How can I implement change detection in Python?

How can I implement change detection in Python?

You can implement change detection in Python using libraries like OpenCV for image processing or by comparing data structures. What specific type of change detection are you interested in?

I'm interested in detecting changes in images.

For image change detection, you can use OpenCV's cv2.absdiff() function to find differences between two images. Would you like a code example?

Yes, please provide a code example.

Here's a simple example:

import cv2

# Load the two images
image1 = cv2.imread('image1.jpg')
image2 = cv2.imread('image2.jpg')

# Compute the absolute difference
difference = cv2.absdiff(image1, image2)

# Convert to grayscale and apply thresholding
gray = cv2.cvtColor(difference, cv2.COLOR_BGR2GRAY)
_, thresh = cv2.threshold(gray, 30, 255, cv2.THRESH_BINARY)

# Show the result
cv2.imshow('Difference', thresh)
cv2.waitKey(0)
cv2.destroyAllWindows()

This will highlight the changes between the two images.

That looks great! How can I improve the accuracy of change detection?

To improve accuracy, consider using techniques like image preprocessing (e.g., blurring), adjusting the threshold value, or employing more advanced methods like background subtraction or machine learning models.