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6. Image Rotation

6.1. Image rotation

cv2.getRotationMatrix2D(center, angle, scale)

Parameter explanation:

center: the center point of rotation

angle: the angle of rotation. Positive numbers are counterclockwise; negative numbers are clockwise.

scale: transformation scale (scaling). 1 means no change, less than 1 means shrinking, and greater than 1 means enlarging.

6.2. Actual effect display

Code path:

/home/pi/Rider-pi_class/4.Open Source CV/B.Geometric_Transformations/06_Image_Rotation.ipynb

import cv2
import numpy as np
img = cv2.imread('yahboom.jpg',1)
#cv2.imshow('src',img)
 Affine Transformation
Perspective Transformation