OpenCV-Python系列·第六集-1：剛體變換、仿射變換

剛體變換：長度、角度、形狀、基本結構保持不變。

仿射變換：直線保持不變。

# -*- coding: utf-8 -*-
"""
Created on Fri Aug 24 17:14:56 2018

@author: Miracle
"""
import cv2
import numpy as np

image = cv2.imread('../data/lena.jpg')
rows,cols,channel = image.shape
#對應點
src_points = np.float32([[0,0],[cols-1,0],[0,rows-1]])
dst_points = np.float32([[0,0],[int(0.6*(cols-1)),0],
                         [int(0.4*(cols-1)),rows-1]])
#6參數。三個點計算放射矩陣。
affine_matrix = cv2.getAffineTransform(src_points,dst_points)
affine_image = cv2.warpAffine(image,affine_matrix,(cols,rows))

cv2.imshow('Original Image',image)
cv2.imshow('Affine Image',affine_image)

cv2.waitKey()