Python - Transformaciones geométricas básicas

import skimage.io as io

import numpy as np

import matplotlib.pyplot as plt

from skimage import data

from skimage import transform as tf

import cv2

a = np.ones ((50,50))

b = np.zeros ((50,50))

c = np.block ([[b,b,b,b],[b,a,a,b],[b,a,a,b],[b,b,b,b]])

plt.imshow (c, cmap = 'gray')

d = cv2.getRotationMatrix2D ((100,100),30,1) --> El 30 son los grados que queremos que gire

e = cv2.warpAffine(c,d,(200,200),cv2.INTER_NEAREST)

plt.imshow (e, cmap = 'gray')

import cv2

import numpy as np

import matplotlib.pyplot as plt

img = plt.imread('side-man.jpg')

plt.imshow(img)

plt.subplot (121)

plt.imshow (img)

plt.subplot (122)

plt.imshow (img)

print (img.shape)

a = cv2.flip(img,-1) -->cambiamos el -1 por 1 ó 0 para ir girando la imagen

plt.imshow(a)