Invert(image);
outimage.Copy(image);
Intarray labels = new Intarray();
labels.Copy(image);
ImgLabels.label_components(ref labels);
Narray <Rect> boxes = new Narray <Rect>();
ImgLabels.bounding_boxes(ref boxes, labels);
Intarray equiv = new Intarray(boxes.Length());
for (int i = 0; i < boxes.Length(); i++)
{
equiv[i] = i;
}
for (int i = 1; i < boxes.Length(); i++)
{
Rect p = boxes[i];
for (int j = 1; j < boxes.Length(); j++)
{
if (i == j)
{
continue;
}
Rect q = boxes[j];
int x0 = Math.Max(p.x0, q.x0);
int x1 = Math.Min(p.x1, q.x1);
int iw = x1 - x0;
if (iw <= 0)
{
continue; // no overlap
}
int ow = Math.Min(p.Width(), q.Width());
float frac = iw / (float)(ow);
if (frac < 0.5f)
{
continue; // insufficient overlap
}
// printf("%d %d : %d %d : %g\n",i,j,iw,ow,frac);
equiv.Put1d(Math.Max(i, j), Math.Min(i, j));
}
}
for (int i = 0; i < labels.Length(); i++)
{
labels.Put1d(i, equiv.At1d(labels.At1d(i)));
}
ImgLabels.renumber_labels(labels, 1);
outimage.Move(labels);
SegmRoutine.make_line_segmentation_white(outimage);
SegmRoutine.check_line_segmentation(outimage);
}
public static void combine_segmentations(ref Intarray dst, Intarray src)
{
dst.SameDims(src);
int n = NarrayUtil.Max(dst) + 1;
for (int i = 0; i < dst.Length1d(); i++)
{
dst.Put1d(i, (dst.At1d(i) + src.At1d(i) * n));
}
ImgLabels.renumber_labels(dst, 1);
}
public static void fix_diacritics(Intarray segmentation)
{
Narray <Rect> bboxes = new Narray <Rect>();
ImgLabels.bounding_boxes(ref bboxes, segmentation);
if (bboxes.Length() < 1)
{
return;
}
Intarray assignments = new Intarray(bboxes.Length());
for (int i = 0; i < assignments.Length(); i++)
{
assignments[i] = i;
}
for (int j = 0; j < bboxes.Length(); j++)
{
float dist = 1e38f;
int closest = -1;
for (int i = 0; i < bboxes.Length(); i++)
{
// j should overlap i in the x direction
if (bboxes.At1d(j).x1 < bboxes.At1d(i).x0)
{
continue;
}
if (bboxes.At1d(j).x0 > bboxes.At1d(i).x1)
{
continue;
}
// j should be above i
if (!(bboxes.At1d(j).y0 >= bboxes.At1d(i).y1))
{
continue;
}
#if false
// j should be smaller than i
if (!(bboxes.At1d(j).area() < bboxes.At1d(i).area()))
{
continue;
}
#endif
float d = Math.Abs((bboxes[j].x0 + bboxes[j].x1) / 2 - (bboxes[i].x0 + bboxes[i].x1) / 2);
if (d >= dist)
{
continue;
}
dist = d;
closest = i;
}
if (closest < 0)
{
continue;
}
assignments[j] = closest;
}
for (int i = 0; i < segmentation.Length(); i++)
{
segmentation.Put1d(i, assignments[segmentation.At1d(i)]);
}
ImgLabels.renumber_labels(segmentation, 1);
}