JM56 - 2011-02-10

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:
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 " - 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/