Thanks to pyocr <https://github.com/jflesch/pyocr/blob/master/src/pyocr/libtesseract/tesseract_raw.py> I figured it out!
# ... /snip # https://github.com/jflesch/pyocr/blob/master/src/pyocr/libtesseract/tesseract_raw.py class OSResults(Structure): _fields_ = [ ('orientations', c_float * 4), ('scripts_na', c_float * 4 * (116 + 1 + 2 + 1)), ('unicharset', c_void_p), ('best_orientation_id', c_int), ('best_script_id', c_int), ('best_sconfidence', c_float), ('best_oconfidence', c_float), ('padding', c_char_p * 512), ] # ... /snip def create_tess_api(prefix=TESSDATA_PREFIX, lang='eng'): # ... /snip tesseract.TessBaseAPIDetectOS.argtypes = [base_api, POINTER(OSResults)] tesseract.TessBaseAPIDetectOS.restype = c_bool # ... /snip def get_orientation(tesseract, leptonica, api, path, mode=0): tesseract.TessBaseAPISetPageSegMode(api, mode) pix = leptonica.pixRead(path) tesseract.TessBaseAPISetImage2(api, pix) osr = OSResults() it = tesseract.TessBaseAPIDetectOS(api, byref(osr)) if it and osr: orientation, direction, line_order = c_int(), c_int(), c_int() skew = c_float() tesseract.TessPageIteratorOrientation( it, byref(orientation), byref(direction), byref(line_order), byref(skew)) print('%s: %s' % (path, osr.best_orientation_id)) print('confidence: %s' % osr.best_oconfidence) On Friday, May 20, 2016 at 7:18:09 PM UTC+3, Reuben Cummings wrote: > > I found some helpful code on the forum > <https://groups.google.com/d/msg/tesseract-ocr/g5aE_OvgyTU/4KRPdBgj3vAJ>: > > OSResults *orientationStruct = new OSResults(); > bool gotOrientation = myTess->DetectOS(orientationStruct); > int bestOrientation = -1; > float bestOrientationScore = 0; > > if ((gotOrientation) && (orientationStruct->orientations != NULL)) { > for (int i=0; i<4; i++) { > if (orientationStruct->orientations[i] > bestOrientationScore) { > bestOrientation = i; > bestOrientationScore = orientationStruct->orientations[i]; > } > } > } > > // This is the result we were asked for > results.textOrientation = bestOrientation; > > > But unfortunately, OSResults > <https://zdenop.github.io/tesseract-doc/struct_o_s_results.html> isn't > implemented in the c-api. > <https://fossies.org/dox/tesseract-3.04.01/capi_8cpp.html#aae7d8f59b4757edde9afbdf64e649fb9> > > Any suggestions? > > > > On Friday, May 20, 2016 at 9:32:36 AM UTC+3, Reuben Cummings wrote: >> >> If i try to run the script with psm mode=0 (like the executable) i dont >> get any results either. Further research has led me to the DetectOS >> function which seems useful. > > -- 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/8bf265dc-358b-4477-a5bb-02ab6059492b%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
