Training Won't Accept 'Slashed' Zero

[jmar...@myway.com]

[Avatar]
2011-02-10 14:34:32 EST
The log file below is the result of training with an image containing
"slashed" zeros (zero with a diagonal line in it to differentiate it
from Upper-case O.)

If I edit out the diagonal, there are no errors in tesseract.log, but
interpretation of zero and O are unreliable, even with a line in
eng.unicharambigs.

How can I get tesseract to accept the slashed zero? So far I have
converted the image to black text on white background and scaled up to
approx. 300 dpi.

----------------- tesseract.log
-------------------------------------
Found fonts: ['IA']
Tesseract Open Source OCR Engine with Leptonica
APPLY_BOXES: boxfile 1/51/0 ((2295,326),(2323,370)): FAILURE! box
overlaps no bl obs or blobs in multiple rows
APPLY_BOXES: boxfile 3/51/0 ((2289,137),(2317,181)): FAILURE! box
overlaps no bl obs or blobs in multiple rows
APPLY_BOXES: More than one block??
APPLY_BOXES: FATALITY - 0 labelled samples of "0 [30 ]" - target is
2:
APPLY_BOXES: Boxes read from boxfile: 226
Initially labelled blobs: 224 in 4 rows
Box failures detected: 2
Duped blobs for rebalance: 0
"0" has fewest samples: 0
Total unlabelled words: 0
Final labelled words: 224
Generating training data TRAINING ... Font name = IA
Generated training data for 224 blobs


See tif image at: http://www.flickr.com/photos/59351419@N05/5434403800/

[calg...@gmail.com]

Hello friend, have you got a solution for this issue?

I need to process an IBM 3270 terminal screen but I got no success with tesseract training for slashed zeros.

Thanks in advance

Carlos

[zdenko podobny]

try to set edges_use_new_outline_complexity to  True (see box.train2 in attached test case).

Zdenko

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[Carlos Garcia]

Ok, thanks for your response.

I'll check this than I back to you.

Carlos

Carlos Garcia

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2013/9/14 zdenko podobny <zde...@gmail.com>

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