是指将PDF文档中的toUnicode cmap表还原为可读的Unicode字符编码。toUnicode cmap表是一种用于将PDF文档中的字符编码映射到Unicode字符的机制。通过还原toUnicode cmap表,可以实现对PDF文档中的字符进行正确的解码和显示。 PDF toUnicode cmap表还原的优势在于能够确保PDF文档中的字符能够正确地被解析和显示,避免出现乱码或...
输出如下所示:可以看到,有许多字符被转换为"(cid : number )“形式。进一步分析后,我发现PDF包含将字符代码映射到字形索引的CMAP。因此,CID是CMAP表中它映射到的字形的字符标识。此外,根据类似问题的评论 浏览332提问于2018-06-09得票数 4 回答已采纳 3回答 从错误的PDF中提取文本 、、 我有一个PDF文件与...
“如果字体字典包含tounicode cmap”-f2没有tounicode cmap。“如果字体是简单字体”-f2不是简单字体。“...
First of all thanks for developing and maintaining PyMuPDF. This is very helpful. I have the following problem: For some fonts in some PDFs some characters cannot be extracted correctly, because their CMap / ToUnicode doesn't make sense ...
Aspose.Pdf.PdfAOptionClasses.ToUnicodeProcessingRules class. This class describes rules which can be used to solve Adobe Preflight error Text cannot be mapped to Unicode
ParameterTypeDescription removeSpaces Boolean sets RemoveSpacesFromCMapNames flag See Also class ToUnicodeProcessingRules namespace Aspose.Pdf.PdfAOptionClasses assembly Aspose.PDFToUnicodeProcessingRules(bool, bool) Constructor Copypublic ToUnicodeProcessingRules(bool removeSpaces, bool mapNonLinkedUnicodesOnSpace...
I suspect the problem here is that the ToUnicode CMap in the original file does not map the character code for the fl ligature to a single Unicode code point. Instead it maps it to two code points; 'f' and 'l'. We expect it to be one, which should be U+FB01. We (not unreasonab...
But what concerns me much more are all these "Error: Illegal entry in bfrange block in ToUnicode CMap" lines... Now, this may well be a bug in the pdffonts utility, which claims to see an error where there is none. However, some change in pdfwrite's handling of (already embedded!
virtual public CMapToUnicode ExportToUnicode() { CMapToUnicode uni = new CMapToUnicode(); int[] keys = map.GetKeys(); foreach (int key in keys) { uni.AddChar(map[key], Utilities.ConvertFromUtf32(key)); } return uni; } Example #4 ...
最近身体有恙，于是就想起来整理下这几年体检的电子报告汇总看看。结果发现在善诊平台下载的体检报告在...