public void SetImage(Bytearray image_)
{
Bytearray image = new Bytearray();
//image = image_;
image.Copy(image_);
dimage.Copy(image);
if (PGeti("fill_holes") > 0)
{
Bytearray holes = new Bytearray();
SegmRoutine.extract_holes(ref holes, image);
for (int i = 0; i < image.Length(); i++)
{
if (holes.At1d(i) > 0)
{
image.Put1d(i, 255);
}
}
}
int w = image.Dim(0), h = image.Dim(1);
wimage.Resize(w, h);
wimage.Fill(0);
float s1 = 0.0f, sy = 0.0f;
for (int i = 1; i < w; i++)
{
for (int j = 0; j < h; j++)
{
if (image[i, j] > 0)
{
s1++; sy += j;
}
if (image[i, j] > 0)
{
wimage[i, j] = inside_weight;
}
else
{
wimage[i, j] = outside_weight;
}
}
}
if (s1 == 0)
{
where = image.Dim(1) / 2;
}
else
{
where = (int)(sy / s1);
}
for (int i = 0; i < dimage.Dim(0); i++)
{
dimage[i, where] = 0x008000;
}
}
public static void erase_small_components(Floatarray input, float mins = 0.2f, float thresh = 0.25f)
{
// compute a thresholded image for component labeling
float threshold = thresh * NarrayUtil.Max(input);
Intarray components = new Intarray();
components.MakeLike(input);
components.Fill(0);
for (int i = 0; i < components.Length(); i++)
{
components[i] = (input[i] > threshold ? 1 : 0);
}
// compute the number of pixels in each component
int n = ImgLabels.label_components(ref components);
Intarray totals = new Intarray(n + 1);
totals.Fill(0);
for (int i = 0; i < components.Length(); i++)
{
totals[components[i]] = totals[components[i]] + 1;
}
totals[0] = 0;
int biggest = NarrayUtil.ArgMax(totals);
// erase small components
float minsize = mins * totals[biggest];
Bytearray keep = new Bytearray(n + 1);
float background = NarrayUtil.Min(input);
for (int i = 0; i < keep.Length(); i++)
{
keep[i] = (byte)(totals[i] > minsize ? 1 : 0);
}
for (int i = 0; i < input.Length(); i++)
{
if (keep[components[i]] == 0)
{
input[i] = background;
}
}
}
public static void remove_small_components <T>(Narray <T> bimage, int mw, int mh)
{
Intarray image = new Intarray();
image.Copy(bimage);
ImgLabels.label_components(ref image);
Narray <Rect> rects = new Narray <Rect>();
ImgLabels.bounding_boxes(ref rects, image);
Bytearray good = new Bytearray(rects.Length());
for (int i = 0; i < good.Length(); i++)
{
good[i] = 1;
}
for (int i = 0; i < rects.Length(); i++)
{
if (rects[i].Width() < mw && rects[i].Height() < mh)
{
// printf("*** %d %d %d\n",i,rects[i].width(),rects[i].height());
good[i] = 0;
}
}
for (int i = 0; i < image.Length1d(); i++)
{
if (good[image.At1d(i)] == 0)
{
image.Put1d(i, 0);
}
}
for (int i = 0; i < image.Length1d(); i++)
{
if (image.At1d(i) == 0)
{
bimage.Put1d(i, default(T)); // default(T) - 0
}
}
}
/// <summary>
/// Create char segmentation (cseg) files if missing
/// </summary>
/// <param name="bookPath">path to bookstore</param>
/// <param name="modelFilename">Linerec model file</param>
/// <param name="langModel">language model file</param>
/// <param name="suffix">e.g., 'gt'</param>
public void ComputeMissingCsegForBookStore(string bookPath, string model = "default.model",
string suffix = "", bool saveRseg = false, string langModel = "default.fst")
{
// create line recognizer
Linerec linerec = Linerec.LoadLinerec(model);
// create IBookStore
IBookStore bookstore = new SmartBookStore();
bookstore.SetPrefix(bookPath);
bookstore.Info();
// language model
OcroFST lmodel = OcroFST.MakeOcroFst();
lmodel.Load(langModel);
// iterate lines of pages
for (int page = 0; page < bookstore.NumberOfPages(); page++)
{
int nlines = bookstore.LinesOnPage(page);
Console.WriteLine("Page {0} has {1} lines", page, nlines);
for (int j = 0; j < nlines; j++)
{
int line = bookstore.GetLineId(page, j);
Bytearray image = new Bytearray();
bookstore.GetLine(image, page, line);
Intarray cseg = new Intarray();
bookstore.GetCharSegmentation(cseg, page, line, suffix);
// check missing cseg file
if (cseg.Length() <= 0 && image.Length() > 0)
{
// recognize line
OcroFST fst = OcroFST.MakeOcroFst();
Intarray rseg = new Intarray();
linerec.RecognizeLine(rseg, fst, image);
// find best results
string resText;
Intarray inp = new Intarray();
Floatarray costs = new Floatarray();
double totalCost = BeamSearch.beam_search(out resText, inp, costs, fst, lmodel, 100);
Console.WriteLine(bookstore.PathFile(page, line, suffix));
Console.Write(" beam_search score: {0}", totalCost);
/*string resText2;
* fst.BestPath(out resText2);*/
// write cseg to bookstore
string trans;
bookstore.GetLine(out trans, page, line, suffix);
resText = resText.Replace(" ", "");
if (String.IsNullOrEmpty(trans))
{
bookstore.PutLine(resText, page, line, suffix);
Console.Write("; transcript saved");
}
else if (trans == resText)
{
// convert inputs and rseg to cseg
SegmRoutine.rseg_to_cseg(cseg, rseg, inp);
bookstore.PutCharSegmentation(cseg, page, line, suffix);
Console.Write("; cseg saved");
}
else if (saveRseg)
{
// convert inputs and rseg to cseg
SegmRoutine.rseg_to_cseg(cseg, rseg, inp);
//SegmRoutine.remove_small_components(cseg, 4);
/*bookstore.PutCharSegmentation(cseg, page, line, suffix);
* Console.Write("; cseg saved");*/
SegmRoutine.make_line_segmentation_white(cseg);
ImgLabels.simple_recolor(cseg);
string v = "rseg";
if (!String.IsNullOrEmpty(suffix))
{
v += "."; v += suffix;
}
string rsegpath = bookstore.PathFile(page, line, v, "png");
ImgIo.write_image_packed(rsegpath, cseg);
Console.Write("; rseg saved");
}
Console.WriteLine();
}
}
}
}
public void SetImage(Bytearray image_)
{
Bytearray image = new Bytearray();
//image = image_;
image.Copy(image_);
dimage.Copy(image);
if (PGeti("fill_holes") > 0)
{
Bytearray holes = new Bytearray();
SegmRoutine.extract_holes(ref holes, image);
for (int i = 0; i < image.Length(); i++)
if (holes.At1d(i) > 0) image.Put1d(i, 255);
}
int w = image.Dim(0), h = image.Dim(1);
wimage.Resize(w, h);
wimage.Fill(0);
float s1 = 0.0f, sy = 0.0f;
for (int i = 1; i < w; i++)
for (int j = 0; j < h; j++)
{
if (image[i, j] > 0) { s1++; sy += j; }
if (image[i, j] > 0) wimage[i, j] = inside_weight;
else wimage[i, j] = outside_weight;
}
if(s1==0) where = image.Dim(1)/2;
else where = (int)(sy / s1);
for (int i = 0; i < dimage.Dim(0); i++) dimage[i, where] = 0x008000;
}
/// <summary>
/// Create char segmentation (cseg) files if missing
/// </summary>
/// <param name="bookPath">path to bookstore</param>
/// <param name="modelFilename">Linerec model file</param>
/// <param name="langModel">language model file</param>
/// <param name="suffix">e.g., 'gt'</param>
public void ComputeMissingCsegForBookStore(string bookPath, string model = "default.model",
string suffix = "", bool saveRseg = false, string langModel = "default.fst")
{
// create line recognizer
Linerec linerec = Linerec.LoadLinerec(model);
// create IBookStore
IBookStore bookstore = new SmartBookStore();
bookstore.SetPrefix(bookPath);
bookstore.Info();
// language model
OcroFST lmodel = OcroFST.MakeOcroFst();
lmodel.Load(langModel);
// iterate lines of pages
for (int page = 0; page < bookstore.NumberOfPages(); page++)
{
int nlines = bookstore.LinesOnPage(page);
Console.WriteLine("Page {0} has {1} lines", page, nlines);
for (int j = 0; j < nlines; j++)
{
int line = bookstore.GetLineId(page, j);
Bytearray image = new Bytearray();
bookstore.GetLine(image, page, line);
Intarray cseg = new Intarray();
bookstore.GetCharSegmentation(cseg, page, line, suffix);
// check missing cseg file
if (cseg.Length() <= 0 && image.Length() > 0)
{
// recognize line
OcroFST fst = OcroFST.MakeOcroFst();
Intarray rseg = new Intarray();
linerec.RecognizeLine(rseg, fst, image);
// find best results
string resText;
Intarray inp = new Intarray();
Floatarray costs = new Floatarray();
double totalCost = BeamSearch.beam_search(out resText, inp, costs, fst, lmodel, 100);
Console.WriteLine(bookstore.PathFile(page, line, suffix));
Console.Write(" beam_search score: {0}", totalCost);
/*string resText2;
fst.BestPath(out resText2);*/
// write cseg to bookstore
string trans;
bookstore.GetLine(out trans, page, line, suffix);
resText = resText.Replace(" ", "");
if (String.IsNullOrEmpty(trans))
{
bookstore.PutLine(resText, page, line, suffix);
Console.Write("; transcript saved");
}
else if (trans == resText)
{
// convert inputs and rseg to cseg
SegmRoutine.rseg_to_cseg(cseg, rseg, inp);
bookstore.PutCharSegmentation(cseg, page, line, suffix);
Console.Write("; cseg saved");
}
else if (saveRseg)
{
// convert inputs and rseg to cseg
SegmRoutine.rseg_to_cseg(cseg, rseg, inp);
//SegmRoutine.remove_small_components(cseg, 4);
/*bookstore.PutCharSegmentation(cseg, page, line, suffix);
Console.Write("; cseg saved");*/
SegmRoutine.make_line_segmentation_white(cseg);
ImgLabels.simple_recolor(cseg);
string v = "rseg";
if (!String.IsNullOrEmpty(suffix)) { v += "."; v += suffix; }
string rsegpath = bookstore.PathFile(page, line, v, "png");
ImgIo.write_image_packed(rsegpath, cseg);
Console.Write("; rseg saved");
}
Console.WriteLine();
}
}
}
}
