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" + note + "</div>"; spans[i].innerHTML = "[<a id='_footnoteref_" + n + "' href='#_footnote_" + n + "' title='View footnote' class='footnote'>" + n + "</a>]"; var id =spans[i].getAttribute("id"); if (id != null) refs["#"+id] = n; } } if (n == 0) noteholder.parentNode.removeChild(noteholder); else { // Process footnoterefs. for (i=0; i<spans.length; i++) { if (spans[i].className == "footnoteref") { var href = spans[i].getElementsByTagName("a")[0].getAttribute("href"); href = href.match(/#.*/)[0]; // Because IE return full URL. n = refs[href]; spans[i].innerHTML = "[<a href='#_footnote_" + n + "' title='View footnote' class='footnote'>" + n + "</a>]"; } } } } } /*]]>*/ </script> </head> <body> <div id="header"> <h1> UNICHARAMBIGS(5) Manual Page </h1> <h2>NAME</h2> <div class="sectionbody"> <p>unicharambigs - Tesseract unicharset ambiguities </p> </div> </div> <div id="content"> <h2 id="_description">DESCRIPTION</h2> <div class="sectionbody"> <div class="paragraph"><p>The unicharambigs file (a component of traineddata, see combine_tessdata(1) ) is used by Tesseract to represent possible ambiguities between characters, or groups of characters.</p></div> <div class="paragraph"><p>The file contains a number of lines, laid out as follow:</p></div> <div class="literalblock"> <div class="content"> <pre><tt>[num] <TAB> [char(s)] <TAB> [num] <TAB> [char(s)] <TAB> [num]</tt></pre> </div></div> <div class="hdlist"><table> <tr> <td class="hdlist1"> Field one <br /> </td> <td class="hdlist2"> <p style="margin-top: 0;"> the number of characters contained in field two </p> </td> </tr> <tr> <td class="hdlist1"> Field two <br /> </td> <td class="hdlist2"> <p style="margin-top: 0;"> the character sequence to be replaced </p> </td> </tr> <tr> <td class="hdlist1"> Field three <br /> </td> <td class="hdlist2"> <p style="margin-top: 0;"> the number of characters contained in field four </p> </td> </tr> <tr> <td class="hdlist1"> Field four <br /> </td> <td class="hdlist2"> <p style="margin-top: 0;"> the character sequence used to replace field two </p> </td> </tr> <tr> <td class="hdlist1"> Field five <br /> </td> <td class="hdlist2"> <p style="margin-top: 0;"> contains either 1 or 0. 1 denotes a mandatory replacement, 0 denotes an optional replacement. </p> </td> </tr> </table></div> <div class="paragraph"><p>Characters appearing in fields two and four should appear in unicharset. The numbers in fields one and three refer to the number of unichars (not bytes).</p></div> </div> <h2 id="_example">EXAMPLE</h2> <div class="sectionbody"> <div class="literalblock"> <div class="content"> <pre><tt>2 ' ' 1 " 1 1 m 2 r n 0 3 i i i 1 m 0</tt></pre> </div></div> <div class="paragraph"><p>In this example, all instances of the <em>2</em> character sequence <em>'</em>' will <strong>always</strong> be replaced by the <em>1</em> character sequence <em>"</em>; a <em>1</em> character sequence <em>m</em> <strong>may</strong> be replaced by the <em>2</em> character sequence <em>rn</em>, and the <em>3</em> character sequence <strong>may</strong> be replaced by the <em>1</em> character sequence <em>m</em>.</p></div> </div> <h2 id="_history">HISTORY</h2> <div class="sectionbody"> <div class="paragraph"><p>The unicharambigs file first appeared in Tesseract 3.00; prior to that, a similar format, called DangAmbigs (<em>dangerous ambiguities</em>) was used: the format was almost identical, except only mandatory replacements could be specified, and field 5 was absent.</p></div> </div> <h2 id="_bugs">BUGS</h2> <div class="sectionbody"> <div class="paragraph"><p>This is a documentation "bug": it’s not currently clear what should be done in the case of ligatures (such as <em>fi</em>) which may also appear as regular letters in the unicharset.</p></div> </div> <h2 id="_see_also">SEE ALSO</h2> <div class="sectionbody"> <div class="paragraph"><p>tesseract(1), unicharset(5)</p></div> </div> <h2 id="_author">AUTHOR</h2> <div class="sectionbody"> <div class="paragraph"><p>The Tesseract OCR engine was written by Ray Smith and his research groups at Hewlett Packard (1985-1995) and Google (2006-present).</p></div> </div> </div> <div id="footnotes"><hr /></div> <div id="footer"> <div id="footer-text"> Last updated 2012-02-08 10:59:49 PDT </div> </div> </body> </html>