[PDFBOX-4607] Transparent 16 bit image doesn't display in Adobe Reader

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 2.0.12, 2.0.16
• Fix Version/s: 2.0.17, 3.0.0 PDFBox
• Component/s: Rendering
• Labels: regression
• External issue URL: https://stackoverflow.com/questions/57187261/
• Assignee: Tilman Hausherr
• Reporter: Tilman Hausherr
• Created: 25/Jul/19 03:56
• Updated: 30/Jun/20 06:13
• Resolved: 25/Jul/19 17:02

Description

Thomas on stackoverflow has very simple code that creates a PDF from a 16 bit PNG image. The PDF displays fine on Adobe Reader in 2.0.8 but no longer since 2.0.12. It displays on all other viewers I've tried: PDFBox, GS, PDF.js and Chrome. It works on Adobe Reader when disabling the predictor logic in LosslessFactory.java. Thomas and I narrowed the problem last evening and now he has a non confidential file for us and also a workaround on his side.

To reproduce the problem I used the ImageToPDF example.

cc Emmeran Seehuber

the "bad" file has imageType custom, colorspace with getNumComponents = 1, 8 bpc, data buffer TYPE_BYTE

Issue Links

• is broken by: PDFBOX-4184 [PATCH]: Support simple lossless compression of 16 bit RGB images