Tesseract OCR - 5.2.0

This is a new minor version of Tesseract 5.

Improvements and fixes for continuous integration,
autoconf and cmake builds.
Set /Os for some 32 bit MS compilers (fixes #3769).
Improve comments and other documentation.
Add initial support for Intel AVX512F.
Fix for very large PDF files on 32 bit hosts (fixes #3805).
Fix NEON detection on FreeBSD.
Fix regression with UZN files (fixes #3837).
Fix calling delete[] for memory allocated by malloc in C API.
Add an API function to init tesseract with traineddata from memory
(fixes #3691).
Replace direct access to Leptonica internal data structures by
function calls and support latest releases of Leptonica.
Replace std::regex by std::string functions (fixes issue #3830).
Use compiled-in TESSDATA_PREFIX also on Windows (fixes #3767).
Add new parameter 'invert_threshold', change the default threshold
from 0.5 to 0.7 and mark parameter 'tessedit_do_invert' as deprecated.

Details