platedetection / app.py
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Create app.py
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import streamlit as st
import cv2
import numpy as np
# Import your chosen deep learning framework (TensorFlow or PyTorch)
# ...
import tensorflow
# Load the pre-trained object detection model
model = cv2.dnn_DetectionModel("path/to/model.weights", "path/to/model.cfg")
model.setInputParams(size=(416, 416), scale=1/255)
# Optional: Load EasyOCR model if using
reader = EasyOCR("en") # Change "en" to your desired language code
def detect_plates(image):
# Preprocess image for model input (resizing, normalization, etc.)
# ...
classes, confidences, boxes = model.detect(image)
for (class_id, confidence, box) in zip(classes.flatten(), confidences.flatten(), boxes):
if class_id == (class_index for class_index in range(len(model.names)) if model.names[class_index] == "license_plate"): # Adjust class index based on your model
x_min, y_min, x_max, y_max = box
plate_roi = image[y_min:y_max, x_min:x_max]
# Perform character recognition (if not using EasyOCR, implement your own)
plate_text = "..."
if reader is not None:
result = reader.readtext(plate_roi)
plate_text = result[0][1]
# Display bounding box and plate text (or confidence score if not using OCR)
cv2.rectangle(image, (x_min, y_min), (x_max, y_max), (255, 0, 0), 2)
if reader is not None:
cv2.putText(image, plate_text, (x_min, y_min - 5), cv2.FONT_HERSHEY_SIMPLEX, 0.8, (255, 0, 0), 2)
else:
cv2.putText(image, f"Confidence: {confidence:.2f}", (x_min, y_min - 5), cv2.FONT_HERSHEY_SIMPLEX, 0.8, (255, 0, 0), 2)
return image
def main():
"""Streamlit app"""
st.title("Number Plate Detection App")
uploaded_file = st.file_uploader("Choose an image", type=["jpg", "jpeg", "png"])
if uploaded_file is not None:
image = cv2.imdecode(np.fromstring(uploaded_file.read(), np.uint8), cv2.IMREAD_COLOR)
results = detect_plates