1. OpenCV Basics

1. Images as Matrices

An image is just a NumPy array of shape (H, W, 3).

python
import cv2
img = cv2.imread("cat.jpg")
print(img.shape) # (1080, 1920, 3) BGR

2. Processing

• Blur: cv2.GaussianBlur() (Noise reduction)
• Edges: cv2.Canny() (Finding boundaries)