获取文本位置的Tesseract OCR在iphone(Get the text position

采用正方体我有提取iPhone.Now想在XML文本位置沿提取文本的文本。 我USET GetHocrText其检索HTML文本。

对于如： -

<span class='ocr_word' id='word_3_28' title="bbox 55 226 123 243">
<span class='ocrx_word' id='xword_3_28' title="x_wconf -5">Beverage</span>
</span>

是否有任何其他的方式来提取XML格式的文本中的Tesseract OCR？

谢谢进阶

斯里韦德亚

Answer 1:

更好的方式来做到这一点是使用ResultIterator; 你可以用正方体:: RIL_BLOCK，正方体:: RIL_PARA，正方体:: RIL_TEXTLINE，正方体:: RIL_WORD，或正方体:: RIL_SYMBOL

从https://code.google.com/p/tesseract-ocr/wiki/APIExample ：

tesseract::TessBaseAPI api;
// tesseract.Init here
api.SetVariable("save_blob_choices", "T");
// tesseract.SetImage/tesseract.SetRectangle here
api.Recognize(NULL);

tesseract::ResultIterator* ri = api.GetIterator();
tesseract::PageIteratorLevel level = tesseract::RIL_WORD;
if (ri) {
  do {
    const char* word = ri->GetUTF8Text(level);
    float conf = ri->Confidence(level);
    int x1, y1, x2, y2;
    ri->BoundingBox(level, &x1, &y1, &x2, &y2);
    printf("word: '%s';  \tconf: %.2f; BoundingBox: %d,%d,%d,%d;\n",
           word, conf, x1, y1, x2, y2);
    delete[] word;
  } while (ri->Next(level));
}

Answer 2:

这不是XML，但这是让每个字符的位置的一种方法：

tesseract::TessBaseAPI tesseract;
// tesseract.Init here
tesseract.SetVariable("save_blob_choices", "T"); // for character-level confidence
// tesseract.SetImage/tesseract.SetRectangle here
char *results_as_text = tesseract.GetBoxText(0);  // characters without spaces/newlines artificially embedded
std::istringstream results_as_stream(results_as_text);
std::string result;
char letter;
int x1, y1, x2, y2;
while (std::getline(results_as_stream,result)) {
    std::istringstream result_stream(result);
    result_stream >> letter;
    result_stream >> x1;
    result_stream >> y1;
    result_stream >> x2;
    result_stream >> y2;
    std::cout << letter << " ((" << x1 << "," << y1 << "),(" << x2 << "," << y2 << "))" << std::endl;
}

文章来源: Get the text position in tesseract Ocr in iphone