vstack

NumPy 배열 병합 : 영상 붙이기

1. numpy.vstack numpy.vstack(tup) : Stack arrays in sequence vertically (rowwise) axis 0로 ndarray들을 붙임 2d image라면 위아래로 붙여지게 됨. Simple example import numpy as np a = np.ones((4,3)) b = np.zeros((4,3)) np.vstack( (a,b) ) Image example import cv2 import matplotlib.pyplot as plt img = cv2.imread('../../images/lena.png') stacked_img = np.vstack((img,img)) plt.imshow(stacked_img[:,:,::-1]) plt.show() ..