app.py

import gradio as gr
from ultralytics import YOLO
import numpy as np
from PIL import Image, ImageDraw, ImageFilter, ImageOps
import torchvision.transforms
import torch

transform = torchvision.transforms.ToPILImage()
seg_model = YOLO("yolov8m-seg.pt")
lp_model = YOLO("yolov8m_lp.pt")

def detect_person(image: Image):
    result = seg_model(image, device="CPU")[0]
    masks = result.masks.data
    clss = result.boxes.cls
    person_indices = torch.where(clss == 0)
    person_masks = masks[person_indices]
    people_mask = torch.any(person_masks, dim=0).to(torch.uint8) * 255
    mask = transform(~people_mask)
    mask = mask.resize((image.width, image.height), resample=Image.Resampling.BILINEAR)
    return mask

def detect_license_plate(image: Image):
    result = lp_model(image, imgsz=(image.height, image.width), device="cpu")[0]
    boxes = result.boxes.data[:, :4]
    mask = Image.new(mode="L", size=image.size, color=255)
    draw = ImageDraw.Draw(mask)
    for box in boxes:
        draw.rectangle(list(box), fill=0)
    return mask


def detect_dummy(image: Image):
    return Image.new(mode="L", size=image.size, color=255)


detectors = {
    "Person": detect_person,
    "License Plate": detect_license_plate
}

def test_gradio(image):
    masks = [detect_person(image), detect_license_plate(image)]
    combined = np.minimum.reduce([np.array(m) for m in masks])
    mask = Image.fromarray(combined)
    # Apply blur through mask
    blurred = image.filter(ImageFilter.GaussianBlur(30))
    anonymized = Image.composite(image, blurred, mask)
    ## TODO: Tempfile statt einem generischen File
    anonymized.save("anon.JPG")
    return "anon.JPG"

# demo_live = gr.Interface(
#     fn=test_gradio, 
#     inputs=gr.Image(source="webcam", type="pil", shape=(640, 480)), 
#     outputs=gr.Image(type="pil")
# )

demo_upload = gr.Interface(
    fn=test_gradio, 
    inputs=gr.Image(type="pil"), 
    outputs=gr.Image()
)

# demo = gr.TabbedInterface(
#     interface_list=[demo_live, demo_upload], 
#     tab_names=["Webcam", "Bild hochladen"], 
#     title="Image Anonymizer"
# )

# print(__name__)
# demo_upload.launch(server_name="localhost", server_port=8080)
# demo.launch(server_name="localhost", server_port=8080)

demo_upload.launch()