| import traceback | |
| import gradio as gr | |
| from utils.get_RGB_image import get_RGB_image, is_online_file, steam_online_file | |
| from pdf2image import convert_from_path, convert_from_bytes | |
| import layoutparser as lp | |
| from PIL import Image | |
| from utils.get_features import get_features | |
| from imagehash import average_hash | |
| from sklearn.metrics.pairwise import cosine_similarity | |
| from utils.visualize_bboxes_on_image import visualize_bboxes_on_image | |
| label_map = {0: 'Caption', 1: 'Footnote', 2: 'Formula', 3: 'List-item', 4: 'Page-footer', 5: 'Page-header', 6: 'Picture', 7: 'Section-header', 8: 'Table', 9: 'Text', 10: 'Title'} | |
| label_names = list(label_map.values()) | |
| color_map = {'Caption': '#acc2d9', 'Footnote': '#56ae57', 'Formula': '#b2996e', 'List-item': '#a8ff04', 'Page-footer': '#69d84f', 'Page-header': '#894585', 'Picture': '#70b23f', 'Section-header': '#d4ffff', 'Table': '#65ab7c', 'Text': '#952e8f', 'Title': '#fcfc81'} | |
| cache = { | |
| 'output_document_image_1_hash': None, | |
| 'output_document_image_2_hash': None, | |
| 'document_image_1_features': None, | |
| 'document_image_2_features': None, | |
| 'original_document_image_1': None, | |
| 'original_document_image_2': None | |
| } | |
| pre_message_style = 'overflow:auto;border:2px solid pink;padding:4px;border-radius:4px;' | |
| visualize_bboxes_on_image_kwargs = { | |
| 'label_text_color': 'white', | |
| 'label_fill_color': 'black', | |
| 'label_text_size': 12, | |
| 'label_text_padding': 3, | |
| 'label_rectangle_left_margin': 0, | |
| 'label_rectangle_top_margin': 0 | |
| } | |
| vectors_types = ['vectors', 'weighted_vectors', 'reduced_vectors', 'weighted_reduced_vectors'] | |
| def similarity_fn(model: lp.Detectron2LayoutModel, document_image_1: Image.Image, document_image_2: Image.Image, vectors_type: str): | |
| message = None | |
| annotations = { | |
| 'predicted_bboxes': 'predicted_bboxes' if vectors_type in ['vectors', 'weighted_vectors'] else 'reduced_predicted_bboxes', | |
| 'predicted_scores': 'predicted_scores' if vectors_type in ['vectors', 'weighted_vectors'] else 'reduced_predicted_scores', | |
| 'predicted_labels': 'predicted_labels' if vectors_type in ['vectors', 'weighted_vectors'] else 'reduced_predicted_labels', | |
| } | |
| show_vectors_type = False | |
| try: | |
| if document_image_1 is None or document_image_2 is None: | |
| message = f'<pre style="{pre_message_style}">Please load both the documents to compare.<pre>' | |
| else: | |
| input_document_image_1_hash = str(average_hash(document_image_1)) | |
| input_document_image_2_hash = str(average_hash(document_image_2)) | |
| if input_document_image_1_hash == cache['output_document_image_1_hash']: | |
| document_image_1_features = cache['document_image_1_features'] | |
| document_image_1 = cache['original_document_image_1'] | |
| else: | |
| document_image_1_features = get_features(document_image_1, model, label_names) | |
| cache['document_image_1_features'] = document_image_1_features | |
| cache['original_document_image_1'] = document_image_1 | |
| if input_document_image_2_hash == cache['output_document_image_2_hash']: | |
| document_image_2_features = cache['document_image_2_features'] | |
| document_image_2 = cache['original_document_image_2'] | |
| else: | |
| document_image_2_features = get_features(document_image_2, model, label_names) | |
| cache['document_image_2_features'] = document_image_2_features | |
| cache['original_document_image_2'] = document_image_2 | |
| [[similarity]] = cosine_similarity( | |
| [ | |
| cache['document_image_1_features'][vectors_type] | |
| ], | |
| [ | |
| cache['document_image_2_features'][vectors_type] | |
| ]) | |
| message = f'<pre style="{pre_message_style}">Similarity between the two documents is: {round(similarity, 4)}<pre>' | |
| document_image_1 = visualize_bboxes_on_image( | |
| image = document_image_1, | |
| bboxes = cache['document_image_1_features'][annotations['predicted_bboxes']], | |
| labels = [f'{label}, score:{round(score, 2)}' for label, score in zip( | |
| cache['document_image_1_features'][annotations['predicted_labels']], | |
| cache['document_image_1_features'][annotations['predicted_scores']])], | |
| bbox_outline_color = [color_map[label] for label in cache['document_image_1_features'][annotations['predicted_labels']]], | |
| **visualize_bboxes_on_image_kwargs) | |
| document_image_2 = visualize_bboxes_on_image( | |
| image = document_image_2, | |
| bboxes = cache['document_image_2_features'][annotations['predicted_bboxes']], | |
| labels = [f'{label}, score:{score}' for label, score in zip( | |
| cache['document_image_2_features'][annotations['predicted_labels']], | |
| cache['document_image_2_features'][annotations['predicted_scores']])], | |
| bbox_outline_color = [color_map[label] for label in cache['document_image_2_features'][annotations['predicted_labels']]], | |
| **visualize_bboxes_on_image_kwargs) | |
| cache['output_document_image_1_hash'] = str(average_hash(document_image_1)) | |
| cache['output_document_image_2_hash'] = str(average_hash(document_image_2)) | |
| show_vectors_type = True | |
| except Exception as e: | |
| message = f'<pre style="{pre_message_style}">{traceback.format_exc()}<pre>' | |
| return [ | |
| gr.HTML(message, visible=True), | |
| document_image_1, | |
| document_image_2, | |
| gr.Dropdown(visible=show_vectors_type) | |
| ] | |
| def load_image(filename, page = 0): | |
| try: | |
| image = None | |
| try: | |
| if (is_online_file(filename)): | |
| image = get_RGB_image(convert_from_bytes(steam_online_file(filename))[page]) | |
| else: | |
| image = get_RGB_image(convert_from_path(filename)[page]) | |
| except: | |
| image = get_RGB_image(filename) | |
| return [ | |
| gr.Image(value=image, visible=True), | |
| None | |
| ] | |
| except: | |
| error = traceback.format_exc() | |
| return [None, gr.HTML(value=error, visible=True)] | |
| def preview_url(url, page = 0): | |
| [image, error] = load_image(url, page = page) | |
| if image: | |
| return [gr.Tabs(selected=0), image, error] | |
| else: | |
| return [gr.Tabs(selected=1), image, error] | |
| def document_view(document_number: int): | |
| gr.HTML(value=f'<h4>Load the {"first" if document_number == 1 else "second"} PDF or Document Image<h4>', elem_classes=['center']) | |
| with gr.Tabs() as document_tabs: | |
| with gr.Tab("From Image", id=0): | |
| document = gr.Image(type="pil", label=f"Document {document_number}", visible=False, interactive=False, show_download_button=True) | |
| document_error_message = gr.HTML(label="Error Message", visible=False) | |
| document_preview = gr.UploadButton( | |
| "Upload PDF or Document Image", | |
| file_types=["image", ".pdf"], | |
| file_count="single") | |
| with gr.Tab("From URL", id=1): | |
| document_url = gr.Textbox( | |
| label=f"Document {document_number} URL", | |
| info="Paste a Link/URL to PDF or Document Image", | |
| placeholder="https://datasets-server.huggingface.co/.../image.jpg") | |
| document_url_error_message = gr.HTML(label="Error Message", visible=False) | |
| document_url_preview = gr.Button(value="Preview", variant="primary") | |
| document_preview.upload( | |
| fn = lambda file: load_image(file.name), | |
| inputs = [document_preview], | |
| outputs = [document, document_error_message]) | |
| document_url_preview.click( | |
| fn = preview_url, | |
| inputs = [document_url], | |
| outputs = [document_tabs, document, document_url_error_message]) | |
| return document | |
| def app(*, model_path, config_path, debug = False): | |
| model: lp.Detectron2LayoutModel = lp.Detectron2LayoutModel( | |
| config_path = config_path, | |
| model_path = model_path, | |
| label_map = label_map) | |
| title = 'Document Similarity Search Using Visual Layout Features' | |
| description = f"<h2>{title}<h2>" | |
| css = ''' | |
| image { max-height="86vh" !important; } | |
| .center { display: flex; flex: 1 1 auto; align-items: center; align-content: center; justify-content: center; justify-items: center; } | |
| .hr { width: 100%; display: block; padding: 0; margin: 0; background: gray; height: 4px; border: none; } | |
| ''' | |
| with gr.Blocks(title=title, css=css) as app: | |
| with gr.Row(): | |
| gr.HTML(value=description, elem_classes=['center']) | |
| with gr.Row(equal_height = False): | |
| with gr.Column(): | |
| document_1_image = document_view(1) | |
| with gr.Column(): | |
| document_2_image = document_view(2) | |
| gr.HTML('<hr/>', elem_classes=['hr']) | |
| with gr.Row(elem_classes=['center']): | |
| with gr.Column(): | |
| submit = gr.Button(value="Get Similarity", variant="primary") | |
| with gr.Column(): | |
| vectors_type = gr.Dropdown( | |
| choices = vectors_types, | |
| value = vectors_types[0], | |
| visible = False, | |
| label = "Vectors Type", | |
| info = "Select the Vectors Type to use for Similarity Calculation") | |
| similarity_output = gr.HTML(label="Similarity Score", visible=False) | |
| reset = gr.Button(value="Reset", variant="secondary") | |
| kwargs = { | |
| 'fn': lambda document_1_image, document_2_image, vectors_type: similarity_fn( | |
| model, | |
| document_1_image, | |
| document_2_image, | |
| vectors_type), | |
| 'inputs': [document_1_image, document_2_image, vectors_type], | |
| 'outputs': [similarity_output, document_1_image, document_2_image, vectors_type] | |
| } | |
| submit.click(**kwargs) | |
| vectors_type.change(**kwargs) | |
| return app.launch(debug=debug) |