Hugging Face's logo

Transformers documentation

GOT-OCR2

You are viewing main version, which requires installation from source. If you'd like regular pip install, checkout the latest stable version (v4.48.2).
Hugging Face's logo
Join the Hugging Face community

and get access to the augmented documentation experience

to get started

GOT-OCR2

Overview

The GOT-OCR2 model was proposed in General OCR Theory: Towards OCR-2.0 via a Unified End-to-end Model by Haoran Wei, Chenglong Liu, Jinyue Chen, Jia Wang, Lingyu Kong, Yanming Xu, Zheng Ge, Liang Zhao, Jianjian Sun, Yuang Peng, Chunrui Han, Xiangyu Zhang.

The abstract from the paper is the following:

Traditional OCR systems (OCR-1.0) are increasingly unable to meet people’snusage due to the growing demand for intelligent processing of man-made opticalncharacters. In this paper, we collectively refer to all artificial optical signals (e.g., plain texts, math/molecular formulas, tables, charts, sheet music, and even geometric shapes) as “characters” and propose the General OCR Theory along with an excellent model, namely GOT, to promote the arrival of OCR-2.0. The GOT, with 580M parameters, is a unified, elegant, and end-to-end model, consisting of a high-compression encoder and a long-contexts decoder. As an OCR-2.0 model, GOT can handle all the above “characters” under various OCR tasks. On the input side, the model supports commonly used scene- and document-style images in slice and whole-page styles. On the output side, GOT can generate plain or formatted results (markdown/tikz/smiles/kern) via an easy prompt. Besides, the model enjoys interactive OCR features, i.e., region-level recognition guided by coordinates or colors. Furthermore, we also adapt dynamic resolution and multipage OCR technologies to GOT for better practicality. In experiments, we provide sufficient results to prove the superiority of our model.

drawing GOT-OCR2 training stages. Taken from the original paper.

Tips:

GOT-OCR2 works on a wide range of tasks, including plain document OCR, scene text OCR, formatted document OCR, and even OCR for tables, charts, mathematical formulas, geometric shapes, molecular formulas and sheet music. While this implementation of the model will only output plain text, the outputs can be further processed to render the desired format, with packages like pdftex, mathpix, matplotlib, tikz, verovio or pyecharts. The model can also be used for interactive OCR, where the user can specify the region to be recognized by providing the coordinates or the color of the region’s bounding box.

This model was contributed by yonigozlan. The original code can be found here.

Usage example

Plain text inference

>>> from transformers import AutoProcessor, AutoModelForImageTextToText

>>> device = "cuda" if torch.cuda.is_available() else "cpu"
>>> model = AutoModelForImageTextToText.from_pretrained("stepfun-ai/GOT-OCR-2.0-hf", device_map=device)
>>> processor = AutoProcessor.from_pretrained("stepfun-ai/GOT-OCR-2.0-hf")

>>> image = "https://huggingface.co/datasets/hf-internal-testing/fixtures_got_ocr/resolve/main/image_ocr.jpg"
>>> inputs = processor(image, return_tensors="pt").to(device)

>>> generate_ids = model.generate(
...     **inputs,
...     do_sample=False,
...     tokenizer=processor.tokenizer,
...     stop_strings="<|im_end|>",
...     max_new_tokens=4096,
... )

>>> processor.decode(generate_ids[0, inputs["input_ids"].shape[1]:], skip_special_tokens=True)
"R&D QUALITY IMPROVEMENT\nSUGGESTION/SOLUTION FORM\nName/Phone Ext. : (...)"

Plain text inference batched

>>> from transformers import AutoProcessor, AutoModelForImageTextToText

>>> device = "cuda" if torch.cuda.is_available() else "cpu"
>>> model = AutoModelForImageTextToText.from_pretrained("stepfun-ai/GOT-OCR-2.0-hf", device_map=device)
>>> processor = AutoProcessor.from_pretrained("stepfun-ai/GOT-OCR-2.0-hf")

>>> image1 = "https://huggingface.co/datasets/hf-internal-testing/fixtures_got_ocr/resolve/main/multi_box.png"
>>> image2 = "https://huggingface.co/datasets/hf-internal-testing/fixtures_got_ocr/resolve/main/image_ocr.jpg"

>>> inputs = processor([image1, image2], return_tensors="pt").to(device)

>>> generate_ids = model.generate(
...     **inputs,
...     do_sample=False,
...     tokenizer=processor.tokenizer,
...     stop_strings="<|im_end|>",
...     max_new_tokens=4,
... )

>>> processor.batch_decode(generate_ids[:, inputs["input_ids"].shape[1] :], skip_special_tokens=True)
["Reducing the number", "R&D QUALITY"]

Formatted text inference

GOT-OCR2 can also generate formatted text, such as markdown or LaTeX. Here is an example of how to generate formatted text:

>>> from transformers import AutoProcessor, AutoModelForImageTextToText

>>> device = "cuda" if torch.cuda.is_available() else "cpu"
>>> model = AutoModelForImageTextToText.from_pretrained("stepfun-ai/GOT-OCR-2.0-hf", device_map=device)
>>> processor = AutoProcessor.from_pretrained("stepfun-ai/GOT-OCR-2.0-hf")

>>> image = "https://huggingface.co/datasets/hf-internal-testing/fixtures_got_ocr/resolve/main/latex.png"
>>> inputs = processor(image, return_tensors="pt", format=True).to(device)

>>> generate_ids = model.generate(
...     **inputs,
...     do_sample=False,
...     tokenizer=processor.tokenizer,
...     stop_strings="<|im_end|>",
...     max_new_tokens=4096,
... )

>>> processor.decode(generate_ids[0, inputs["input_ids"].shape[1]:], skip_special_tokens=True)
"\\author{\nHanwen Jiang*{@html "quad\\quad"} Arjun Karpur{@html "daggerquad{ }^{\\dagger} \\quad"} Bingyi Cao{@html "daggerquad{ }^{\\dagger} \\quad"} (...)"

Inference on multiple pages

Although it might be reasonable in most cases to use a “for loop” for multi-page processing, some text data with formatting across several pages make it necessary to process all pages at once. GOT introduces a multi-page OCR (without “for loop”) feature, where multiple pages can be processed by the model at once, whith the output being one continuous text. Here is an example of how to process multiple pages at once:

>>> from transformers import AutoProcessor, AutoModelForImageTextToText

>>> device = "cuda" if torch.cuda.is_available() else "cpu"
>>> model = AutoModelForImageTextToText.from_pretrained("stepfun-ai/GOT-OCR-2.0-hf", device_map=device)
>>> processor = AutoProcessor.from_pretrained("stepfun-ai/GOT-OCR-2.0-hf")

>>> image1 = "https://huggingface.co/datasets/hf-internal-testing/fixtures_got_ocr/resolve/main/page1.png"
>>> image2 = "https://huggingface.co/datasets/hf-internal-testing/fixtures_got_ocr/resolve/main/page2.png"
>>> inputs = processor([image1, image2], return_tensors="pt", multi_page=True, format=True).to(device)

>>> generate_ids = model.generate(
...     **inputs,
...     do_sample=False,
...     tokenizer=processor.tokenizer,
...     stop_strings="<|im_end|>",
...     max_new_tokens=4096,
... )

>>> processor.decode(generate_ids[0, inputs["input_ids"].shape[1]:], skip_special_tokens=True)
"\\title{\nGeneral OCR Theory: Towards OCR-2.0 via a Unified End-to-end Model\n}\n\\author{\nHaoran Wei (...)"

Inference on cropped patches

GOT supports a 1024×1024 input resolution, which is sufficient for most OCR tasks, such as scene OCR or processing A4-sized PDF pages. However, certain scenarios, like horizontally stitched two-page PDFs commonly found in academic papers or images with unusual aspect ratios, can lead to accuracy issues when processed as a single image. To address this, GOT can dynamically crop an image into patches, process them all at once, and merge the results for better accuracy with such inputs. Here is an example of how to process cropped patches:

>>> import torch
>>> from transformers import AutoProcessor, AutoModelForImageTextToText

>>> device = "cuda" if torch.cuda.is_available() else "cpu"
>>> model = AutoModelForImageTextToText.from_pretrained("stepfun-ai/GOT-OCR-2.0-hf", torch_dtype=torch.bfloat16, device_map=device)
>>> processor = AutoProcessor.from_pretrained("stepfun-ai/GOT-OCR-2.0-hf")

>>> image = "https://huggingface.co/datasets/hf-internal-testing/fixtures_got_ocr/resolve/main/one_column.png"
>>> inputs = processor(image, return_tensors="pt", format=True, crop_to_patches=True, max_patches=3).to(device)

>>> generate_ids = model.generate(
...     **inputs,
...     do_sample=False,
...     tokenizer=processor.tokenizer,
...     stop_strings="<|im_end|>",
...     max_new_tokens=4096,
... )

>>> processor.decode(generate_ids[0, inputs["input_ids"].shape[1]:], skip_special_tokens=True)
"on developing architectural improvements to make learnable matching methods generalize.\nMotivated by the above observations, (...)"

Inference on a specific region

GOT supports interactive OCR, where the user can specify the region to be recognized by providing the coordinates or the color of the region’s bounding box. Here is an example of how to process a specific region:

>>> from transformers import AutoProcessor, AutoModelForImageTextToText

>>> device = "cuda" if torch.cuda.is_available() else "cpu"
>>> model = AutoModelForImageTextToText.from_pretrained("stepfun-ai/GOT-OCR-2.0-hf", device_map=device)
>>> processor = AutoProcessor.from_pretrained("stepfun-ai/GOT-OCR-2.0-hf")

>>> image = "https://huggingface.co/datasets/hf-internal-testing/fixtures_got_ocr/resolve/main/multi_box.png"
>>> inputs = processor(image, return_tensors="pt", color="green").to(device) # or box=[x1, y1, x2, y2] for coordinates (image pixels)

>>> generate_ids = model.generate(
...     **inputs,
...     do_sample=False,
...     tokenizer=processor.tokenizer,
...     stop_strings="<|im_end|>",
...     max_new_tokens=4096,
... )

>>> processor.decode(generate_ids[0, inputs["input_ids"].shape[1]:], skip_special_tokens=True)
"You should keep in mind what features from the module should be used, especially \nwhen you’re planning to sell a template."

Inference on general OCR data example: sheet music

Although this implementation of the model will only output plain text, the outputs can be further processed to render the desired format, with packages like pdftex, mathpix, matplotlib, tikz, verovio or pyecharts. Here is an example of how to process sheet music:

>>> from transformers import AutoProcessor, AutoModelForImageTextToText
>>> import verovio

>>> device = "cuda" if torch.cuda.is_available() else "cpu"
>>> model = AutoModelForImageTextToText.from_pretrained("stepfun-ai/GOT-OCR-2.0-hf", device_map=device)
>>> processor = AutoProcessor.from_pretrained("stepfun-ai/GOT-OCR-2.0-hf")

>>> image = "https://huggingface.co/datasets/hf-internal-testing/fixtures_got_ocr/resolve/main/sheet_music.png"
>>> inputs = processor(image, return_tensors="pt", format=True).to(device)

>>> generate_ids = model.generate(
...     **inputs,
...     do_sample=False,
...     tokenizer=processor.tokenizer,
...     stop_strings="<|im_end|>",
...     max_new_tokens=4096,
... )

>>> outputs = processor.decode(generate_ids[0, inputs["input_ids"].shape[1]:], skip_special_tokens=True)
>>> tk = verovio.toolkit()
>>> tk.loadData(outputs)
>>> tk.setOptions(
...     {
...         "pageWidth": 2100,
...         "pageHeight": 800,
...         "footer": "none",
...         "barLineWidth": 0.5,
...         "beamMaxSlope": 15,
...         "staffLineWidth": 0.2,
...         "spacingStaff": 6,
...     }
... )
>>> tk.getPageCount()
>>> svg = tk.renderToSVG()
>>> svg = svg.replace('overflow="inherit"', 'overflow="visible"')
>>> with open("output.svg", "w") as f:
>>>     f.write(svg)
drawing

GotOcr2Config

class transformers.GotOcr2Config

< >

( vision_config = None text_config = None ignore_index = -100 image_token_index = 151859 image_seq_length = 576 pad_token_id = -1 **kwargs )

Parameters

  • vision_config (Union[AutoConfig, dict], optional, defaults to CLIPVisionConfig) — The config object or dictionary of the vision backbone.
  • text_config (Union[AutoConfig, dict], optional, defaults to LlamaConfig) — The config object or dictionary of the text backbone.
  • ignore_index (int, optional, defaults to -100) — The ignore index for the loss function.
  • image_token_index (int, optional, defaults to 151859) — The image token index to encode the image prompt.
  • image_seq_length (int, optional, defaults to 576) — Sequence length of one image embedding.
  • pad_token_id (int, optional, defaults to -1) — Padding token id.

This is the configuration class to store the configuration of a GotOcr2ForConditionalGeneration. It is used to instantiate a GotOcr2 model according to the specified arguments, defining the model architecture. Instantiating a configuration with the defaults will yield a similar configuration to that of GOT-OCR-2.0.

e.g stepfun-ai/GOT-OCR-2.0-hf

Configuration objects inherit from PretrainedConfig and can be used to control the model outputs. Read the documentation from PretrainedConfig for more information.

>>> from transformers import GotOcr2ForConditionalGeneration, GotOcr2Config

>>> # Initializing a GotOcr2 style configuration
>>> configuration = GotOcr2Config()

>>> # Initializing a model from the Qwen2-VL-7B style configuration
>>> model = GotOcr2ForConditionalGeneration(configuration)

>>> # Accessing the model configuration
>>> configuration = model.config

GotOcr2VisionConfig

class transformers.GotOcr2VisionConfig

< >

( hidden_size = 768 output_channels = 256 num_hidden_layers = 12 num_attention_heads = 12 num_channels = 3 image_size = 1024 patch_size = 16 hidden_act = 'gelu' layer_norm_eps = 1e-06 attention_dropout = 0.0 initializer_range = 1e-10 qkv_bias = True use_abs_pos = True use_rel_pos = True window_size = 14 global_attn_indexes = [2, 5, 8, 11] mlp_dim = 3072 **kwargs )

Parameters

  • hidden_size (int, optional, defaults to 768) — Dimensionality of the encoder layers and the pooler layer.
  • output_channels (int, optional, defaults to 256) — Dimensionality of the output channels in the Patch Encoder.
  • num_hidden_layers (int, optional, defaults to 12) — Number of hidden layers in the Transformer encoder.
  • num_attention_heads (int, optional, defaults to 12) — Number of attention heads for each attention layer in the Transformer encoder.
  • num_channels (int, optional, defaults to 3) — Number of channels in the input image.
  • image_size (int, optional, defaults to 1024) — Expected resolution. Target size of the resized input image.
  • patch_size (int, optional, defaults to 16) — Size of the patches to be extracted from the input image.
  • hidden_act (str, optional, defaults to "gelu") — The non-linear activation function (function or string)
  • layer_norm_eps (float, optional, defaults to 1e-06) — The epsilon used by the layer normalization layers.
  • attention_dropout (float, optional, defaults to 0.0) — The dropout ratio for the attention probabilities.
  • initializer_range (float, optional, defaults to 1e-10) — The standard deviation of the truncated_normal_initializer for initializing all weight matrices.
  • qkv_bias (bool, optional, defaults to True) — Whether to add a bias to query, key, value projections.
  • use_abs_pos (bool, optional, defaults to True) — Whether to use absolute position embedding.
  • use_rel_pos (bool, optional, defaults to True) — Whether to use relative position embedding.
  • window_size (int, optional, defaults to 14) — Window size for relative position.
  • global_attn_indexes (List[int], optional, defaults to [2, 5, 8, 11]) — The indexes of the global attention layers.
  • mlp_dim (int, optional, defaults to 3072) — The dimensionality of the MLP layer in the Transformer encoder.

This is the configuration class to store the configuration of a GotOcr2VisionModel. It is used to instantiate a GOT_OCR2 vision encoder according to the specified arguments, defining the model architecture. Instantiating a configuration defaults will yield a similar configuration to that of the SAM ViT-h facebook/sam-vit-huge architecture.

Configuration objects inherit from PretrainedConfig and can be used to control the model outputs. Read the documentation from PretrainedConfig for more information.

GotOcr2ImageProcessor

class transformers.GotOcr2ImageProcessor

< >

( do_resize: bool = True size: typing.Dict[str, int] = None resample: Resampling = <Resampling.BICUBIC: 3> do_rescale: bool = True rescale_factor: typing.Union[int, float] = 0.00392156862745098 do_normalize: bool = True image_mean: typing.Union[float, typing.List[float], NoneType] = None image_std: typing.Union[float, typing.List[float], NoneType] = None do_convert_rgb: bool = True **kwargs )

Parameters

  • do_resize (bool, optional, defaults to True) — Whether to resize the image’s (height, width) dimensions to the specified size. Can be overridden by the do_resize parameter in the preprocess method.
  • size (dict, optional, defaults to {"height" -- 384, "width": 384}): Size of the output image after resizing. Can be overridden by the size parameter in the preprocess method.
  • resample (PILImageResampling, optional, defaults to Resampling.BICUBIC) — Resampling filter to use if resizing the image. Only has an effect if do_resize is set to True. Can be overridden by the resample parameter in the preprocess method.
  • do_rescale (bool, optional, defaults to True) — Whether to rescale the image by the specified scale rescale_factor. Can be overridden by the do_rescale parameter in the preprocess method.
  • rescale_factor (int or float, optional, defaults to 1/255) — Scale factor to use if rescaling the image. Only has an effect if do_rescale is set to True. Can be overridden by the rescale_factor parameter in the preprocess method.
  • do_normalize (bool, optional, defaults to True) — Whether to normalize the image. Can be overridden by the do_normalize parameter in the preprocess method. Can be overridden by the do_normalize parameter in the preprocess method.
  • image_mean (float or List[float], optional, defaults to IMAGENET_STANDARD_MEAN) — Mean to use if normalizing the image. This is a float or list of floats the length of the number of channels in the image. Can be overridden by the image_mean parameter in the preprocess method. Can be overridden by the image_mean parameter in the preprocess method.
  • image_std (float or List[float], optional, defaults to IMAGENET_STANDARD_STD) — Standard deviation to use if normalizing the image. This is a float or list of floats the length of the number of channels in the image. Can be overridden by the image_std parameter in the preprocess method. Can be overridden by the image_std parameter in the preprocess method.
  • do_convert_rgb (bool, optional, defaults to True) — Whether to convert the image to RGB.

Constructs a GOT_OCR2 image processor.

crop_image_to_patches

< >

( image: typing.Union[ForwardRef('PIL.Image.Image'), numpy.ndarray, ForwardRef('torch.Tensor'), typing.List[ForwardRef('PIL.Image.Image')], typing.List[numpy.ndarray], typing.List[ForwardRef('torch.Tensor')]] min_patches: int max_patches: int use_thumbnail: bool = True patch_size: typing.Union[typing.Tuple, int, dict] = None return_numpy: bool = False data_format: ChannelDimension = None ) → ListPIL.Image.Image or List[np.ndarray]

Parameters

  • image (PIL.Image.Image, np.ndarray, torch.Tensor) — The image to be cropped. The image can be a PIL image, NumPy array or PyTorch tensor.
  • min_patches (int) — The minimum number of patches to be extracted from the image.
  • max_patches (int) — The maximum number of patches to be extracted from the image.
  • use_thumbnail (bool, optional, defaults to True) — Whether to add a thumbnail image to the list of cropped patches.
  • patch_size (int, Tuple[int, int], dict, optional) — The size of the output patches.
  • return_numpy (bool, optional, defaults to False) — Whether to return the cropped images as NumPy arrays.
  • data_format (ChannelDimension, optional) — The format of the image data. If None, the format is inferred from the input image.

Returns

ListPIL.Image.Image or List[np.ndarray]

The list of cropped images.

Crop the image to patches and return a list of cropped images. The number of patches and their grid arrangement are determined by the original image size, the target patch size and the minimum and maximum number of patches. The aspect ratio of the patches grid is chosen to be the closest to the original image aspect ratio.

preprocess

< >

( images: typing.Union[ForwardRef('PIL.Image.Image'), numpy.ndarray, ForwardRef('torch.Tensor'), typing.List[ForwardRef('PIL.Image.Image')], typing.List[numpy.ndarray], typing.List[ForwardRef('torch.Tensor')]] do_resize: typing.Optional[bool] = None size: typing.Optional[typing.Dict[str, int]] = None resample: Resampling = None do_rescale: typing.Optional[bool] = None rescale_factor: typing.Optional[float] = None do_normalize: typing.Optional[bool] = None image_mean: typing.Union[float, typing.List[float], NoneType] = None image_std: typing.Union[float, typing.List[float], NoneType] = None return_tensors: typing.Union[str, transformers.utils.generic.TensorType, NoneType] = None do_convert_rgb: bool = None data_format: ChannelDimension = <ChannelDimension.FIRST: 'channels_first'> input_data_format: typing.Union[str, transformers.image_utils.ChannelDimension, NoneType] = None )

Parameters

  • images (ImageInput) — Image to preprocess. Expects a single or batch of images with pixel values ranging from 0 to 255. If passing in images with pixel values between 0 and 1, set do_rescale=False.
  • do_resize (bool, optional, defaults to self.do_resize) — Whether to resize the image.
  • size (Dict[str, int], optional, defaults to self.size) — Controls the size of the image after resize. The shortest edge of the image is resized to size["shortest_edge"] whilst preserving the aspect ratio. If the longest edge of this resized image is > int(size["shortest_edge"] * (1333 / 800)), then the image is resized again to make the longest edge equal to int(size["shortest_edge"] * (1333 / 800)).
  • resample (PILImageResampling, optional, defaults to self.resample) — Resampling filter to use if resizing the image. Only has an effect if do_resize is set to True.
  • do_rescale (bool, optional, defaults to self.do_rescale) — Whether to rescale the image values between [0 - 1].
  • rescale_factor (float, optional, defaults to self.rescale_factor) — Rescale factor to rescale the image by if do_rescale is set to True.
  • do_normalize (bool, optional, defaults to self.do_normalize) — Whether to normalize the image.
  • image_mean (float or List[float], optional, defaults to self.image_mean) — Image mean to normalize the image by if do_normalize is set to True.
  • image_std (float or List[float], optional, defaults to self.image_std) — Image standard deviation to normalize the image by if do_normalize is set to True.
  • do_convert_rgb (bool, optional, defaults to self.do_convert_rgb) — Whether to convert the image to RGB.
  • return_tensors (str or TensorType, optional) — The type of tensors to return. Can be one of:
    • Unset: Return a list of np.ndarray.
    • TensorType.TENSORFLOW or 'tf': Return a batch of type tf.Tensor.
    • TensorType.PYTORCH or 'pt': Return a batch of type torch.Tensor.
    • TensorType.NUMPY or 'np': Return a batch of type np.ndarray.
    • TensorType.JAX or 'jax': Return a batch of type jax.numpy.ndarray.
  • data_format (ChannelDimension or str, optional, defaults to ChannelDimension.FIRST) — The channel dimension format for the output image. Can be one of:
    • "channels_first" or ChannelDimension.FIRST: image in (num_channels, height, width) format.
    • "channels_last" or ChannelDimension.LAST: image in (height, width, num_channels) format.
    • Unset: Use the channel dimension format of the input image.
  • input_data_format (ChannelDimension or str, optional) — The channel dimension format for the input image. If unset, the channel dimension format is inferred from the input image. Can be one of:
    • "channels_first" or ChannelDimension.FIRST: image in (num_channels, height, width) format.
    • "channels_last" or ChannelDimension.LAST: image in (height, width, num_channels) format.
    • "none" or ChannelDimension.NONE: image in (height, width) format.

Preprocess an image or batch of images.

resize

< >

( image: ndarray size: typing.Dict[str, int] resample: Resampling = <Resampling.BICUBIC: 3> data_format: typing.Union[str, transformers.image_utils.ChannelDimension, NoneType] = None input_data_format: typing.Union[str, transformers.image_utils.ChannelDimension, NoneType] = None **kwargs ) → np.ndarray

Parameters

  • image (np.ndarray) — Image to resize.
  • size (Dict[str, int]) — Dictionary in the format {"height": int, "width": int} specifying the size of the output image.
  • resample (PILImageResampling, optional, defaults to PILImageResampling.BICUBIC) — PILImageResampling filter to use when resizing the image e.g. PILImageResampling.BICUBIC.
  • data_format (ChannelDimension or str, optional) — The channel dimension format for the output image. If unset, the channel dimension format of the input image is used. Can be one of:
    • "channels_first" or ChannelDimension.FIRST: image in (num_channels, height, width) format.
    • "channels_last" or ChannelDimension.LAST: image in (height, width, num_channels) format.
    • "none" or ChannelDimension.NONE: image in (height, width) format.
  • input_data_format (ChannelDimension or str, optional) — The channel dimension format for the input image. If unset, the channel dimension format is inferred from the input image. Can be one of:
    • "channels_first" or ChannelDimension.FIRST: image in (num_channels, height, width) format.
    • "channels_last" or ChannelDimension.LAST: image in (height, width, num_channels) format.
    • "none" or ChannelDimension.NONE: image in (height, width) format.

Returns

np.ndarray

The resized image.

Resize an image to (size["height"], size["width"]).

GotOcr2Processor

class transformers.GotOcr2Processor

< >

( image_processor = None tokenizer = None chat_template = None **kwargs )

Parameters

  • image_processor (GotOcr2ImageProcessor, optional) — The image processor is a required input.
  • tokenizer ([PreTrainedTokenizer, PreTrainedTokenizerFast], optional) — The tokenizer is a required input.
  • chat_template (str, optional) — A Jinja template which will be used to convert lists of messages in a chat into a tokenizable string.

Constructs a GotOcr2 processor which wraps a GotOcr2ImageProcessor and PretrainedTokenizerFast tokenizer into a single processor that inherits both the image processor and tokenizer functionalities. See the __call__() and decode() for more information.

batch_decode

< >

( *args **kwargs )

This method forwards all its arguments to PreTrainedTokenizerFast’s batch_decode(). Please refer to the docstring of this method for more information.

decode

< >

( *args **kwargs )

This method forwards all its arguments to PreTrainedTokenizerFast’s decode(). Please refer to the docstring of this method for more information.

GotOcr2ForConditionalGeneration

class transformers.GotOcr2ForConditionalGeneration

< >

( config: GotOcr2Config )

Parameters

  • config (GotOcr2Config or GotOcr2VisionConfig) — Model configuration class with all the parameters of the model. Initializing with a config file does not load the weights associated with the model, only the configuration. Check out the from_pretrained() method to load the model weights.

The GOT_OCR2 model which consists of a vision backbone and a language model. This model inherits from PreTrainedModel. Check the superclass documentation for the generic methods the library implements for all its model (such as downloading or saving, resizing the input embeddings, pruning heads etc.)

This model is also a PyTorch torch.nn.Module subclass. Use it as a regular PyTorch Module and refer to the PyTorch documentation for all matter related to general usage and behavior.

forward

< >

( input_ids: LongTensor = None pixel_values: FloatTensor = None attention_mask: typing.Optional[torch.Tensor] = None position_ids: typing.Optional[torch.LongTensor] = None past_key_values: typing.Optional[typing.List[torch.FloatTensor]] = None inputs_embeds: typing.Optional[torch.FloatTensor] = None labels: typing.Optional[torch.LongTensor] = None use_cache: typing.Optional[bool] = None output_attentions: typing.Optional[bool] = None output_hidden_states: typing.Optional[bool] = None return_dict: typing.Optional[bool] = None cache_position: typing.Optional[torch.LongTensor] = None logits_to_keep: typing.Union[int, torch.Tensor] = 0 ) → transformers.models.got_ocr2.modeling_got_ocr2.GotOcr2CausalLMOutputWithPast or tuple(torch.FloatTensor)

Parameters

  • input_ids (torch.LongTensor of shape (batch_size, sequence_length)) — Indices of input sequence tokens in the vocabulary. Padding will be ignored by default should you provide it.

    Indices can be obtained using AutoTokenizer. See PreTrainedTokenizer.encode() and PreTrainedTokenizer.call() for details.

    What are input IDs?

  • pixel_values (torch.FloatTensor of shape (batch_size, num_channels, image_size, image_size)) -- The tensors corresponding to the input images. Pixel values can be obtained using [AutoImageProcessor](/docs/transformers/main/en/model_doc/auto#transformers.AutoImageProcessor). See [CLIPImageProcessor.__call__()](/docs/transformers/main/en/model_doc/deit#transformers.DeiTFeatureExtractor.__call__) for details ([]GotOcr2Processor`] uses CLIPImageProcessor for processing images).
  • attention_mask (torch.Tensor of shape (batch_size, sequence_length), optional) — Mask to avoid performing attention on padding token indices. Mask values selected in [0, 1]:

    • 1 for tokens that are not masked,
    • 0 for tokens that are masked.

    What are attention masks?

    Indices can be obtained using AutoTokenizer. See PreTrainedTokenizer.encode() and PreTrainedTokenizer.call() for details.

    If past_key_values is used, optionally only the last decoder_input_ids have to be input (see past_key_values).

    If you want to change padding behavior, you should read modeling_opt._prepare_decoder_attention_mask and modify to your needs. See diagram 1 in the paper for more information on the default strategy.

    • 1 indicates the head is not masked,
    • 0 indicates the head is masked.
  • position_ids (torch.LongTensor of shape (batch_size, sequence_length), optional) — Indices of positions of each input sequence tokens in the position embeddings. Selected in the range [0, config.n_positions - 1]. What are position IDs?
  • past_key_values (tuple(tuple(torch.FloatTensor)), optional, returned when use_cache=True is passed or when config.use_cache=True) — Tuple of tuple(torch.FloatTensor) of length config.n_layers, with each tuple having 2 tensors of shape (batch_size, num_heads, sequence_length, embed_size_per_head)) and 2 additional tensors of shape (batch_size, num_heads, encoder_sequence_length, embed_size_per_head).

    Contains pre-computed hidden-states (key and values in the self-attention blocks and in the cross-attention blocks) that can be used (see past_key_values input) to speed up sequential decoding.

    If past_key_values are used, the user can optionally input only the last decoder_input_ids (those that don’t have their past key value states given to this model) of shape (batch_size, 1) instead of all decoder_input_ids of shape (batch_size, sequence_length).

  • inputs_embeds (torch.FloatTensor of shape (batch_size, sequence_length, hidden_size), optional) — Optionally, instead of passing input_ids you can choose to directly pass an embedded representation. This is useful if you want more control over how to convert input_ids indices into associated vectors than the model’s internal embedding lookup matrix.
  • vision_feature_layer (Union[int, List[int]], *optional*, defaults to -2) — The index of the layer to select the vision feature. If multiple indices are provided, the vision feature of the corresponding indices will be concatenated to form the vision features.
  • vision_feature_select_strategy (str, optional, defaults to "default") — The feature selection strategy used to select the vision feature from the vision backbone. Can be one of "default" or "full".
  • use_cache (bool, optional) — If set to True, past_key_values key value states are returned and can be used to speed up decoding (see past_key_values).
  • output_attentions (bool, optional) — Whether or not to return the attentions tensors of all attention layers. See attentions under returned tensors for more detail.
  • output_hidden_states (bool, optional) — Whether or not to return the hidden states of all layers. See hidden_states under returned tensors for more detail.
  • return_dict (bool, optional) — Whether or not to return a ModelOutput instead of a plain tuple.
  • cache_position (torch.LongTensor of shape (sequence_length), optional) — Indices depicting the position of the input sequence tokens in the sequence. Contrarily to position_ids, this tensor is not affected by padding. It is used to update the cache in the correct position and to infer the complete sequence length.
  • Args — labels (torch.LongTensor of shape (batch_size, sequence_length), optional): Labels for computing the masked language modeling loss. Indices should either be in [0, ..., config.vocab_size] or -100 (see input_ids docstring). Tokens with indices set to -100 are ignored (masked), the loss is only computed for the tokens with labels in [0, ..., config.vocab_size].

    logits_to_keep (int or torch.Tensor, optional): If an int, compute logits for the last logits_to_keep tokens. If 0, calculate logits for all input_ids (special case). Only last token logits are needed for generation, and calculating them only for that token can save memory, which becomes pretty significant for long sequences or large vocabulary size. If a torch.Tensor, must be 1D corresponding to the indices to keep in the sequence length dimension. This is useful when using packed tensor format (single dimension for batch and sequence length).

Returns

transformers.models.got_ocr2.modeling_got_ocr2.GotOcr2CausalLMOutputWithPast or tuple(torch.FloatTensor)

A transformers.models.got_ocr2.modeling_got_ocr2.GotOcr2CausalLMOutputWithPast or a tuple of torch.FloatTensor (if return_dict=False is passed or when config.return_dict=False) comprising various elements depending on the configuration (GotOcr2Config) and inputs.

  • loss (torch.FloatTensor of shape (1,), optional, returned when labels is provided) — Language modeling loss (for next-token prediction).

  • logits (torch.FloatTensor of shape (batch_size, sequence_length, config.vocab_size)) — Prediction scores of the language modeling head (scores for each vocabulary token before SoftMax).

  • past_key_values (tuple(tuple(torch.FloatTensor)), optional, returned when use_cache=True is passed or when config.use_cache=True) — Tuple of tuple(torch.FloatTensor) of length config.n_layers, with each tuple having 2 tensors of shape (batch_size, num_heads, sequence_length, embed_size_per_head))

    Contains pre-computed hidden-states (key and values in the self-attention blocks) that can be used (see past_key_values input) to speed up sequential decoding.

  • hidden_states (tuple(torch.FloatTensor), optional, returned when output_hidden_states=True is passed or when config.output_hidden_states=True) — Tuple of torch.FloatTensor (one for the output of the embeddings, if the model has an embedding layer, + one for the output of each layer) of shape (batch_size, sequence_length, hidden_size).

    Hidden-states of the model at the output of each layer plus the optional initial embedding outputs.

  • attentions (tuple(torch.FloatTensor), optional, returned when output_attentions=True is passed or when config.output_attentions=True) — Tuple of torch.FloatTensor (one for each layer) of shape (batch_size, num_heads, sequence_length, sequence_length).

    Attentions weights after the attention softmax, used to compute the weighted average in the self-attention heads.

  • image_hidden_states (torch.FloatTensor, optional) — A torch.FloatTensor of size (batch_size, num_images, sequence_length, hidden_size)`. image_hidden_states of the model produced by the vision encoder and after projecting the last hidden state.

The GotOcr2ForConditionalGeneration forward method, overrides the __call__ special method.

Although the recipe for forward pass needs to be defined within this function, one should call the Module instance afterwards instead of this since the former takes care of running the pre and post processing steps while the latter silently ignores them.

Example:

>>> from PIL import Image
>>> import requests
>>> from transformers import AutoProcessor, GotOcr2ForConditionalGeneration, TextStreamer

>>> model = GotOcr2ForConditionalGeneration.from_pretrained("stepfun-ai/GOT-OCR-2.0-hf").to("cuda")
>>> processor = AutoProcessor.from_pretrained("stepfun-ai/GOT-OCR-2.0-hf")

>>> url = "https://huggingface.co/datasets/hf-internal-testing/fixtures_got_ocr/resolve/main/multi_box.png"
>>> image = Image.open(requests.get(url, stream=True).raw)

>>> inputs = processor(image, return_tensors="pt", color="green").to("cuda")

>>> # Generate
>>> streamer = TextStreamer(processor.tokenizer, skip_prompt=True, skip_special_tokens=True)
>>> generate_ids = model.generate(
...     **inputs,
...     do_sample=False,
...     tokenizer = processor.tokenizer,
...     stop_strings='<|im_end|>',
...     streamer=streamer,
...     max_new_tokens=4096,
... )
"You should keep in mind what features from the module should be used, especially
when you're planning to sell a template."
< > Update on GitHub

←GIT Grounding DINO→