mirror of
https://github.com/SubtitleEdit/subtitleedit.git
synced 2024-10-26 23:12:38 +02:00
Improve "Binary OCR" italic detection - thx teodargent :)
Fix 3729
This commit is contained in:
niksedk
parent
54aefa951a
commit
f86a7e0f2c
BIN
Ocr/Latin.db
BIN
Ocr/Latin.db
Binary file not shown.
@ -13,18 +13,114 @@ namespace Nikse.SubtitleEdit.Logic.Ocr
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public static string GetStringWithItalicTags(List<VobSubOcr.CompareMatch> matches)
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{
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var numberOfLetters = GetNumberOfLetters(matches);
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var numberOfItalicLetters = GetNumberOfItalicLetters(matches);
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if (numberOfItalicLetters == numberOfLetters || numberOfItalicLetters > 2 && numberOfLetters - numberOfItalicLetters < 2)
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var sb = new StringBuilder();
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foreach (var lineMatches in SplitMatchsToLines(matches))
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{
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return "<i>" + GetRawString(matches) + "</i>";
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var numberOfLetters = GetNumberOfLetters(lineMatches);
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var numberOfItalicLetters = GetNumberOfItalicLetters(lineMatches);
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if (numberOfItalicLetters == numberOfLetters || numberOfItalicLetters > 2 && numberOfLetters - numberOfItalicLetters < 2)
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{
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sb.AppendLine("<i>" + GetRawString(lineMatches) + "</i>");
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}
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else if (numberOfItalicLetters == 0 || numberOfLetters > 2 && numberOfItalicLetters < 2)
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{
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sb.AppendLine(GetRawString(lineMatches));
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}
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else
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{
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sb.AppendLine(GetStringWithItalicTagsMixed(lineMatches));
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}
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}
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if (numberOfItalicLetters == 0 || numberOfLetters > 2 && numberOfItalicLetters < 2)
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return sb.ToString().TrimEnd().Replace("</i>" + Environment.NewLine + "<i>", Environment.NewLine);
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}
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private static string GetStringWithItalicTagsMixed(List<VobSubOcr.CompareMatch> lineMatches)
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{
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var sb = new StringBuilder();
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int italicCount = 0;
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bool italicOn = false;
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var sbWord = new StringBuilder();
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string prevSpace = string.Empty;
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for (int i = 0; i < lineMatches.Count; i++)
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{
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return GetRawString(matches);
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var m = lineMatches[i];
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if (m.Text == " " || m.Text == "-")
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{
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if (sbWord.Length > 0)
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{
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italicOn = AddWord(sb, italicCount, italicOn, sbWord, prevSpace);
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prevSpace = m.Text;
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sbWord = new StringBuilder();
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italicCount = 0;
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}
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}
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else if (m.Text != null)
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{
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sbWord.Append(m.Text);
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if (m.Italic)
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{
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italicCount += m.Text.Length;
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}
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}
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}
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italicOn = AddWord(sb, italicCount, italicOn, sbWord, prevSpace);
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if (italicOn)
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{
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sb.Append("</i>");
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}
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return sb.ToString().Trim();
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}
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private static bool AddWord(StringBuilder sb, int italicCount, bool italicOn, StringBuilder sbWord, string prevSpace)
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{
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var w = sbWord.ToString();
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var wordIsItalic = italicCount > w.Length / 2.0;
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if (wordIsItalic && italicOn)
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{
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sb.Append(prevSpace + sbWord);
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}
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else if (wordIsItalic)
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{
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sb.Append(prevSpace + "<i>" + sbWord);
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italicOn = true;
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}
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else if (!wordIsItalic && italicOn)
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{
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sb.Append("</i>" + prevSpace + sbWord);
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italicOn = false;
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}
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else
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{
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sb.Append(prevSpace + sbWord);
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}
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return GetStringWithItalicTagsMixed(matches);
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return italicOn;
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}
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private static List<List<VobSubOcr.CompareMatch>> SplitMatchsToLines(List<VobSubOcr.CompareMatch> matches)
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{
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var result = new List<List<VobSubOcr.CompareMatch>>();
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var line = new List<VobSubOcr.CompareMatch>();
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for (int i = 0; i < matches.Count; i++)
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{
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if (matches[i].Text == Environment.NewLine)
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{
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if (line.Count > 0)
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{
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result.Add(line);
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line = new List<VobSubOcr.CompareMatch>();
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}
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}
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else
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{
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line.Add(matches[i]);
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}
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}
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if (line.Count > 0)
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{
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result.Add(line);
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}
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return result;
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}
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private static string GetRawString(List<VobSubOcr.CompareMatch> matches)
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@ -68,243 +164,5 @@ namespace Nikse.SubtitleEdit.Logic.Ocr
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}
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return count;
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}
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public static string GetStringWithItalicTagsMixed(List<VobSubOcr.CompareMatch> matches)
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{
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var paragraph = new StringBuilder();
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var line = new StringBuilder();
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var word = new StringBuilder();
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int lettersItalics = 0;
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int lettersNonItalics = 0;
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int lineLettersNonItalics = 0;
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int wordItalics = 0;
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int wordNonItalics = 0;
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bool isItalic = false;
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bool allItalic = true;
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for (int i = 0; i < matches.Count; i++)
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{
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string text = matches[i].Text;
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if (text != null)
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{
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bool italic = matches[i].Italic;
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if (Seperators.Contains(text) && word.Length > 0)
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{
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ItalicsWord(line, ref word, ref lettersItalics, ref lettersNonItalics, ref wordItalics, ref wordNonItalics, ref isItalic, text);
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}
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else if (text == Environment.NewLine)
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{
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ItalicsWord(line, ref word, ref lettersItalics, ref lettersNonItalics, ref wordItalics, ref wordNonItalics, ref isItalic, "");
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ItalianLine(paragraph, ref line, ref allItalic, ref wordItalics, ref wordNonItalics, ref isItalic, Environment.NewLine, lineLettersNonItalics);
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lineLettersNonItalics = 0;
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}
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else
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{
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bool isMixedCaseWithoutDashAndAlike = IsMixedCaseWithoutDashAndAlike(matches, i, out var italicOrNot);
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if (Seperators.Contains(text) && !isMixedCaseWithoutDashAndAlike && word.Length > 0)
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{
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italic = italicOrNot;
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}
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if (italic)
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{
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word.Append(text);
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lettersItalics += text.Length;
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}
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else
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{
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word.Append(text);
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lettersNonItalics += text.Length;
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lineLettersNonItalics += text.Length;
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}
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}
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}
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}
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if (word.Length > 0)
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{
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ItalicsWord(line, ref word, ref lettersItalics, ref lettersNonItalics, ref wordItalics, ref wordNonItalics, ref isItalic, "");
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}
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if (line.Length > 0)
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{
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ItalianLine(paragraph, ref line, ref allItalic, ref wordItalics, ref wordNonItalics, ref isItalic, "", lineLettersNonItalics);
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}
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if (allItalic && matches.Count > 0)
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{
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var temp = HtmlUtil.RemoveOpenCloseTags(paragraph.ToString(), HtmlUtil.TagItalic);
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paragraph.Clear();
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paragraph.Append("<i>");
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paragraph.Append(temp);
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paragraph.Append("</i>");
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}
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var result = paragraph.ToString();
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result = result.Replace("</i>'' <i>", "'' ");
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result = result.Replace("</i>' <i>", "' ");
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result = result.Replace("</i>\" <i>", "\" ");
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result = result.Replace("</i> \"<i>", " \"");
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result = result.Replace("<i>-</i>", "-");
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result = result.Replace("<i>.</i>", ".");
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if (result.Contains("'</i>") || result.Contains("\"</i>"))
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{
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result = result.Replace(" '<i>'", " <i>''");
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}
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else if (result.Contains("</i>'") || result.Contains("</i>\""))
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{
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result = result.Replace(" '<i>'", " ''<i>");
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}
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if (result.StartsWith("'<i>'", StringComparison.Ordinal))
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{
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if (result.Contains("'</i>") || result.Contains("\"</i>"))
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{
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result = "<i>''" + result.Remove(0, 5);
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}
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else if (result.Contains("</i>'") || result.Contains("</i>\""))
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{
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result = "''<i>" + result.Remove(0, 5);
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}
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}
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if (result.EndsWith("'</i>'", StringComparison.Ordinal))
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{
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if (result.Contains("<i>'") || result.Contains("<i>\""))
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{
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result = result.Substring(0, result.Length - 6) + "''</i>";
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}
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else if (result.Contains("'<i>") || result.Contains("\"<i>"))
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{
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result = result.Substring(0, result.Length - 6) + "</i>''";
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}
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}
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result = result.Replace(" ", " ");
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return result;
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}
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private static bool IsMixedCaseWithoutDashAndAlike(List<VobSubOcr.CompareMatch> matches, int startIndex, out bool italicOrNot)
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{
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while (startIndex > 0 && (matches[startIndex - 1].Text == " " || matches[startIndex - 1].Text == Environment.NewLine))
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{
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startIndex--;
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}
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int italicCount = 0;
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int nonItalicCount = 0;
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for (int i = startIndex; i < matches.Count; i++)
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{
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var m = matches[i];
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if (m.Text != null)
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{
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if (m.Text == "-" || m.Text == "—" || m.Text == "." || m.Text == "'")
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{
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}
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else if (m.Italic)
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{
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italicCount++;
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}
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else
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{
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nonItalicCount++;
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}
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if (m.Text == " " || m.Text == Environment.NewLine)
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{
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break;
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}
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}
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}
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italicOrNot = italicCount > 0;
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return italicCount > 0 && nonItalicCount > 0;
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}
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private static void ItalianLine(StringBuilder paragraph, ref StringBuilder line, ref bool allItalic, ref int wordItalics, ref int wordNonItalics, ref bool isItalic, string appendString, int lineLettersNonItalics)
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{
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if (isItalic)
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{
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line.Append("</i>");
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isItalic = false;
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}
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if (wordItalics > 0
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&& (wordNonItalics == 0 || wordNonItalics < 2 && lineLettersNonItalics < 3 && line.ToString().TrimStart().StartsWith('-')))
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{
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paragraph.Append("<i>");
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paragraph.Append(HtmlUtil.RemoveOpenCloseTags(line.ToString(), HtmlUtil.TagItalic));
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paragraph.Append("</i>");
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paragraph.Append(appendString);
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}
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else
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{
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allItalic = false;
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if (wordItalics > 0)
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{
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string temp = line.ToString().Replace(" </i>", "</i> ");
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line.Clear();
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line.Append(temp);
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}
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paragraph.Append(line);
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paragraph.Append(appendString);
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}
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line.Clear();
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wordItalics = 0;
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wordNonItalics = 0;
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}
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private static void ItalicsWord(StringBuilder line, ref StringBuilder word, ref int lettersItalics, ref int lettersNonItalics, ref int wordItalics, ref int wordNonItalics, ref bool isItalic, string appendString)
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{
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if (appendString == "." && lettersItalics > 0 && lettersNonItalics == 0)
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{
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line.Append(word);
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line.Append(appendString);
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}
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else if (line.Length == 0 && !isItalic && lettersItalics == 0 && lettersNonItalics == 1 && word.ToString() == "-")
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{
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line.Append(word);
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word.Clear();
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word.Append(appendString);
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lettersItalics = 0;
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lettersNonItalics = 0;
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return;
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}
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else if (lettersItalics >= lettersNonItalics && lettersItalics > 0)
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{
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if (!isItalic)
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{
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line.Append("<i>");
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}
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line.Append(word + appendString);
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wordItalics++;
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isItalic = true;
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}
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else
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{
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if (appendString == "\"" && isItalic && !line.ToString().Contains("\"<i>"))
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{
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line.Append(appendString);
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line.Append("</i>");
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isItalic = false;
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}
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else
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{
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if (isItalic)
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{
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line.Append("</i>");
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isItalic = false;
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}
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line.Append(word);
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line.Append(appendString);
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}
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wordNonItalics++;
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}
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word.Clear();
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lettersItalics = 0;
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lettersNonItalics = 0;
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}
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}
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}
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@ -98,6 +98,29 @@ namespace Test.Logic.Ocr
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Assert.AreEqual("He said <i>now!</i>", result);
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}
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public void TestWordInItalicSecondLine()
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{
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var matches = new List<VobSubOcr.CompareMatch>
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{
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new VobSubOcr.CompareMatch("J", false, 0, Guid.NewGuid().ToString()),
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new VobSubOcr.CompareMatch("o", false, 0, Guid.NewGuid().ToString()),
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new VobSubOcr.CompareMatch("e", false, 0, Guid.NewGuid().ToString()),
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new VobSubOcr.CompareMatch(":", false, 0, Guid.NewGuid().ToString()),
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new VobSubOcr.CompareMatch("\r", false, 0, Guid.NewGuid().ToString()),
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new VobSubOcr.CompareMatch("\n", false, 0, Guid.NewGuid().ToString()),
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new VobSubOcr.CompareMatch("G", true, 0, Guid.NewGuid().ToString()),
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new VobSubOcr.CompareMatch("o", true, 0, Guid.NewGuid().ToString()),
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new VobSubOcr.CompareMatch("d", true, 0, Guid.NewGuid().ToString()),
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new VobSubOcr.CompareMatch("b", true, 0, Guid.NewGuid().ToString()),
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new VobSubOcr.CompareMatch("y", true, 0, Guid.NewGuid().ToString()),
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new VobSubOcr.CompareMatch("e", true, 0, Guid.NewGuid().ToString()),
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new VobSubOcr.CompareMatch("!", true, 0, Guid.NewGuid().ToString()),
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};
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string result = MatchesToItalicStringConverter.GetStringWithItalicTags(matches);
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Assert.AreEqual("Joe:\r\n<i>Godbye!</i>", result);
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}
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[TestMethod]
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public void TestPartInItalic()
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{
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