[TIKA-2970] Configuring Tesseract for OCR of PDF via Tika Config is not working

• Type: Improvement
• Status: Resolved
• Priority: Critical
• Resolution: Fixed
• Affects Version/s: 1.22
• Fix Version/s: 1.23
• Component/s: ocr
• Assignee: Tim Allison
• Reporter: Eric Pugh
• Created: 20/Oct/19 20:10
• Updated: 14/Oct/21 14:46
• Resolved: 21/Oct/19 15:26

Description

Based on TIKA-2705, I thought I could eliminate the use of the properties files for configuring PDF and OCR processing, and just use a tika-config.xml file.

I believe I have a unit test that demonstrates that if you need to override the tesseract path for OCR, you end up always with the default Tesseract configuration, which leads to Tika throwing an error: https://github.com/apache/tika/blob/master/tika-parsers/src/main/java/org/apache/tika/parser/pdf/AbstractPDF2XHTML.java#L328

In stepping through the code, it seems like every time we consult the context:

```
TesseractOCRConfig tesseractConfig =
context.get(TesseractOCRConfig.class, DEFAULT_TESSERACT_CONFIG);
```
We always get back the default. The context never has our customized TesseractOCRConfig! Despite the fact that when we load up the TikaConfig in the first case, I notice that we do create a TesseractOCRParser object WITH the various parameters...

Issue Links

• relates to: TIKA-2705 Allow configuration of TesseractOCRParser as we do for other parsers