[Bug]: Crash on multiple .pdf files

[olafure]

Describe the bug

Crash on multiple .pdf files. Latest master version.

Steps to reproduce

pip install git+https://github.com/ocrmypdf/OCRmyPDF.git
(.venv) user@host:~/ocr$ ocrmypdf  --version 
16.2.1.dev5+g5caf654

wget https://archive.org/download/PopularMechanics1945/Popular_Mechanics_09_1945.pdf

ocrmypdf -j 1 --pages 45 Popular_Mechanics_09_1945.pdf /tmp/out.pdf 
Scanning contents     ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ 100% 149/149 0:00:00
   45  lots of diacritics - possibly poor OCR                                                                                                                                                                                                 tesseract.py:241
OCR                   ━━━━━━━━━━━╸━━━━━━━━━━━━━━━━━━━━━━━━━━━━  30%  44/149 0:00:01
An exception occurred while executing the pipeline                                                                                                                                                                                              _common.py:284
Traceback (most recent call last):                                                                                                                                                                                                                            
  File "/home/user/ocr-all/.venv/lib/python3.10/site-packages/ocrmypdf/_pipelines/_common.py", line 249, in cli_exception_handler                                                                                                                          
    return fn(options, plugin_manager)                                                                                                                                                                                                                        
  File "/home/user/ocr-all/.venv/lib/python3.10/site-packages/ocrmypdf/_pipelines/ocr.py", line 191, in _run_pipeline                                                                                                                                      
    optimize_messages = exec_concurrent(context, executor)                                                                                                                                                                                                    
  File "/home/user/ocr-all/.venv/lib/python3.10/site-packages/ocrmypdf/_pipelines/ocr.py", line 117, in exec_concurrent                                                                                                                                    
    executor(                                                                                                                                                                                                                                                 
  File "/home/user/ocr-all/.venv/lib/python3.10/site-packages/ocrmypdf/_concurrent.py", line 78, in __call__                                                                                                                                               
    self._execute(                                                                                                                                                                                                                                            
  File "/home/user/ocr-all/.venv/lib/python3.10/site-packages/ocrmypdf/builtin_plugins/concurrency.py", line 144, in _execute                                                                                                                              
    result = future.result()                                                                                                                                                                                                                                  
  File "/usr/lib/python3.10/concurrent/futures/_base.py", line 451, in result                                                                                                                                                                                 
    return self.__get_result()                                                                                                                                                                                                                                
  File "/usr/lib/python3.10/concurrent/futures/_base.py", line 403, in __get_result                                                                                                                                                                           
    raise self._exception                                                                                                                                                                                                                                     
  File "/usr/lib/python3.10/concurrent/futures/thread.py", line 58, in run                                                                                                                                                                                    
    result = self.fn(*self.args, **self.kwargs)                                                                                                                                                                                                               
  File "/home/user/ocr-all/.venv/lib/python3.10/site-packages/ocrmypdf/_pipelines/ocr.py", line 81, in _exec_page_sync                                                                                                                                     
    ocr_out, text_out = _image_to_ocr_text(page_context, ocr_image_out)                                                                                                                                                                                       
  File "/home/user/ocr-all/.venv/lib/python3.10/site-packages/ocrmypdf/_pipelines/ocr.py", line 63, in _image_to_ocr_text                                                                                                                                  
    ocr_out = render_hocr_page(hocr_out, page_context)                                                                                                                                                                                                        
  File "/home/user/ocr-all/.venv/lib/python3.10/site-packages/ocrmypdf/_pipeline.py", line 780, in render_hocr_page                                                                                                                                        
    HocrTransform(                                                                                                                                                                                                                                            
  File "/home/user/ocr-all/.venv/lib/python3.10/site-packages/ocrmypdf/hocrtransform/_hocr.py", line 211, in to_pdf                                                                                                                                        
    self._do_line(                                                                                                                                                                                                                                            
  File "/home/user/ocr-all/.venv/lib/python3.10/site-packages/ocrmypdf/hocrtransform/_hocr.py", line 289, in _do_line                                                                                                                                      
    assert line_box.ury > line_box.lly  # lly is top, ury is bottom                                                                                                                                                                                           
AssertionError                                                                                                                     

Files

https://archive.org/download/PopularMechanics1945/Popular_Mechanics_09_1945.pdf

How did you download and install the software?

PyPI (pip, poetry, pipx, etc.), source build

OCRmyPDF version

16.2.1.dev5+g5caf654

Relevant log output

$ uname -a 
Linux host 6.5.0-28-generic #29~22.04.1-Ubuntu SMP PREEMPT_DYNAMIC Thu Apr  4 14:39:20 UTC 2 x86_64 x86_64 x86_64 GNU/Linux

$ ocrmypdf  --version 
16.2.1.dev5+g5caf654

$ python --version 
Python 3.10.12

[olafure]

Attached a verbose (-V 2) logfile:
log.txt

[jbarlow83]

Can't reproduce here. Possibly, this is a tesseract bug.

What is the output of tesseract --version on the machine that produced the issue?

[olafure]

$ tesseract --version 
tesseract 4.1.1
 leptonica-1.82.0
  libgif 5.1.9 : libjpeg 8d (libjpeg-turbo 2.1.1) : libpng 1.6.37 : libtiff 4.3.0 : zlib 1.2.11 : libwebp 1.2.2 : libopenjp2 2.4.0
 Found SSE
 Found libarchive 3.6.0 zlib/1.2.11 liblzma/5.2.5 bz2lib/1.0.8 liblz4/1.9.3 libzstd/1.4.8

[jbarlow83]

Can you try upgrading to tesseract 5.x?
For Ubuntu here is the PPA.
https://launchpad.net/~alex-p/+archive/ubuntu/tesseract-ocr5

[olafure]

Yep, that solves it, thanks!

tesseract 5.3.4
 leptonica-1.82.0
  libgif 5.1.9 : libjpeg 8d (libjpeg-turbo 2.1.1) : libpng 1.6.37 : libtiff 4.3.0 : zlib 1.2.11 : libwebp 1.2.2 : libopenjp2 2.4.0
 Found SSE4.1
 Found OpenMP 201511
 Found libarchive 3.6.0 zlib/1.2.11 liblzma/5.2.5 bz2lib/1.0.8 liblz4/1.9.3 libzstd/1.4.8
 Found libcurl/7.81.0 OpenSSL/3.0.2 zlib/1.2.11 brotli/1.0.9 zstd/1.4.8 libidn2/2.3.2 libpsl/0.21.0 (+libidn2/2.3.2) libssh/0.9.6/openssl/zlib nghttp2/1.43.0 librtmp/2.3 OpenLDAP/2.5.17
``