| # Usage | |
| ## 模型文件自动下载 | |
| 首次使用 **Pix2Text** 时,系统会**自动下载**所需的开源模型,并存于 `~/.pix2text` 目录(Windows下默认路径为 `C:\Users\<username>\AppData\Roaming\pix2text`)。 | |
| CnOCR 和 CnSTD 中的模型分别存于 `~/.cnocr` 和 `~/.cnstd` 中(Windows 下默认路径为 `C:\Users\<username>\AppData\Roaming\cnocr` 和 `C:\Users\<username>\AppData\Roaming\cnstd`)。 | |
| 下载过程请耐心等待,无法科学上网时系统会自动尝试其他可用站点进行下载,所以可能需要等待较长时间。 | |
| 对于没有网络连接的机器,可以先把模型下载到其他机器上,然后拷贝到对应目录。 | |
| 如果系统无法自动成功下载模型文件,则需要手动下载模型文件,可以参考 [huggingface.co/breezedeus](https://huggingface.co/breezedeus) ([国内镜像](https://hf-mirror.com/breezedeus))自己手动下载。 | |
| 具体说明见 [模型下载](models.md)。 | |
| ## 初始化 | |
| ### 方法一 | |
| 类 [Pix2Text](pix2text/pix_to_text.md) 是识别主类,包含了多个识别函数识别不同类型的 **图片** 或 **PDF文件** 中的内容。类 `Pix2Text` 的初始化函数如下: | |
| ```python | |
| class Pix2Text(object): | |
| def __init__( | |
| self, | |
| *, | |
| layout_parser: Optional[LayoutParser] = None, | |
| text_formula_ocr: Optional[TextFormulaOCR] = None, | |
| table_ocr: Optional[TableOCR] = None, | |
| **kwargs, | |
| ): | |
| """ | |
| Initialize the Pix2Text object. | |
| Args: | |
| layout_parser (LayoutParser): The layout parser object; default value is `None`, which means to create a default one | |
| text_formula_ocr (TextFormulaOCR): The text and formula OCR object; default value is `None`, which means to create a default one | |
| table_ocr (TableOCR): The table OCR object; default value is `None`, which means not to recognize tables | |
| **kwargs (dict): Other arguments, currently not used | |
| """ | |
| ``` | |
| 其中的几个参数含义如下: | |
| * `layout_parser`:版面分析模型对象,默认值为 `None`,表示使用默认的版面分析模型; | |
| * `text_formula_ocr`:文字与公式识别模型对象,默认值为 `None`,表示使用默认的文字与公式识别模型; | |
| * `table_ocr`:表格识别模型对象,默认值为 `None`,表示不识别表格; | |
| * `**kwargs`:其他参数,目前未使用。 | |
| 每个参数都有默认取值,所以可以不传入任何参数值进行初始化:`p2t = Pix2Text()`。但请注意,如果不传入任何参数值,那么只会导入默认的版面分析模型和文字与公式识别模型,而**不会导入表格识别模型**。 | |
| 初始化 Pix2Text 实例的更好的方法是使用以下的函数。 | |
| ### 方法二 | |
| 可以通过指定配置信息来初始化 `Pix2Text` 类的实例: | |
| ```python | |
| @classmethod | |
| def from_config( | |
| cls, | |
| total_configs: Optional[dict] = None, | |
| enable_formula: bool = True, | |
| enable_table: bool = True, | |
| device: str = None, | |
| **kwargs, | |
| ): | |
| """ | |
| Create a Pix2Text object from the configuration. | |
| Args: | |
| total_configs (dict): The total configuration; default value is `None`, which means to use the default configuration. | |
| If not None, it should contain the following keys: | |
| * `layout`: The layout parser configuration | |
| * `text_formula`: The TextFormulaOCR configuration | |
| * `table`: The table OCR configuration | |
| enable_formula (bool): Whether to enable formula recognition; default value is `True` | |
| enable_table (bool): Whether to enable table recognition; default value is `True` | |
| device (str): The device to run the model; optional values are 'cpu', 'gpu' or 'cuda'; | |
| default value is `None`, which means to select the device automatically | |
| **kwargs (dict): Other arguments | |
| Returns: a Pix2Text object | |
| """ | |
| ``` | |
| 其中的几个参数含义如下: | |
| * `total_configs`:总配置,包含以下几个键值: | |
| - `layout`:版面分析模型的配置; | |
| - `text_formula`:文字与公式识别模型的配置; | |
| - `table`:表格识别模型的配置; | |
| 默认值为 `None`,表示使用默认配置。 | |
| * `enable_formula`:是否启用公式识别,默认值为 `True`; | |
| * `enable_table`:是否启用表格识别,默认值为 `True`; | |
| * `device`:运行模型的设备,可选值为 `'cpu'`, `'gpu'` 或 `'cuda'`,默认值为 `None`,表示自动选择设备; | |
| * `**kwargs`:其他参数,目前未使用。 | |
| 这个函数的返回值是一个 `Pix2Text` 类的实例,可以直接使用这个实例进行识别。 | |
| 推荐使用此函数初始化 Pix2Text 的实例,如:`p2t = Pix2Text.from_config()`。 | |
| 一个包含配置信息的示例如下: | |
| ```python | |
| import os | |
| from pix2text import Pix2Text | |
| text_formula_config = dict( | |
| languages=('en', 'ch_sim'), # 设置识别的语言 | |
| mfd=dict( # 声明 MFD 的初始化参数 | |
| model_path=os.path.expanduser( | |
| '~/.pix2text/1.1/mfd-onnx/mfd-v20240618.onnx' | |
| ), # 注:修改成你的模型文件所存储的路径 | |
| ), | |
| formula=dict( | |
| model_name='mfr-pro', | |
| model_backend='onnx', | |
| model_dir=os.path.expanduser( | |
| '~/.pix2text/1.1/mfr-pro-onnx' | |
| ), # 注:修改成你的模型文件所存储的路径 | |
| ), | |
| text=dict( | |
| rec_model_name='doc-densenet_lite_666-gru_large', | |
| rec_model_backend='onnx', | |
| rec_model_fp=os.path.expanduser( | |
| '~/.cnocr/2.3/doc-densenet_lite_666-gru_large/cnocr-v2.3-doc-densenet_lite_666-gru_large-epoch=005-ft-model.onnx' | |
| # noqa | |
| ), # 注:修改成你的模型文件所存储的路径 | |
| ), | |
| ) | |
| total_config = { | |
| 'layout': {'scores_thresh': 0.45}, | |
| 'text_formula': text_formula_config, | |
| } | |
| p2t = Pix2Text.from_config(total_configs=total_config) | |
| ``` | |
| 使用 VLM API 做文字和公式识别的示例如下: | |
| ```python | |
| import os | |
| from pix2text import Pix2Text | |
| model_name=os.getenv("GEMINI_MODEL") # "gemini/gemini-2.0-flash-lite" | |
| api_key=os.getenv("GEMINI_API_KEY") # "<your-api-key>" | |
| total_config = { | |
| 'layout': None, | |
| 'text_formula': { | |
| "model_type": "VlmTextFormulaOCR", # 指定类名 | |
| "model_name": model_name, | |
| "api_key": api_key, | |
| }, | |
| "table": { | |
| "model_type": "VlmTableOCR", # 指定类名 | |
| "model_name": model_name, | |
| "api_key": api_key, | |
| }, | |
| } | |
| p2t = Pix2Text.from_config(total_configs=total_config) | |
| ``` | |
| `model_name` 和 `api_key` 的取值,具体可参考 [LiteLLM 文档](https://docs.litellm.ai/docs/)。 | |
| 更多初始化的示例请参见 [tests/test_pix2text.py](https://github.com/breezedeus/Pix2Text/blob/main/tests/test_pix2text.py)。 | |
| ## 各种识别接口 | |
| 类 `Pix2Text` 提供了不同的识别函数来识别不同类似的图片或者 PDF 文件内容,下面分别说明。 | |
| ### 1. 函数 `.recognize_pdf()` | |
| 此函数用于识别一整个 PDF 文件中的内容。**PDF 文件的内容可以只包含图片而无文字内容**, | |
| 如示例文件 [examples/test-doc.pdf](examples/test-doc.pdf)。 | |
| 识别时,可以指定识别的页数,也可以指定识别的 PDF 文件编号。 | |
| 函数定义如下: | |
| ```python | |
| def recognize_pdf( | |
| self, | |
| pdf_fp: Union[str, Path], | |
| pdf_number: int = 0, | |
| pdf_id: Optional[str] = None, | |
| page_numbers: Optional[List[int]] = None, | |
| **kwargs, | |
| ) -> Document: | |
| """ | |
| recognize a pdf file | |
| Args: | |
| pdf_fp (Union[str, Path]): pdf file path | |
| pdf_number (int): pdf number | |
| pdf_id (str): pdf id | |
| page_numbers (List[int]): page numbers to recognize; default is `None`, which means to recognize all pages | |
| kwargs (dict): Optional keyword arguments. The same as `recognize_page` | |
| Returns: a Document object. Use `doc.to_markdown('output-dir')` to get the markdown output of the recognized document. | |
| """ | |
| ``` | |
| **函数说明**: | |
| * 输入参数 `pdf_fp`:PDF 文件的路径; | |
| * 输入参数 `pdf_number`:PDF 文件的编号,默认值为 `0`; | |
| * 输入参数 `pdf_id`:PDF 文件的 ID,默认值为 `None`; | |
| * 输入参数 `page_numbers`:需要识别的页码列表(页码从 0 开始计数,如 `[0, 1]` 表示只识别文件的第 1、2 页内容),默认值为 `None`,表示识别所有页; | |
| * 输入参数 `**kwargs`:其他参数,具体说明参考下面的函数 `recognize_page()`。 | |
| **返回值**:返回一个 `Document` 对象,可以使用 `doc.to_markdown('output-dir')` 来获取识别结果的 markdown 输出。 | |
| **调用示例**: | |
| ```python | |
| from pix2text import Pix2Text | |
| img_fp = 'examples/test-doc.pdf' | |
| p2t = Pix2Text.from_config() | |
| out_md = p2t.recognize_pdf( | |
| img_fp, | |
| page_numbers=[0, 1], | |
| table_as_image=True, | |
| save_debug_res=f'./output-debug', | |
| ) | |
| out_md.to_markdown('output-pdf-md') | |
| ``` | |
| ### 2. 函数 `.recognize_page()` | |
| 此函数用于识别一张包含复杂排版的页面图片中的内容。图片可以包含多列、图片、表格等内容,如示例图片 [examples/page2.png](examples/page2.png)。 | |
| 函数定义如下: | |
| ```python | |
| def recognize_page( | |
| self, | |
| img: Union[str, Path, Image.Image], | |
| page_number: int = 0, | |
| page_id: Optional[str] = None, | |
| **kwargs, | |
| ) -> Page: | |
| """ | |
| Analyze the layout of the image, and then recognize the information contained in each section. | |
| Args: | |
| img (str or Image.Image): an image path, or `Image.Image` loaded by `Image.open()` | |
| page_number (str): page number; default value is `0` | |
| page_id (str): page id; default value is `None`, which means to use the `str(page_number)` | |
| kwargs (): | |
| * resized_shape (int): Resize the image width to this size for processing; default value is `768` | |
| * mfr_batch_size (int): batch size for MFR; When running on GPU, this value is suggested to be set to greater than 1; default value is `1` | |
| * embed_sep (tuple): Prefix and suffix for embedding latex; only effective when `return_text` is `True`; default value is `(' $', '$ ')` | |
| * isolated_sep (tuple): Prefix and suffix for isolated latex; only effective when `return_text` is `True`; default value is two-dollar signs | |
| * line_sep (str): The separator between lines of text; only effective when `return_text` is `True`; default value is a line break | |
| * auto_line_break (bool): Automatically line break the recognized text; only effective when `return_text` is `True`; default value is `True` | |
| * det_text_bbox_max_width_expand_ratio (float): Expand the width of the detected text bbox. This value represents the maximum expansion ratio above and below relative to the original bbox height; default value is `0.3` | |
| * det_text_bbox_max_height_expand_ratio (float): Expand the height of the detected text bbox. This value represents the maximum expansion ratio above and below relative to the original bbox height; default value is `0.2` | |
| * embed_ratio_threshold (float): The overlap threshold for embed formulas and text lines; default value is `0.6`. | |
| When the overlap between an embed formula and a text line is greater than or equal to this threshold, | |
| the embed formula and the text line are considered to be on the same line; | |
| otherwise, they are considered to be on different lines. | |
| * table_as_image (bool): If `True`, the table will be recognized as an image (don't parse the table content as text) ; default value is `False` | |
| * title_contain_formula (bool): If `True`, the title of the page will be recognized as a mixed image (text and formula). If `False`, it will be recognized as a text; default value is `False` | |
| * text_contain_formula (bool): If `True`, the text of the page will be recognized as a mixed image (text and formula). If `False`, it will be recognized as a text; default value is `True` | |
| * formula_rec_kwargs (dict): generation arguments passed to formula recognizer `latex_ocr`; default value is `{}` | |
| * save_debug_res (str): if `save_debug_res` is set, the directory to save the debug results; default value is `None`, which means not to save | |
| Returns: a Page object. Use `page.to_markdown('output-dir')` to get the markdown output of the recognized page. | |
| """ | |
| ``` | |
| **函数说明**: | |
| * 输入参数 `img`:图片路径或者 `Image.Image` 对象; | |
| * 输入参数 `page_number`:页码,默认值为 `0`; | |
| * 输入参数 `page_id`:页码 ID,默认值为 `None`,此时会使用 `str(page_number)` 作为其取值; | |
| * kwargs:其他参数,具体说明如下: | |
| - `resized_shape`:调整图片的宽度为此大小以进行处理,默认值为 `768`; | |
| - `mfr_batch_size`:MFR 预测时使用的批大小;在 GPU 上运行时,建议将此值设置为大于 `1`;默认值为 `1`; | |
| - `embed_sep`:嵌入 LaTeX 的前缀和后缀;仅在 `return_text` 为 `True` 时有效;默认值为 `(' $', '$ ')`; | |
| - `isolated_sep`:孤立 LaTeX 的前缀和后缀;仅在 `return_text` 为 `True` 时有效;默认值为两个美元符号; | |
| - `line_sep`:文本行之间的分隔符;仅在 `return_text` 为 `True` 时有效;默认值为换行符; | |
| - `auto_line_break`:自动换行识别的文本;仅在 `return_text` 为 `True` 时有效;默认值为 `True`; | |
| - `det_text_bbox_max_width_expand_ratio`:扩展检测文本框的宽度。此值表示相对于原始框高度的最大扩展比率;默认值为 `0.3`; | |
| - `det_text_bbox_max_height_expand_ratio`:扩展检测文本框的高度。此值表示相对于原始框高度的最大扩展比率;默认值为 `0.2`; | |
| - `embed_ratio_threshold`:嵌入公式和文本行之间的重叠阈值;默认值为 `0.6`。当嵌入公式和文本行之间的重叠大于或等于此阈值时,认为嵌入公式和文本行在同一行;否则,认为它们在不同行 | |
| - `table_as_image`:如果为 `True`,则将表格识别为图像(不将表格内容解析为文本);默认值为 `False` | |
| - `title_contain_formula`:如果为 `True`,则将页面标题作为为混合图像(文本和公式)进行识别。如果为 `False`,则将其作为文本图片进行识别(不识别公式);默认值为 `False` | |
| - `text_contain_formula`:如果为 `True`,则将页面文本作为混合图像(文本和公式)进行识别。如果为 `False`,则将其作为文本进行识别(不识别公式);默认值为 `True` | |
| - `formula_rec_kwargs`:传递给公式识别器 `latex_ocr` 的生成参数;默认值为 `{}` | |
| - `save_debug_res`:如果设置了 `save_debug_res`,则把各种中间的解析结果存入此目录以便于调试;默认值为 `None`,表示不保存 | |
| **返回值**:返回一个 `Page` 对象,可以使用 `page.to_markdown('output-dir')` 来获取识别结果的 markdown 输出。 | |
| **调用示例**: | |
| ```python | |
| from pix2text import Pix2Text | |
| img_fp = 'examples/page2.png' | |
| p2t = Pix2Text.from_config() | |
| out_page = p2t.recognize_page( | |
| img_fp, | |
| title_contain_formula=False, | |
| text_contain_formula=False, | |
| save_debug_res=f'./output-debug', | |
| ) | |
| out_page.to_markdown('output-page-md') | |
| ``` | |
| ### 3. 函数 `.recognize_text_formula()` | |
| 此函数用于识别一张包含文字和公式的图片(如段落截图)中的内容,如示例图片 [examples/mixed.jpg](examples/mixed.jpg)。 | |
| 函数定义如下: | |
| ```python | |
| def recognize_text_formula( | |
| self, img: Union[str, Path, Image.Image], return_text: bool = True, **kwargs, | |
| ) -> Union[str, List[str], List[Any], List[List[Any]]]: | |
| """ | |
| Analyze the layout of the image, and then recognize the information contained in each section. | |
| Args: | |
| img (str or Image.Image): an image path, or `Image.Image` loaded by `Image.open()` | |
| return_text (bool): Whether to return the recognized text; default value is `True` | |
| kwargs (): | |
| * resized_shape (int): Resize the image width to this size for processing; default value is `768` | |
| * save_analysis_res (str): Save the mfd result image in this file; default is `None`, which means not to save | |
| * mfr_batch_size (int): batch size for MFR; When running on GPU, this value is suggested to be set to greater than 1; default value is `1` | |
| * embed_sep (tuple): Prefix and suffix for embedding latex; only effective when `return_text` is `True`; default value is `(' $', '$ ')` | |
| * isolated_sep (tuple): Prefix and suffix for isolated latex; only effective when `return_text` is `True`; default value is two-dollar signs | |
| * line_sep (str): The separator between lines of text; only effective when `return_text` is `True`; default value is a line break | |
| * auto_line_break (bool): Automatically line break the recognized text; only effective when `return_text` is `True`; default value is `True` | |
| * det_text_bbox_max_width_expand_ratio (float): Expand the width of the detected text bbox. This value represents the maximum expansion ratio above and below relative to the original bbox height; default value is `0.3` | |
| * det_text_bbox_max_height_expand_ratio (float): Expand the height of the detected text bbox. This value represents the maximum expansion ratio above and below relative to the original bbox height; default value is `0.2` | |
| * embed_ratio_threshold (float): The overlap threshold for embed formulas and text lines; default value is `0.6`. | |
| When the overlap between an embed formula and a text line is greater than or equal to this threshold, | |
| the embed formula and the text line are considered to be on the same line; | |
| otherwise, they are considered to be on different lines. | |
| * table_as_image (bool): If `True`, the table will be recognized as an image; default value is `False` | |
| * formula_rec_kwargs (dict): generation arguments passed to formula recognizer `latex_ocr`; default value is `{}` | |
| Returns: a str when `return_text` is `True`; or a list of ordered (top to bottom, left to right) dicts when `return_text` is `False`, | |
| with each dict representing one detected box, containing keys: | |
| * `type`: The category of the image; Optional: 'text', 'isolated', 'embedding' | |
| * `text`: The recognized text or Latex formula | |
| * `score`: The confidence score [0, 1]; the higher, the more confident | |
| * `position`: Position information of the block, `np.ndarray`, with shape of [4, 2] | |
| * `line_number`: The line number of the box (first line `line_number==0`), boxes with the same value indicate they are on the same line | |
| """ | |
| ``` | |
| **函数说明**: | |
| * 输入参数 `img`:图片路径或者 `Image.Image` 对象; | |
| * 输入参数 `return_text`:是否返回纯文本;取值为 `False` 时返回带有结构化信息的 list;默认值为 `True`; | |
| * 输入参数 `kwargs`:其他参数,具体说明如下: | |
| - `resized_shape`:调整图片的宽度为此大小以进行处理,默认值为 `768`; | |
| - `save_analysis_res`:保存 MFD 解析结果图像的文件名;默认值为 `None`,表示不保存; | |
| - `mfr_batch_size`:MFR 预测时使用的批大小;在 GPU 上运行时,建议将此值设置为大于 `1`;默认值为 `1`; | |
| - `embed_sep`:嵌入 LaTeX 的前缀和后缀;仅在 `return_text` 为 `True` 时有效;默认值为 `(' $', '$ ')`; | |
| - `isolated_sep`:孤立 LaTeX 的前缀和后缀;仅在 `return_text` 为 `True` 时有效;默认值为两个美元符号; | |
| - `line_sep`:文本行之间的分隔符;仅在 `return_text` 为 `True` 时有效;默认值为换行符; | |
| - `auto_line_break`:自动换行识别的文本;仅在 `return_text` 为 `True` 时有效;默认值为 `True`; | |
| - `det_text_bbox_max_width_expand_ratio`:扩展检测文本框的宽度。此值表示相对于原始框高度的最大扩展比率;默认值为 `0.3`; | |
| - `det_text_bbox_max_height_expand_ratio`:扩展检测文本框的高度。此值表示相对于原始框高度的最大扩展比率;默认值为 `0.2`; | |
| - `embed_ratio_threshold`:嵌入公式和文本行之间的重叠阈值;默认值为 `0.6`。当嵌入公式和文本行之间的重叠大于或等于此阈值时,认为嵌入公式和文本行在同一行;否则,认 | |
| - `table_as_image`:如果为 `True`,则将表格识别为图像;默认值为 `False` | |
| - `formula_rec_kwargs`:传递给公式识别器 `latex_ocr` 的生成参数;默认值为 `{}` | |
| **返回值**:当 `return_text` 为 `True` 时,返回一个字符串;当 `return_text` 为 `False` 时,返回一个有序的(从上到下,从左到右)字典列表,每个字典表示一个检测框,包含以下键值: | |
| - `type`:图像的类别;可选值:'text'、'isolated'、'embedding' | |
| - `text`:识别的文本或 LaTeX 公式 | |
| - `score`:置信度分数 [0, 1];分数越高,置信度越高 | |
| - `position`:块的位置信息,`np.ndarray`,形状为 `[4, 2]` | |
| - `line_number`:框的行号(第一行 `line_number==0`),具有相同值的框表示它们在同一行 | |
| **调用示例**: | |
| ```python | |
| from pix2text import Pix2Text | |
| img_fp = 'examples/mixed.jpg' | |
| p2t = Pix2Text.from_config() | |
| out = p2t.recognize_text_formula( | |
| img_fp, | |
| save_analysis_res=f'./output-debug', | |
| ) | |
| ``` | |
| ### 4. 函数 `.recognize_formula()` | |
| 此函数用于识别一张纯公式的图片中的内容,如示例图片 [examples/formula2.png](examples/formula2.png)。 | |
| 函数定义如下: | |
| ```python | |
| def recognize_formula( | |
| self, | |
| imgs: Union[str, Path, Image.Image, List[str], List[Path], List[Image.Image]], | |
| batch_size: int = 1, | |
| return_text: bool = True, | |
| rec_config: Optional[dict] = None, | |
| **kwargs, | |
| ) -> Union[str, List[str], Dict[str, Any], List[Dict[str, Any]]]: | |
| """ | |
| Recognize pure Math Formula images to LaTeX Expressions | |
| Args: | |
| imgs (Union[str, Path, Image.Image, List[str], List[Path], List[Image.Image]): The image or list of images | |
| batch_size (int): The batch size | |
| return_text (bool): Whether to return only the recognized text; default value is `True` | |
| rec_config (Optional[dict]): The config for recognition | |
| **kwargs (): Special model parameters. Not used for now | |
| Returns: The LaTeX Expression or list of LaTeX Expressions; | |
| str or List[str] when `return_text` is True; | |
| Dict[str, Any] or List[Dict[str, Any]] when `return_text` is False, with the following keys: | |
| * `text`: The recognized LaTeX text | |
| * `score`: The confidence score [0, 1]; the higher, the more confident | |
| """ | |
| ``` | |
| **函数说明**: | |
| * 输入参数 `imgs`:图片路径或者 `Image.Image` 对象,或者图片路径或者 `Image.Image` 对象的列表; | |
| * 输入参数 `batch_size`:批大小,默认值为 `1`; | |
| * 输入参数 `return_text`:是否返回纯文本;取值为 `False` 时返回带有结构化信息的 list;默认值为 `True`; | |
| * 输入参数 `rec_config`:识别配置,可选值; | |
| * 输入参数 `kwargs`:其他参数,目前未使用。 | |
| **返回值**:当 `return_text` 为 `True` 时,返回一个字符串;当 `return_text` 为 `False` 时,返回一个有序的(从上到下,从左到右)字典列表,每个字典表示一个检测框,包含以下键值: | |
| - `text`:识别的 LaTeX 文本 | |
| - `score`:置信度分数 [0, 1];分数越高,置信度越高 | |
| **调用示例**: | |
| ```python | |
| from pix2text import Pix2Text | |
| img_fp = 'examples/formula2.png' | |
| p2t = Pix2Text.from_config() | |
| out = p2t.recognize_formula( | |
| img_fp, | |
| save_analysis_res=f'./output-debug', | |
| ) | |
| ``` | |
| ### 5. 函数 `.recognize_text()` | |
| 此函数用于识别一张纯文字的图片中的内容,如示例图片 [examples/general.jpg](examples/general.jpg)。 | |
| 函数定义如下: | |
| ```python | |
| def recognize_text( | |
| self, | |
| imgs: Union[str, Path, Image.Image, List[str], List[Path], List[Image.Image]], | |
| return_text: bool = True, | |
| rec_config: Optional[dict] = None, | |
| **kwargs, | |
| ) -> Union[str, List[str], List[Any], List[List[Any]]]: | |
| """ | |
| Recognize a pure Text Image. | |
| Args: | |
| imgs (Union[str, Path, Image.Image], List[str], List[Path], List[Image.Image]): The image or list of images | |
| return_text (bool): Whether to return only the recognized text; default value is `True` | |
| rec_config (Optional[dict]): The config for recognition | |
| kwargs (): Other parameters for `text_ocr.ocr()` | |
| Returns: Text str or list of text strs when `return_text` is True; | |
| `List[Any]` or `List[List[Any]]` when `return_text` is False, with the same length as `imgs` and the following keys: | |
| * `position`: Position information of the block, `np.ndarray`, with a shape of [4, 2] | |
| * `text`: The recognized text | |
| * `score`: The confidence score [0, 1]; the higher, the more confident | |
| """ | |
| ``` | |
| **函数说明**: | |
| * 输入参数 `imgs`:图片路径或者 `Image.Image` 对象,或者图片路径或者 `Image.Image` 对象的列表; | |
| * 输入参数 `return_text`:是否返回纯文本;取值为 `False` 时返回带有结构化信息的 list;默认值为 `True`; | |
| * 输入参数 `rec_config`:识别配置,可选值; | |
| * 输入参数 `kwargs`:其他参数,具体说明参考函数 `text_ocr.ocr()`。 | |
| **返回值**:当 `return_text` 为 `True` 时,返回一个字符串;当 `return_text` 为 `False` 时,返回一个有序的(从上到下,从左到右)字典列表,每个字典表示一个检测框,包含以下键值: | |
| - `position`:块的位置信息,`np.ndarray`,形状为 `[4, 2]` | |
| - `text`:识别的文本 | |
| - `score`:置信度分数 [0, 1];分数越高,置信度越高 | |
| **调用示例**: | |
| ```python | |
| from pix2text import Pix2Text | |
| img_fp = 'examples/general.jpg' | |
| p2t = Pix2Text.from_config() | |
| out = p2t.recognize_text(img_fp) | |
| ``` | |
| ### 6. 函数 `.recognize()` | |
| 是不是觉得上面的接口太丰富了,使用起来有点麻烦?没关系,这个函数可以根据指定的图片类型调用上面的不同函数进行识别。 | |
| ```python | |
| def recognize( | |
| self, | |
| img: Union[str, Path, Image.Image], | |
| file_type: Literal[ | |
| 'pdf', 'page', 'text_formula', 'formula', 'text' | |
| ] = 'text_formula', | |
| **kwargs, | |
| ) -> Union[Document, Page, str, List[str], List[Any], List[List[Any]]]: | |
| """ | |
| Recognize the content of the image or pdf file according to the specified type. | |
| It will call the corresponding recognition function `.recognize_{file_type}()` according to the `file_type`. | |
| Args: | |
| img (Union[str, Path, Image.Image]): The image/pdf file path or `Image.Image` object | |
| file_type (str): Supported image types: 'pdf', 'page', 'text_formula', 'formula', 'text' | |
| **kwargs (dict): Arguments for the corresponding recognition function | |
| Returns: recognized results | |
| """ | |
| ``` | |
| **函数说明**: | |
| * 输入参数 `img`:图片/PDF文件路径或者 `Image.Image` 对象; | |
| * 输入参数 `file_type`:图片类型,可选值为 `'pdf'`, `'page'`, `'text_formula'`, `'formula'`, `'text'`; | |
| * 输入参数 `kwargs`:其他参数,具体说明参考上面的函数。 | |
| **返回值**:根据 `file_type` 的不同,返回不同的结果。具体说明参考上面的函数。 | |
| **调用示例**: | |
| ```python | |
| from pix2text import Pix2Text | |
| img_fp = 'examples/general.jpg' | |
| p2t = Pix2Text.from_config() | |
| out = p2t.recognize(img_fp, file_type='text') # 等价于 p2t.recognize_text(img_fp) | |
| ``` | |
| 更多使用示例请参见 [tests/test_pix2text.py](https://github.com/breezedeus/Pix2Text/blob/main/tests/test_pix2text.py)。 | |