draw_bbox.py

from magic_pdf.libs.commons import fitz  # PyMuPDF
from magic_pdf.libs.ocr_content_type import ContentType, BlockType


def draw_bbox_without_number(i, bbox_list, page, rgb_config, fill_config):
    new_rgb = []
    for item in rgb_config:
        item = float(item) / 255
        new_rgb.append(item)
    page_data = bbox_list[i]
    for bbox in page_data:
        x0, y0, x1, y1 = bbox
        rect_coords = fitz.Rect(x0, y0, x1, y1)  # Define the rectangle
        if fill_config:
            page.draw_rect(rect_coords, color=None, fill=new_rgb, fill_opacity=0.3, width=0.5, overlay=True)  # Draw the rectangle
        else:
            page.draw_rect(rect_coords, color=new_rgb, fill=None, fill_opacity=1, width=0.5, overlay=True)  # Draw the rectangle


def draw_bbox_with_number(i, bbox_list, page, rgb_config, fill_config):
    new_rgb = []
    for item in rgb_config:
        item = float(item) / 255
        new_rgb.append(item)
    page_data = bbox_list[i]
    for j, bbox in enumerate(page_data):
        x0, y0, x1, y1 = bbox
        rect_coords = fitz.Rect(x0, y0, x1, y1)  # Define the rectangle
        if fill_config:
            page.draw_rect(rect_coords, color=None, fill=new_rgb, fill_opacity=0.3, width=0.5, overlay=True)  # Draw the rectangle
        else:
            page.draw_rect(rect_coords, color=new_rgb, fill=None, fill_opacity=1, width=0.5, overlay=True)  # Draw the rectangle
        page.insert_text((x0, y0+10), str(j + 1), fontsize=10, color=new_rgb)  # Insert the index at the top left corner of the rectangle


def draw_layout_bbox(pdf_info, pdf_bytes, out_path):
    layout_bbox_list = []
    blocks_bbox_list = []
    dropped_bbox_list = []
    for page in pdf_info:
        page_layout_list = []
        page_dropped_list = []
        page_blocks_bbox_list = []
        for layout in page['layout_bboxes']:
            page_layout_list.append(layout['layout_bbox'])
        layout_bbox_list.append(page_layout_list)
        for dropped_bbox in page['discarded_blocks']:
            page_dropped_list.append(dropped_bbox['bbox'])
        dropped_bbox_list.append(page_dropped_list)
        for block in page['para_blocks']:
            page_blocks_bbox_list.append(block['bbox'])
        blocks_bbox_list.append(page_blocks_bbox_list)
    pdf_docs = fitz.open("pdf", pdf_bytes)
    for i, page in enumerate(pdf_docs):
        draw_bbox_with_number(i, layout_bbox_list, page, [255, 0, 0], False)
        draw_bbox_without_number(i, dropped_bbox_list, page, [0, 255, 0], True)
        draw_bbox_without_number(i, blocks_bbox_list, page, [0, 0, 255], True)
    # Save the PDF
    pdf_docs.save(f"{out_path}/layout.pdf")

def draw_span_bbox(pdf_info, pdf_bytes, out_path):
    text_list = []
    inline_equation_list = []
    interline_equation_list = []
    image_list = []
    table_list = []
    for page in pdf_info:
        page_text_list = []
        page_inline_equation_list = []
        page_interline_equation_list = []
        page_image_list = []
        page_table_list = []
        for block in page['para_blocks']:
            if block['type'] in [BlockType.Text, BlockType.Title, BlockType.InterlineEquation]:
                for line in block['lines']:
                    for span in line['spans']:
                        if span['type'] == ContentType.Text:
                            page_text_list.append(span['bbox'])
                        elif span['type'] == ContentType.InlineEquation:
                            page_inline_equation_list.append(span['bbox'])
                        elif span['type'] == ContentType.InterlineEquation:
                            page_interline_equation_list.append(span['bbox'])
                        elif span['type'] == ContentType.Image:
                            page_image_list.append(span['bbox'])
                        elif span['type'] == ContentType.Table:
                            page_table_list.append(span['bbox'])
            elif block['type'] in [BlockType.Image, BlockType.Table]:
                for sub_block in block["blocks"]:
                    for line in sub_block['lines']:
                        for span in line['spans']:
                            if span['type'] == ContentType.Text:
                                page_text_list.append(span['bbox'])
                            elif span['type'] == ContentType.InlineEquation:
                                page_inline_equation_list.append(span['bbox'])
                            elif span['type'] == ContentType.InterlineEquation:
                                page_interline_equation_list.append(span['bbox'])
                            elif span['type'] == ContentType.Image:
                                page_image_list.append(span['bbox'])
                            elif span['type'] == ContentType.Table:
                                page_table_list.append(span['bbox'])
        text_list.append(page_text_list)
        inline_equation_list.append(page_inline_equation_list)
        interline_equation_list.append(page_interline_equation_list)
        image_list.append(page_image_list)
        table_list.append(page_table_list)
    pdf_docs = fitz.open("pdf", pdf_bytes)
    for i, page in enumerate(pdf_docs):
        # 获取当前页面的数据
        draw_bbox_without_number(i, text_list, page, [255, 0, 0], False)
        draw_bbox_without_number(i, inline_equation_list, page, [0, 255, 0], False)
        draw_bbox_without_number(i, interline_equation_list, page, [0, 0, 255], False)
        draw_bbox_without_number(i, image_list, page, [255, 204, 0], False)
        draw_bbox_without_number(i, table_list, page, [204, 0, 255], False)

    # Save the PDF
    pdf_docs.save(f"{out_path}/spans.pdf")