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Author SHA1 Message Date
Shree
edf6e0f433 Actions CI: Add vcpkg build for tesseract 4.1 2021-03-12 04:59:41 +00:00
Stefan Weil
fc00834920 autobuild: Require C++17 
This completes commit 73a325494e.

Signed-off-by: Stefan Weil <sw@weilnetz.de>
 2021-03-11 21:57:02 +01:00
Ger Hobbelt
779aa79350
Fix build (#3322) 
* fix errors after merge commit: missing changes that are needed too to make this codebase compile.
* Update src/wordrec/wordrec.h

Co-authored-by: Stefan Weil <sw@weilnetz.de>
 2021-03-11 21:43:07 +01:00
Egor Pugin
3444618075 Fix linux build. 2021-03-10 15:35:13 +03:00
Egor Pugin
ce058604ba Pass empty strings into Tesseract::init_tesseract(). 2021-03-10 15:21:03 +03:00
Egor Pugin
911dd93f12 Pass init strings as std::string instead of const char * internally. This does not affect public APIs. 2021-03-10 15:17:00 +03:00
Egor Pugin
9792f3c4ff Remove STRING::size() method. 2021-03-10 14:58:37 +03:00
Egor Pugin
6de97309a1 Remove unused STRING::strdup(). 2021-03-10 14:42:50 +03:00
Egor Pugin
f0e30a2af2 Remove unused STRING::unsigned_size(). 2021-03-10 14:41:31 +03:00
Egor Pugin
d36adf3d40 Replace STRING::truncate_at() with resize(). 2021-03-10 14:40:28 +03:00
Egor Pugin
e9a2fc0083 More std::string replacements. 2021-03-10 14:36:59 +03:00
Egor Pugin
73a325494e
[cmake] Require C++17. 2021-03-10 00:41:47 +03:00
Stefan Weil
0f1296c6f6 Clean implementation for (de-)serialization of a vector 
Signed-off-by: Stefan Weil <sw@weilnetz.de>
 2021-03-08 13:33:48 +01:00
Egor Pugin
0cd6a07e42
Update .travis.yml 2021-03-08 03:02:25 +03:00
Stefan Weil
6cfe604d58 Fix serialization for vector of RecodedCharID 
Signed-off-by: Stefan Weil <sw@weilnetz.de>
 2021-03-07 23:01:25 +01:00
Shreeshrii
33868a52ae
Travis: build linux matrix (#3320) 2021-03-07 19:31:02 +01:00
Egor Pugin
576c064b44
Merge pull request #3318 from Shreeshrii/travis 
Add multiple architectures for travis run
 2021-03-06 12:20:25 +03:00
Shree Devi Kumar
4fd0bca6c9 Add multiple architectures for travis run 2021-03-06 08:30:14 +00:00
Stefan Weil
0cde3ede98 Add heuristic to fix swap (partially fixes issue #2586) 
Signed-off-by: Stefan Weil <sw@weilnetz.de>
 2021-03-05 14:27:28 +01:00
Stefan Weil
a2769aebb4 Replace GenericVector<TBOX> by std::vector<TBOX> 
Fix also endianness handling for (de)serialisation of TBOX.

Signed-off-by: Stefan Weil <sw@weilnetz.de>
 2021-03-05 14:27:28 +01:00
Stefan Weil
c31c1a7d60 Fix two compiler warnings for serialis.h 
Signed-off-by: Stefan Weil <sw@weilnetz.de>
 2021-03-05 14:27:28 +01:00
Stefan Weil
fe614c6069 Enable less FP exceptions for clang compiler when running tesseract 
Signed-off-by: Stefan Weil <sw@weilnetz.de>
 2021-03-03 22:56:07 +01:00
Egor Pugin
c39b1daa6b GenericVector -> std::vector. 2021-03-03 22:22:00 +03:00
Egor Pugin
0a693a9519 Allow to serialize std vectors with classes from TFile. Implementation from GenericVector. 2021-03-03 22:21:40 +03:00
Stefan Weil
ff830775f9 Fix memory leak in DocumentCache 
It was introduced in commit 5cac52173e.

Signed-off-by: Stefan Weil <sw@weilnetz.de>
 2021-03-01 11:31:48 +01:00
Stefan Weil
339c01894e Avoid fp division by 0 (fix issue #3314) 
Signed-off-by: Stefan Weil <sw@weilnetz.de>
 2021-02-28 19:42:01 +01:00
Egor Pugin
838a754d24
Merge pull request #3313 from stweil/learning_rate 
Add new checks for floating point errors and fix a division by zero
 2021-02-27 23:20:09 +03:00
Stefan Weil
cd60728e8a Avoid float division by zero when calculating adaptive learning rate 
The following line results in a division by zero when
momentum is -1 and num_samples is even:

     learning_rate /= 1.0f - pow(momentum, num_samples);

Signed-off-by: Stefan Weil <sw@weilnetz.de>
 2021-02-27 21:08:41 +01:00
Stefan Weil
c12dde2862 Use float instead of double for learning_rate, momentum and adam_beta 
Only WeightMatrix::Update used double parameters, all other functions
already used float. So this change avoids unnecessary conversions.

Signed-off-by: Stefan Weil <sw@weilnetz.de>
 2021-02-27 21:08:41 +01:00
Stefan Weil
422452b9f4 Check for float errors when running tesseract and lstmtraining 
Some illegal floating point calculations like division by zero,
illegal value or overflow will now abort tesseract with an error
message.

For lstmtraining there is now a new parameter --debug_float to
enable the same kind of checks. It is currently disabled by default
because such errors occur and would abort the training process.
That should be fixed in the future.

If tesseract also shows floating point errors which cannot be
fixed easily, a similar parameter to enable the checks can be
added there, too.

The new code requires the function feenableexcept which is only
available with the GNU libc, so it is only used on Linux.

Signed-off-by: Stefan Weil <sw@weilnetz.de>
 2021-02-26 21:49:27 +01:00
Stefan Weil
51a214a51b Remove unused include statements for imagedata.h and document used ones 
Signed-off-by: Stefan Weil <sw@weilnetz.de>
 2021-02-26 21:42:28 +01:00
Stefan Weil
1d7a981203 Disable code for unused classes WordFeature and FloatWordFeature 
Signed-off-by: Stefan Weil <sw@weilnetz.de>
 2021-02-26 21:42:17 +01:00
Stefan Weil
5cac52173e Replace PointerVector by std::vector in class DocumentCache 
Signed-off-by: Stefan Weil <sw@weilnetz.de>
 2021-02-26 21:42:07 +01:00
Stefan Weil
387acd9881 Initialize weight matrix with 0.0 (fix issue #3229) 
Signed-off-by: Stefan Weil <sw@weilnetz.de>
 2021-02-26 18:49:39 +01:00
Egor Pugin
1ab6b0fbc6
Merge pull request #3311 from stweil/master 
Replace calls of exit function
 2021-02-26 17:43:53 +03:00
Stefan Weil
58304cbfdd Don't compile OpenCL code when OpenCL is disabled 
Signed-off-by: Stefan Weil <sw@weilnetz.de>
 2021-02-26 15:40:23 +01:00
Stefan Weil
a6946c3bf9 Replace calls of exit function 
Signed-off-by: Stefan Weil <sw@weilnetz.de>
 2021-02-26 14:22:36 +01:00
Stefan Weil
373a3527ec Format code 
Signed-off-by: Stefan Weil <sw@weilnetz.de>
 2021-02-26 14:22:09 +01:00
Stefan Weil
ea446b1eae Remove blanks at line endings 
Signed-off-by: Stefan Weil <sw@weilnetz.de>
 2021-02-26 14:05:36 +01:00
Stefan Weil
394c56ab15 Replace GenericVector by std::vector in class WERD_CHOICE 
Signed-off-by: Stefan Weil <sw@weilnetz.de>
 2021-02-23 23:14:25 +01:00
Egor Pugin
b030b03e0d
Update configure.ac 2021-02-24 01:09:44 +03:00
Egor Pugin
c877c368a1
Merge pull request #3309 from stweil/std 
Replace more STRING and GenericVector variables and other code maintenance
 2021-02-24 01:04:03 +03:00
Egor Pugin
90afdef30d
Merge pull request #3162 from xloem/android 
Specify ADD_RT for android platform, which embeds librt in libc
 2021-02-24 00:22:17 +03:00
Stefan Weil
fccecb2d23 Replace GenericVector by std::vector in class ResultIterator 
Signed-off-by: Stefan Weil <sw@weilnetz.de>
 2021-02-23 21:07:57 +01:00
Stefan Weil
2257028052 Replace GenericVector by std::vector in reject.cpp 
Signed-off-by: Stefan Weil <sw@weilnetz.de>
 2021-02-23 21:06:59 +01:00
Stefan Weil
d62f27dd8f Replace GenericVector by std::vector in stepblob.cpp 
Signed-off-by: Stefan Weil <sw@weilnetz.de>
 2021-02-23 20:47:06 +01:00
Stefan Weil
3e5b2760ab Replace GenericVector by std::vector for struct BlamerBundle 
Signed-off-by: Stefan Weil <sw@weilnetz.de>
 2021-02-23 20:34:41 +01:00
Stefan Weil
0b8e937655 Use countof to get number of array elements 
Signed-off-by: Stefan Weil <sw@weilnetz.de>
 2021-02-23 20:20:48 +01:00
Stefan Weil
7097dfd41c Replace GenericVector by std::vector for parameters 
Signed-off-by: Stefan Weil <sw@weilnetz.de>
 2021-02-23 20:20:48 +01:00
Stefan Weil
f2d2695ce9 Replace STRING and clean declarations of local variables in eval_word_spacing 
Signed-off-by: Stefan Weil <sw@weilnetz.de>
 2021-02-23 20:20:48 +01:00