So I've been trying to use tesseract ocr, (specifically tess-two) for an
android project to scan some symbols.
Everything works fine but sometimes the recognized String is returned as
null. One of the solutions I found was to set the variable
save_blob_choices
to true in order to have tesseract save alternatives for recognition.
But I don't know if it indeed is supposed to do that. Where does it save
the alternatives? How do I access them?
Of course if you have any other solution apart from using this variable,
please tell me.
Here is my code:
TessBaseAPI baseApi = new TessBaseAPI(); baseApi.setDebug(true);
baseApi.init(MainActivity.DATA_PATH, MainActivity.lang);
baseApi.setPageSegMode(TessBaseAPI.PageSegMode.PSM_SINGLE_CHAR);
baseApi.setVariable("tessedit_char_whitelist","abcdefghijklmnopqrst");
baseApi.setVariable("save_blob_choices", "T"); baseApi.setImage(mainBitmap);
publishProgress(80); mainBitmap.recycle(); mainBitmap = null; // Iterate
through the results. ResultIterator iterator = baseApi.getResultIterator();
String lastUTF8Text; float lastConfidence; iterator.begin(); do { lastUTF8Text
= iterator.getUTF8Text(TessBaseAPI.PageIteratorLevel.RIL_SYMBOL);
lastConfidence = iterator.confidence(TessBaseAPI.PageIteratorLevel.RIL_SYMBOL);
Log.i("string, intConfidence",lastUTF8Text+", "+lastConfidence); } while
(iterator.next(TessBaseAPI.PageIteratorLevel.RIL_SYMBOL)); baseApi.end();
Also as an extra question, is
base.setDebug(true)
supposed to work? Because it doesn't seem to do anything.
--
You received this message because you are subscribed to the Google Groups
"tesseract-ocr" group.
To unsubscribe from this group and stop receiving emails from it, send an email
to [email protected].
To post to this group, send email to [email protected].
Visit this group at https://groups.google.com/group/tesseract-ocr.
To view this discussion on the web visit
https://groups.google.com/d/msgid/tesseract-ocr/831e26a9-8f56-47e8-9cdc-af2f169a5184%40googlegroups.com.
For more options, visit https://groups.google.com/d/optout.
