图像中的文字是否为粗体？

Question

我一直在用Tesseract OCR试验拉特利。我可以在图像中找到字符，但是在图像中只能找到粗体字符时遇到了麻烦（知道文档图像中的字符是否为粗体）。我在Tesseract API的另一个问题（Can I use OCR to detect font style (bold, italic)?）中看到了函数WordFontAttributes（），但我无法在Python中实现它。

Answer 1

在安装tesseract 3.05之前（第4版不支持WordFontAttributes）

from tesserocr import PyTessBaseAPI, RIL, iterate_level


def get_words_info(image_path, tessdata_path):
    """
    get path to image and path to tessdata and return dict with info about each word
    """
    # api = PyTessBaseAPI(path=tessdata_path)
    with PyTessBaseAPI(path=tessdata_path) as api:
        api.SetImageFile(image_path)
        api.Recognize()
        iter = api.GetIterator()
        level = RIL.WORD

        result = []

        for r in iterate_level(iter, level):
            element = r.GetUTF8Text(level)
            word_attributes = r.WordFontAttributes()
            base_line = r.BoundingBox(level)

            if element:
                word_attributes['word'] = element
                word_attributes['position'] = base_line

            result.append(word_attributes)

        return result