Tabular Data - Read Column By Column

[tmgcassidy]

Is there any way to leverage Tesseract for table extraction? Below is an example of a table I would need to extract Chinese Characters (Simplified) from.

[blackholeearth]

For tesseract.exe, You need to use hocr command. İt gives x,y cordination of recognized text in html.

You have to enable wordLevelSegmentation.
(İ dont know the exact cmd commands.)

---

For c# https://stackoverflow.com/questions/51282214/tesseract-ocr-text-position

You can specify word segmentation in c# code.

\\how to use
Void Main()
{
\\ İm writing on AndroidPhone.
\\ img is either. 
Var img =  "imgFilePath.jpg";
\\ or
Var img = bitmap("imgFilePath.jpg");

var li1 = GetWordsFromImage(img);
var TessWord_li = AssignColumnNo (li1);

Var AllColumnNos = TessWord_li.Select(x=>x.ColumnNo). Distinct ().ToList();

\\\get the 1st n 2nd Column. Etc
Var wordsThatAreOn_col1 = TessWord_li.Where(x=>x.ColumnNo==1).ToList();
Var wordsThatAreOn_col2 = TessWord_li.Where(x=>x.ColumnNo==2).ToList();


}

\\ required class and functions
Class tessWord
{
  Public String Text;
  Public Rectangle rect; // bounds
  Public Rectangle  rectYCordZeroed; 
  Public int ColumnNo=0;
}

List<TessWord> GetWordsFromImage(img)
{
   Var tessWord_li = new List<TessWord>();
   var myLevel = 
   Tesseract.PageIteratorLevel.Word;
   using (var page = Engine.Process(img))
   using (var iter = page.GetIterator())
   {
       iter.Begin();
       do
       {
          Rectangle curRect;
           if (iter.TryGetBoundingBox(myLevel, out var curRect))
           {
            var curText = iter.GetText(myLevel);
  
          // Add recognized word ToList
           Var w= new tessWord (){
              Text =curText,
             Rect = curRect,   
             \\Set  rectangle Ycord to zero
            rectYCordZeroed = /*todo */ ;
           };
           TessWord_li.Add(w);
        }
    } while (iter.Next(myLevel));

}
}

List<tessWord> AssignColumnNo(t  List<TessWord> tessWord_li )
{

Foreach(var word1 in TessWord_li)
Foreach(var word2 in TessWord_li)
{
   İf (Word1.rectYzero.intersects( word2.rectYZero) )
   {
      \\Two words on same column.
      If(Word1.ColumnNo ==0)
      {
         \\if word has noColNo. Give it new ColNo
         Word1.ColumnNo = TessWord_li.Select(x=>x.ColumnNo).Max()+1;
      }
      Word2.ColumnNo = Word1.ColumnNo;
   }
}
 return tessWord_li; 
}