[PDFBOX-4371] Improve ExtractText utility so that it can extract rotated text automatically

• Type: Improvement
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 2.0.12, 3.0.0 PDFBox
• Fix Version/s: 2.0.13, 3.0.0 PDFBox
• Component/s: Text extraction, Utilities
• Assignee: Tilman Hausherr
• Reporter: Tilman Hausherr
• Created: 08/Nov/18 07:48
• Updated: 01/Nov/20 17:35
• Resolved: 09/Nov/18 18:58

Description

In a first step, detect all rotations by analyzing the effective text rendering matrix. In a second step, do a text extraction for each rotation by prepending an appropriate transform to the page content stream (so that our text has angle == 0) and then filtering any rotated text. Test file: the file from PDFBOX-4368.

Issue Links

• is duplicated by: PDFBOX-878 Incorrect text extraction when text rotation is not 0,90,180,270
• is related to: PDFBOX-4390 ExtractText loses spaces when rotationMagic option is used
• is related to: TIKA-2779 Integrate/parameterize new rotated text handling in PDFBox