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from PIL import Image
import pytesseract
import gradio as gr
from datetime import datetime
import os
from flair.data import Sentence
from flair.models import SequenceTagger
from segtok.segmenter import split_single
import pandas as pd
# tagger = SequenceTagger.load("ner-ontonotes")
tagger = SequenceTagger.load("flair/ner-english-ontonotes")
langs = []
choices = os.popen("tesseract --list-langs").read().split("\n")[1:-1]
blocks = gr.Blocks()
def get_named_entities(ocr_text: str):
sentence = [Sentence(sent, use_tokenizer=True) for sent in split_single(ocr_text)]
tagger.predict(sentence)
entities = []
for token in sentence:
for entity in token.get_spans("ner"):
entity = str(entity)
entities.append(entity)
entities = "\n".join(entities)
return entities
def run(image, lang="eng"):
result = pytesseract.image_to_string(image, lang=None if lang == [] else lang)
ner = get_named_entities(result)
return result, ner
def download_output(ocr_text: str, named_entities: str, image_name="ocr_ner_output"):
try:
named_entities_list = named_entities.split("\n")
now = datetime.now()
datetime_now = now.strftime("%Y%m%d_%H%M%S")
output_file = f"{image_name}_{datetime_now}.xlsx"
ocr_df = pd.Series(ocr_text)
ner_df = pd.Series(named_entities_list)
with pd.ExcelWriter(output_file, engine="xlsxwriter") as writer:
ocr_df.to_excel(writer, sheet_name="OCR text")
ner_df.to_excel(writer, sheet_name="Named entities")
return output_file
except Exception as e:
raise gr.Error(f"Something went wrong: here's the error: {e}")
with gr.Blocks() as demo:
gr.Markdown("## Theatre Programmer")
with gr.Row():
with gr.Column():
image_in = gr.Image(type="pil", mirror_webcam=False)
lang = gr.Dropdown(choices, value="eng", label="Select language")
btn = gr.Button("Run")
with gr.Column():
ocr_text = gr.TextArea(label="OCR output")
with gr.Column():
ner = gr.TextArea(label="Named entities")
# with gr.Column():
# gr.CheckboxGroup(ner, label="Named entities")
with gr.Row():
download_btn = gr.Button("Download output")
btn.click(fn=run, inputs=[image_in, lang], outputs=[ocr_text, ner])
download_btn.click(
fn=download_output,
inputs=[ocr_text, ner],
outputs=[gr.components.File()],
)
demo.launch()
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