Python把多张图拼接在一起_怎么用np.concatenate()拼接图片-优快云博客

本文介绍了一种使用Python和OpenCV库进行图片拼接的方法，通过concatenate函数实现三张图片的无缝拼接，并详细展示了如何在拼接的图片间添加白色分割线以增强视觉效果。

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用到的函数是concatenate，具体代码如下：

import os

import numpy as np

import cv2

img_fold_A = './original'

img_fold_B = './gt'

img_fold_C = './prediction'

img_fold_ABC = './combination'

img_list1 = os.listdir('./original')

img_list2 = os.listdir('./gt')

img_list3 = os.listdir('./prediction')

num_imgs = len(img_list1)

for n in range(num_imgs):

name_A = img_list1[n]

name_B = img_list2[n]

name_C = img_list3[n]

path_A = os.path.join(img_fold_A, name_A)

path_B = os.path.join(img_fold_B, name_B)

path_C = os.path.join(img_fold_C, name_C)

path_AB = os.path.join(img_fold_ABC, name_A)

im_A = cv2.imread(path_A, 1) # python2: cv2.CV_LOAD_IMAGE_COLOR; python3: cv2.IMREAD_COLOR

im_B = cv2.imread(path_B, 1) # python2: cv2.CV_LOAD_IMAGE_COLOR; python3: cv2.IMREAD_COLOR

im_C = cv2.imread(path_C, 1) # python2: cv2.CV_LOAD_IMAGE_COLOR; python3: cv2.IMREAD_COLOR

im_AB = np.concatenate([im_A, im_B], 1)

im_ABC = np.concatenate([im_AB, im_C], 1)

cv2.imwrite(path_AB, im_ABC)

这里实现了把3张图片无缝拼接在一起。

如何在这三张图中间接入分割线呢？代码如下：

在im_C = cv2.imread(path_C, 1) 这一句后插入这一段代码即可：

cut1 = np.ones((1024,20,3),dtype = 'u8')*255

im_A1 = np.concatenate([im_A, cut1], 1)

im_AB = np.concatenate([im_A1, im_B], 1)

im_AB1 = np.concatenate([im_AB, cut1], 1)

im_ABC = np.concatenate([im_AB1, im_C], 1)

即可。