[FIXED] Identifying rectangular ducts and their inside information using Python

Issue

Click to see floor plan image:

I'm a mechanical engineer and new to programming.

I want to identify the different color rectangular ducts and information enclosed in them.

Any help would be greatly appreciated.

I've tried extracting the text using tesseract.

Solution

Here is first simple script that extracts vector graphics having a non-black border and any text inside them.

import fitz  # PyMuPDF
doc = fitz.open("input.pdf")
page = doc[0]  # first page (0-based numbering scheme)
paths = page.get_drawings()  # extract all vector graphics (list of dictionaries)
for path in paths:
    if path["color"] is None or path["color"] == (0,0,0)
        # ignore borderless graphics and black border
        continue
    print(f"border color {p['color']}")
    text = page.get_text(clip=path["rect"])  # extract any text inside
    print(f"text inside {p['rect']: {text}")

Note: I am a maintainer and the original creator of PyMuPDF.

Answered By - Jorj McKie