Dn(a 30.07.2010 15:04, patrickq wrote / napísal(a):
> This what I did:
>
> 1. Created a text file called eng.user-words, containing:
> Chest
> Chestnut
> Floor
> Vice
>
> 2. Placed the file in the tessdata folder (next to eng.traineddata)
>
> 3. Ran recognition on an image returning "Chesf" instead of "Chest"
> and "Fioor" instead of "Floor". Both mistaken "f" and "i" look quite
> right visually so I can only assume their confidence level would be
> low (but I didn't check).
>
> No effect whatsoever - zip. I can only assume that a variable must be
> set or a function needs to be called to turn this on (even though
> there is no mention of needing to set anything in the documentation)
> or (most likely) I just don't understand how this works and the
> dictionary kicks in only on the day or the summer solstice and when
> there is a full moon or something.
>
I played with strace & grep and I found out that user dictionary is not
used (opened) in standard installation (svn revision 447).
When I set up variable "global_user_words_suffix" to "user-words" (or
something else you like ;-) ) tesseract opened user dictionary file.
global_user_words_suffix can be found in 2 files:
dict/dict.h: extern STRING_VAR_H(global_user_words_suffix, "user-words",
"A list of user-provided words.");
dict/permute.cpp:STRING_VAR(global_user_words_suffix, "", "A list of
user-provided words.");
I believe problem is in dict/permute.cpp that define this variable as
empty string.
Zd.
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