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https://github.com/SubtitleEdit/subtitleedit.git
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Tweaking new Tesseract OCR results
git-svn-id: https://subtitleedit.googlecode.com/svn/trunk@759 99eadd0c-20b8-1223-b5c4-2a2b2df33de2
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niksedk
parent
d8ec8464fa
commit
d66ab8b336
@ -2055,7 +2055,7 @@ namespace Nikse.SubtitleEdit.Forms
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}
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private string OcrViaTessnet(Bitmap bitmap, int index)
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{
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{
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if (_ocrFixEngine == null)
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LoadOcrFixEngine();
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@ -2075,23 +2075,52 @@ namespace Nikse.SubtitleEdit.Forms
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if (!textWithOutFixes.Contains(Environment.NewLine) && textWithOutFixes.Length < 17)
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{
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string psm = Tesseract3DoOcrViaExe(bitmap, _languageId, "-psm 7"); // 7 = Treat the image as a single text line.
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if (psm.Length > textWithOutFixes.Length)
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textWithOutFixes = psm;
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else if (psm.Length == textWithOutFixes.Length &&
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(!psm.Contains("0") && textWithOutFixes.Contains("0") || // these chars are often mistaken
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!psm.Contains("9") && textWithOutFixes.Contains("9") ||
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!psm.Contains("1") && textWithOutFixes.Contains("1") ||
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!psm.Contains("$") && textWithOutFixes.Contains("$") ||
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!psm.Contains("/") && textWithOutFixes.Contains("/") ||
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!psm.Contains("(") && textWithOutFixes.Contains("(") ||
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!psm.Contains(")") && textWithOutFixes.Contains(")") ||
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!psm.Contains("_") && textWithOutFixes.Contains("_")))
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textWithOutFixes = psm;
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if (textWithOutFixes != psm)
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{
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if (textWithOutFixes.Trim().Length == 0)
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{
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textWithOutFixes = psm;
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}
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else if (psm.Length > textWithOutFixes.Length)
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{
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if ((!psm.Contains("9") && textWithOutFixes.Contains("9")) ||
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(!psm.Contains("6") && textWithOutFixes.Contains("6")) ||
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(!psm.Contains("5") && textWithOutFixes.Contains("5")) ||
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(!psm.Contains("3") && textWithOutFixes.Contains("3")) ||
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(!psm.Contains("1") && textWithOutFixes.Contains("1")) ||
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(!psm.Contains("$") && textWithOutFixes.Contains("$")) ||
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(!psm.Contains("€") && textWithOutFixes.Contains("€")))
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textWithOutFixes = psm;
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}
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else if (psm.Length == textWithOutFixes.Length &&
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(!psm.Contains("0") && textWithOutFixes.Contains("0") || // these chars are often mistaken
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!psm.Contains("9") && textWithOutFixes.Contains("9") ||
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!psm.Contains("8") && textWithOutFixes.Contains("8") ||
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!psm.Contains("5") && textWithOutFixes.Contains("5") ||
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!psm.Contains("3") && textWithOutFixes.Contains("3") ||
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!psm.Contains("1") && textWithOutFixes.Contains("1") ||
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!psm.Contains("$") && textWithOutFixes.Contains("$") ||
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!psm.Contains("€") && textWithOutFixes.Contains("€") ||
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!psm.Contains("/") && textWithOutFixes.Contains("/") ||
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!psm.Contains("(") && textWithOutFixes.Contains("(") ||
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!psm.Contains(")") && textWithOutFixes.Contains(")") ||
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!psm.Contains("_") && textWithOutFixes.Contains("_")))
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{
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textWithOutFixes = psm;
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}
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else if (psm.Length == textWithOutFixes.Length && psm.EndsWith(".") && !textWithOutFixes.EndsWith("."))
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{
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textWithOutFixes = psm;
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}
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}
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}
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if (textWithOutFixes.ToString().Trim().Length == 0)
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textWithOutFixes = TesseractResizeAndRetry(bitmap);
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if (textWithOutFixes.Contains("<i>") && Utilities.CountTagInText(textWithOutFixes, "<i>") > 1)
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textWithOutFixes = "<i>" + textWithOutFixes.Replace("<i>", string.Empty).Replace("</i>", string.Empty) + "</i>";
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int numberOfWords = textWithOutFixes.ToString().Split((" " + Environment.NewLine).ToCharArray(), StringSplitOptions.RemoveEmptyEntries).Length;
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string line = textWithOutFixes.ToString().Trim();
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@ -2124,7 +2153,7 @@ namespace Nikse.SubtitleEdit.Forms
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}
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}
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if (wordsNotFound > 0 || correctWords == 0 || textWithOutFixes != null && textWithOutFixes.ToString().Replace("~", string.Empty).Trim().Length == 0)
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if (wordsNotFound > 0 || correctWords == 0 || textWithOutFixes != null && textWithOutFixes.ToString().Replace("~", string.Empty).Trim().Length < 2)
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{
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_ocrFixEngine.AutoGuessesUsed.Clear();
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_ocrFixEngine.UnknownWordsFound.Clear();
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@ -2139,7 +2168,7 @@ namespace Nikse.SubtitleEdit.Forms
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if (modiText.Length == 0)
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modiText = CallModi(index); // retry... strange MODI
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if (modiText.Length > 1 && !modiText.Contains("0") && !modiText.Contains("9") &&
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if (modiText.Length > 1 && (!modiText.Contains("0") || line.Contains("0")) && (!modiText.Contains("9") || line.Contains("9")) &&
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Utilities.CountTagInText(modiText,"(") < 2 && Utilities.CountTagInText(modiText,")") < 2)
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{
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int modiWordsNotFound = _ocrFixEngine.CountUnknownWordsViaDictionary(modiText, out correctWords);
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@ -2153,8 +2182,10 @@ namespace Nikse.SubtitleEdit.Forms
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modiText = modiTextOcrFixed;
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}
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if (modiWordsNotFound < wordsNotFound)
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if (modiWordsNotFound < wordsNotFound || (textWithOutFixes.Length == 1 && modiWordsNotFound == 0))
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line = modiText; // use the modi ocr'ed text
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else if (wordsNotFound == modiWordsNotFound && modiText.EndsWith("!") && (line.EndsWith("l") || line.EndsWith("fl")))
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line = modiText;
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}
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// take the best option - before ocr fixing, which we do again to save suggestions and prompt for user input
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@ -2187,7 +2218,7 @@ namespace Nikse.SubtitleEdit.Forms
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subtitleListView1.SetBackgroundColor(index, Color.Red);
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if (wordsNotFound == 2)
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subtitleListView1.SetBackgroundColor(index, Color.Orange);
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else if (wordsNotFound == 1)
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else if (wordsNotFound == 1 || line.Length == 1)
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subtitleListView1.SetBackgroundColor(index, Color.Yellow);
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else if (line.Trim().Length == 0)
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subtitleListView1.SetBackgroundColor(index, Color.Orange);
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@ -297,7 +297,7 @@ namespace Nikse.SubtitleEdit.Logic.OCR
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string lastWord = null;
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for (int i = 0; i < text.Length; i++)
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{
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if (" ¡¿,.!?:;()[]{}+-$£\"#&%\r\n".Contains(text[i].ToString()))
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if (" ¡¿,.!?:;()[]{}+-£\"#&%\r\n".Contains(text[i].ToString())) // removed $
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{
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if (word.Length > 0)
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{
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@ -319,7 +319,7 @@ namespace Nikse.SubtitleEdit.Logic.OCR
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else
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{
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word.Append(text[i]);
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}
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}
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}
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if (word.Length > 0) // last word
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{
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@ -929,6 +929,12 @@ namespace Nikse.SubtitleEdit.Logic.OCR
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newText = sb.ToString().TrimEnd('\r').TrimEnd('\n').TrimEnd('\r').TrimEnd('\n');
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newText = pre + newText;
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string post = string.Empty;
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if (newText.EndsWith("</i>"))
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{
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newText = newText.Remove(newText.Length - 4, 4);
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post = "</i>";
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}
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foreach (string from in _endLineReplaceList.Keys)
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{
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if (newText.EndsWith(from))
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@ -937,6 +943,7 @@ namespace Nikse.SubtitleEdit.Logic.OCR
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newText = newText.Remove(position).Insert(position, _endLineReplaceList[from]);
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}
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}
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newText += post;
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foreach (string from in _partialLineReplaceList.Keys)
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{
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@ -952,6 +959,16 @@ namespace Nikse.SubtitleEdit.Logic.OCR
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{
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List<string> localIgnoreWords = new List<string>();
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wordsNotFound = 0;
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if (line.Length == 1 && !IsWordKnownOrNumber(line, line))
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{
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SpellcheckOcrTextResult res = SpellcheckOcrText(line, bitmap, new string[1] { line}, 0, line, localIgnoreWords);
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if (res.FixedWholeLine || res.Fixed)
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return res.Line;
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wordsNotFound++;
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return line;
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}
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if (_hunspell == null)
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return line;
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@ -1003,6 +1020,25 @@ namespace Nikse.SubtitleEdit.Logic.OCR
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if (!correct && !line.Contains(word))
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correct = true; // already fixed
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if (!correct)
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{
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//look for match via dash'ed word, e.g. sci-fi
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string dashedWord = GetDashedWordBefore(wordNoItalics, line, words, i);
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if (!string.IsNullOrEmpty(dashedWord))
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{
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correct = IsWordKnownOrNumber(dashedWord, line);
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if (!correct)
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correct = DoSpell(dashedWord);
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}
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dashedWord = GetDashedWordAfter(wordNoItalics, line, words, i);
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if (!string.IsNullOrEmpty(dashedWord))
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{
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correct = IsWordKnownOrNumber(dashedWord, line);
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if (!correct)
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correct = DoSpell(dashedWord);
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}
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}
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if (!correct)
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{
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wordsNotFound++;
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@ -1104,6 +1140,22 @@ namespace Nikse.SubtitleEdit.Logic.OCR
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return line;
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}
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private string GetDashedWordBefore(string word, string line, string[] words, int index)
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{
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if (index > 1 && line.Contains(words[index - 1] + "-" + word))
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return words[index - 1] + "-" + word;
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return null;
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}
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private string GetDashedWordAfter(string word, string line, string[] words, int index)
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{
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if (index < words.Length - 1 && line.Contains(word + "-" + words[index + 1]))
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return word + "-" + words[index + 1];
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return null;
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}
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private string GetWordWithDominatedCasing(string word)
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{
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string uppercaseLetters = Utilities.GetLetters(true, false, false);
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@ -205,6 +205,9 @@ namespace Nikse.SubtitleEdit.Logic.VobSub
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private Bitmap GenerateBitmap(Rectangle imageDisplayArea, int imageTopFieldDataAddress, int imageBottomFieldDataAddress, List<Color> fourColors)
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{
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if (imageDisplayArea.Width <= 0 || imageDisplayArea.Height <= 0)
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return new Bitmap(1,1);
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var bmp = new Bitmap(imageDisplayArea.Width + 1, imageDisplayArea.Height + 1);
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if (fourColors[0] != Color.Transparent)
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{
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