private static List <Word> MergeSplitValues(List <Word> words, string pattern)
{
var patternWords = words.Where(x => Regex.IsMatch(x.Text, pattern) && !Regex.IsMatch(x.Text, datePattern))
.ToList();
var lines = GroupInLines(patternWords);
foreach (var orderedLine in lines.Select(line => line.OrderBy(x => x.BoundingRect.X).ToList()))
{
if (orderedLine.Count < 2)
{
continue;
}
var wordsToRemove = new List <Word>();
var newWords = new List <Word>();
Word buffer = null;
for (var i = 1; i < orderedLine.Count; i++)
{
var firstWord = orderedLine[i - 1];
var secondWord = orderedLine[i];
if (CalculateDistance(firstWord, secondWord) <
Math.Min(firstWord.BoundingRect.Height, secondWord.BoundingRect.Height))
{
if (buffer == null)
{
buffer = firstWord + secondWord;
wordsToRemove.Add(firstWord);
wordsToRemove.Add(secondWord);
}
else
{
buffer += secondWord;
wordsToRemove.Add(secondWord);
}
}
else
{
if (buffer != null)
{
i++;
newWords.Add(buffer);
buffer = null;
}
}
}
if (buffer != null)
{
newWords.Add(buffer);
}
words = words.Except(wordsToRemove).ToList();
words = words.Concat(newWords).ToList();
}
return(words);
}
public static List <Word> ConvertGoogleResponse(ResponseObject response)
{
var list = new List <Word>();
foreach (var imageResponse in response.Responses)
{
foreach (var page in imageResponse.FullTextAnnotation.Pages)
{
foreach (var pageBlock in page.Blocks)
{
foreach (var paragraph in pageBlock.Paragraphs)
{
foreach (var word in paragraph.Words)
{
if (word.Confidence < 0.7)
{
continue;
}
var text = string.Empty;
word.Symbols.ForEach(s => text += s.Text);
var x = word.BoundingBox.Vertices[0].X;
var y = word.BoundingBox.Vertices[0].Y;
var bottomVertex =
MathTools.Median(word.Symbols.Select(s => s.BoundingBox.Vertices[2].Y).ToList());
var width = word.BoundingBox.Vertices[2].X - x;
var height = bottomVertex - y;
var rect = new Rect(x, y, width, height);
var newWord = new Word(text, rect);
list.Add(newWord);
}
}
}
}
}
list = MergeSplitDates(list);
const string postalCodePattern = @"\d{2}|[-]|\d{2}[-]|^\d{3}";
list = MergeSplitValues(list, postalCodePattern);
const string monetaryPattern = @"\d+[.,]?\d+|[.,]|\d+";
return(MergeSplitValues(list, monetaryPattern));
}
private static double CalculateDistance(Word w1, Word w2)
{
return(MathTools.GetDistance(w1.BoundingRect.GetCentralPoint(), w2.BoundingRect.GetCentralPoint()));
}
