app.py

import gradio as gr
import torch
from transformers import AutoModel, AutoTokenizer, AutoConfig
import os
import base64
import spaces
import io
import tempfile
from PIL import Image
import io


title = """# 🙋🏻‍♂️Welcome to Tonic's🫴🏻📸GOT-OCR"""
description = """"
The GOT-OCR model is a revolutionary step in the evolution of OCR systems, boasting 580M parameters and the ability to process various forms of "characters." It features a high-compression encoder and a long-context decoder, making it well-suited for both scene- and document-style images. The model also supports multi-page and dynamic resolution OCR for added practicality.

The model can output results in a variety of formats, including plain text, markdown, and even complex outputs like TikZ diagrams or molecular SMILES strings. Interactive OCR allows users to specify regions of interest for OCR using coordinates or colors.

## Features
- **Plain Text OCR**: Recognizes and extracts plain text from images.
- **Formatted Text OCR**: Extracts text while preserving its formatting (tables, formulas, etc.).
- **Fine-grained OCR**: Box-based and color-based OCR for precise text extraction from specific regions.
- **Multi-crop OCR**: Processes multiple cropped regions within an image.
- **Rendered Formatted OCR Results**: Outputs OCR results in markdown, TikZ, SMILES, or other formats with rendered formatting.

GOT-OCR-2.0 can handle:
- Plain text
- Math/molecular formulas
- Tables
- Charts
- Sheet music
- Geometric shapes

## How to Use
1. Select a task from the dropdown menu.
2. Upload an image.
3. (Optional) Fill in additional parameters based on the task.
4. Click **Process** to see the results.
---
### Join us : 
🌟TeamTonic🌟 is always making cool demos! Join our active builder's 🛠️community 👻 [![Join us on Discord](https://img.shields.io/discord/1109943800132010065?label=Discord&logo=discord&style=flat-square)](https://discord.gg/qdfnvSPcqP) On 🤗Huggingface:[MultiTransformer](https://huggingface.co/MultiTransformer) On 🌐Github: [Tonic-AI](https://github.com/tonic-ai) & contribute to🌟 [Build Tonic](https://git.tonic-ai.com/contribute)🤗Big thanks to Yuvi Sharma and all the folks at huggingface for the community grant 🤗
"""

model_name = 'ucaslcl/GOT-OCR2_0'


tokenizer = AutoTokenizer.from_pretrained('ucaslcl/GOT-OCR2_0', trust_remote_code=True)
model = AutoModel.from_pretrained('ucaslcl/GOT-OCR2_0', trust_remote_code=True, low_cpu_mem_usage=True, device_map='cuda', use_safetensors=True, pad_token_id=tokenizer.eos_token_id)
model = model.eval().cuda()
model.config.pad_token_id = tokenizer.eos_token_id

def save_image_to_temp_file(image):
    with tempfile.NamedTemporaryFile(delete=False, suffix=".png") as temp_file:
        image.save(temp_file, format="PNG")
        return temp_file.name

@spaces.GPU
def process_image(image, task, ocr_type=None, ocr_box=None, ocr_color=None):
    try:
        if image is None:
            return "No image provided", None

        temp_image_path = save_image_to_temp_file(image)

        if task == "Plain Text OCR":
            res = model.chat(tokenizer, temp_image_path, ocr_type='ocr')
        elif task == "Format Text OCR":
            res = model.chat(tokenizer, temp_image_path, ocr_type='format')
        elif task == "Fine-grained OCR (Box)":
            res = model.chat(tokenizer, temp_image_path, ocr_type=ocr_type, ocr_box=ocr_box)
        elif task == "Fine-grained OCR (Color)":
            res = model.chat(tokenizer, temp_image_path, ocr_type=ocr_type, ocr_color=ocr_color)
        elif task == "Multi-crop OCR":
            res = model.chat_crop(tokenizer, image_file=temp_image_path)
        elif task == "Render Formatted OCR":
            res = model.chat(tokenizer, temp_image_path, ocr_type='format', render=True, save_render_file='./results/demo.html')
            with open('./results/demo.html', 'r') as f:
                html_content = f.read()
            os.remove(temp_image_path)
            return res, html_content
        
        # Clean up
        os.remove(temp_image_path)
        
        return res, None
    except Exception as e:
        return str(e), None
    
def update_inputs(task):
    if task == "Plain Text OCR" or task == "Format Text OCR" or task == "Multi-crop OCR":
        return [gr.update(visible=False)] * 4
    elif task == "Fine-grained OCR (Box)":
        return [
            gr.update(visible=True, choices=["ocr", "format"]),
            gr.update(visible=True),
            gr.update(visible=False),
            gr.update(visible=False)
        ]
    elif task == "Fine-grained OCR (Color)":
        return [
            gr.update(visible=True, choices=["ocr", "format"]),
            gr.update(visible=False),
            gr.update(visible=True, choices=["red", "green", "blue"]),
            gr.update(visible=False)
        ]
    elif task == "Render Formatted OCR":
        return [gr.update(visible=False)] * 3 + [gr.update(visible=True)]
    

def ocr_demo(image, task, ocr_type, ocr_box, ocr_color):
    result = process_image(image, task, ocr_type, ocr_box, ocr_color)
    if isinstance(result, tuple) and len(result) == 2:
        res, html_content = result
        if html_content:
            return res, html_content
    return result, None

with gr.Blocks() as demo:
    gr.Markdown(title)
    gr.Markdown(description)
    with gr.Row():
        with gr.Column():
            image_input = gr.Image(type="pil", label="Input Image")
            task_dropdown = gr.Dropdown(
                choices=[
                    "Plain Text OCR",
                    "Format Text OCR",
                    "Fine-grained OCR (Box)",
                    "Fine-grained OCR (Color)",
                    "Multi-crop OCR",
                    "Render Formatted OCR"
                ],
                label="Select Task",
                value="Plain Text OCR"
            )
            ocr_type_dropdown = gr.Dropdown(
                choices=["ocr", "format"],
                label="OCR Type",
                visible=False
            )
            ocr_box_input = gr.Textbox(
                label="OCR Box (x1,y1,x2,y2)",
                placeholder="e.g., 100,100,200,200",
                visible=False
            )
            ocr_color_dropdown = gr.Dropdown(
                choices=["red", "green", "blue"],
                label="OCR Color",
                visible=False
            )
            render_checkbox = gr.Checkbox(
                label="Render Result",
                visible=False   
            )
            submit_button = gr.Button("Process")
        
        with gr.Column():
            output_text = gr.Textbox(label="OCR Result")
            output_html = gr.HTML(label="Rendered HTML Output")
    
    gr.Markdown("""## GOT-OCR 2.0 
    
    This small **330M parameter** model powerful OCR model can handle various text recognition tasks with high accuracy.
    
    ### Model Information
    - **Model Name**: GOT-OCR 2.0
    - **Hugging Face Repository**: [ucaslcl/GOT-OCR2_0](https://huggingface.co/ucaslcl/GOT-OCR2_0)
    - **Environment**: CUDA 11.8 + PyTorch 2.0.1
                """)
    
    task_dropdown.change(
        update_inputs,
        inputs=[task_dropdown],
        outputs=[ocr_type_dropdown, ocr_box_input, ocr_color_dropdown, render_checkbox]
    )
    
    submit_button.click(
        ocr_demo,
        inputs=[image_input, task_dropdown, ocr_type_dropdown, ocr_box_input, ocr_color_dropdown],
        outputs=[output_text, output_html]
    )

if __name__ == "__main__":
    demo.launch()