Create app.py

app.py

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+import gradio as gr
+from transformers import AutoProcessor, AutoModelForCausalLM
+import spaces
+
+import requests
+import copy
+
+from PIL import Image, ImageDraw, ImageFont 
+import io
+import matplotlib.pyplot as plt
+import matplotlib.patches as patches
+
+import random
+import numpy as np
+
+import subprocess
+subprocess.run('pip install flash-attn --no-build-isolation', env={'FLASH_ATTENTION_SKIP_CUDA_BUILD': "TRUE"}, shell=True)
+
+models = {
+    'microsoft/Florence-2-large-ft': AutoModelForCausalLM.from_pretrained('microsoft/Florence-2-large-ft', trust_remote_code=True).to("cuda").eval(),
+    'microsoft/Florence-2-large': AutoModelForCausalLM.from_pretrained('microsoft/Florence-2-large', trust_remote_code=True).to("cuda").eval(),
+    'microsoft/Florence-2-base-ft': AutoModelForCausalLM.from_pretrained('microsoft/Florence-2-base-ft', trust_remote_code=True).to("cuda").eval(),
+    'microsoft/Florence-2-base': AutoModelForCausalLM.from_pretrained('microsoft/Florence-2-base', trust_remote_code=True).to("cuda").eval(),
+}
+
+processors = {
+    'microsoft/Florence-2-large-ft': AutoProcessor.from_pretrained('microsoft/Florence-2-large-ft', trust_remote_code=True),
+    'microsoft/Florence-2-large': AutoProcessor.from_pretrained('microsoft/Florence-2-large', trust_remote_code=True),
+    'microsoft/Florence-2-base-ft': AutoProcessor.from_pretrained('microsoft/Florence-2-base-ft', trust_remote_code=True),
+    'microsoft/Florence-2-base': AutoProcessor.from_pretrained('microsoft/Florence-2-base', trust_remote_code=True),
+}
+
+
+DESCRIPTION = "# [Handwriting Reader with 'Large Vision Model'](https://huggingface.co/microsoft/Florence-2-large)"
+
+colormap = ['blue','orange','green','purple','brown','pink','gray','olive','cyan','red',
+            'lime','indigo','violet','aqua','magenta','coral','gold','tan','skyblue']
+
+def fig_to_pil(fig):
+    buf = io.BytesIO()
+    fig.savefig(buf, format='png')
+    buf.seek(0)
+    return Image.open(buf)
+
+@spaces.GPU
+def run_example(task_prompt, image, text_input=None, model_id='microsoft/Florence-2-large'):
+    model = models[model_id]
+    processor = processors[model_id]
+    if text_input is None:
+        prompt = task_prompt
+    else:
+        prompt = task_prompt + text_input
+    inputs = processor(text=prompt, images=image, return_tensors="pt").to("cuda")
+    generated_ids = model.generate(
+        input_ids=inputs["input_ids"],
+        pixel_values=inputs["pixel_values"],
+        max_new_tokens=1024,
+        early_stopping=False,
+        do_sample=False,
+        num_beams=3,
+    )
+    generated_text = processor.batch_decode(generated_ids, skip_special_tokens=False)[0]
+    parsed_answer = processor.post_process_generation(
+        generated_text,
+        task=task_prompt,
+        image_size=(image.width, image.height)
+    )
+    return parsed_answer
+
+def plot_bbox(image, data):
+    fig, ax = plt.subplots()
+    ax.imshow(image)
+    for bbox, label in zip(data['bboxes'], data['labels']):
+        x1, y1, x2, y2 = bbox
+        rect = patches.Rectangle((x1, y1), x2-x1, y2-y1, linewidth=1, edgecolor='r', facecolor='none')
+        ax.add_patch(rect)
+        plt.text(x1, y1, label, color='white', fontsize=8, bbox=dict(facecolor='red', alpha=0.5))
+    ax.axis('off')
+    return fig
+
+def draw_polygons(image, prediction, fill_mask=False):
+    draw = ImageDraw.Draw(image)
+    scale = 1
+    for polygons, label in zip(prediction['polygons'], prediction['labels']):
+        color = random.choice(colormap)
+        fill_color = random.choice(colormap) if fill_mask else None
+        for _polygon in polygons:
+            _polygon = np.array(_polygon).reshape(-1, 2)
+            if len(_polygon) < 3:
+                print('Invalid polygon:', _polygon)
+                continue
+            _polygon = (_polygon * scale).reshape(-1).tolist()
+            if fill_mask:
+                draw.polygon(_polygon, outline=color, fill=fill_color)
+            else:
+                draw.polygon(_polygon, outline=color)
+            draw.text((_polygon[0] + 8, _polygon[1] + 2), label, fill=color)
+    return image
+
+def convert_to_od_format(data):
+    bboxes = data.get('bboxes', [])
+    labels = data.get('bboxes_labels', [])
+    od_results = {
+        'bboxes': bboxes,
+        'labels': labels
+    }
+    return od_results
+
+def draw_ocr_bboxes(image, prediction):
+    scale = 1
+    draw = ImageDraw.Draw(image)
+    bboxes, labels = prediction['quad_boxes'], prediction['labels']
+    for box, label in zip(bboxes, labels):
+        color = random.choice(colormap)
+        new_box = (np.array(box) * scale).tolist()
+        draw.polygon(new_box, width=3, outline=color)
+        draw.text((new_box[0]+8, new_box[1]+2),
+                  "{}".format(label),
+                  align="right",
+                  fill=color)
+    return image
+
+def process_image(image, task_prompt, text_input=None, model_id='microsoft/Florence-2-large'):
+    image = Image.fromarray(image)  # Convert NumPy array to PIL Image
+    if task_prompt == 'OCR':
+        task_prompt = '<OCR>'
+        results = run_example(task_prompt, image, model_id=model_id)
+        return results, None
+    elif task_prompt == 'OCR with Region':
+        task_prompt = '<OCR_WITH_REGION>'
+        results = run_example(task_prompt, image, model_id=model_id)
+        output_image = copy.deepcopy(image)
+        output_image = draw_ocr_bboxes(output_image, results['<OCR_WITH_REGION>'])
+        return results, output_image
+    else:
+        return "", None  # Return empty string and None for unknown task prompts
+
+css = """
+  #output {
+    height: 500px; 
+    overflow: auto; 
+    border: 1px solid #ccc; 
+  }
+"""
+
+
+single_task_list =['OCR', 'OCR with Region']
+
+cascased_task_list =[
+    'Caption + Grounding', 'Detailed Caption + Grounding', 'More Detailed Caption + Grounding'
+]
+
+
+def update_task_dropdown(choice):
+    if choice == 'Cascased task':
+        return gr.Dropdown(choices=cascased_task_list, value='Caption + Grounding')
+    else:
+        return gr.Dropdown(choices=single_task_list, value='Caption')
+
+
+
+with gr.Blocks(css=css) as demo:
+    gr.Markdown(DESCRIPTION)
+    with gr.Tab(label="Handwriting Reader with LVM"):
+        with gr.Row():
+            with gr.Column():
+                input_img = gr.Image(label="Input Picture")
+                model_selector = gr.Dropdown(choices=list(models.keys()), label="Model", value='microsoft/Florence-2-large')
+                task_type = gr.Radio(choices=['Single task', 'Cascased task'], label='Task type selector', value='Single task')
+                task_prompt = gr.Dropdown(choices=single_task_list, label="Task Prompt", value="Caption")
+                task_type.change(fn=update_task_dropdown, inputs=task_type, outputs=task_prompt)
+                text_input = gr.Textbox(label="Text Input (optional)")
+                submit_btn = gr.Button(value="Submit")
+            with gr.Column():
+                output_text = gr.Textbox(label="Output Text")
+                output_img = gr.Image(label="Output Image")
+
+        gr.Examples(
+            examples=[
+                ["hw_pic_1.jpg", 'OCR'],
+                ["hw_pic_2.jpg", 'OCR'],
+                ["hw_pic_3.jpg", 'OCR'],
+                ["hw_pic_4.jpg", 'OCR'],
+                ["hw_pic_5.jpg", 'OCR']
+            ],
+            inputs=[input_img, task_prompt],
+            outputs=[output_text, output_img],
+            fn=process_image,
+            cache_examples=True,
+            label='Try examples'
+        )
+
+        submit_btn.click(process_image, [input_img, task_prompt, text_input, model_selector], [output_text, output_img])
+
+demo.launch(debug=True)