向图像添加填充以使它们具有相同的形状 [英] Add padding to images to get them into the same shape

问题描述

我有一组不同尺寸的图片(45,50,3), (69,34,3), (34,98,3).我想为这些图像添加填充，如下所示:

l have a set of images of different sizes (45,50,3), (69,34,3), (34,98,3). l want to add padding to these images as follows:

取整张图片的最大宽度和长度，然后把图片放在那个尺寸

Take the max width and length of the whole images then put the image in that size

import os
import glob
import cv2

input_path="/home/images"
os.chdir(indput_path)
images=glob.glob("*.png")
Length=[]
Width=[]
for img in images:
    img=cv2.imread(img)
    width,length=img.shape[0:2]
    Length.append(length)
    Width.append(width)
W=max(Width)
L=max(Length)

如何在 opencv 中添加填充以使所有图像具有相同的大小?在示例中 l 给出的图像将得到 (69,98,3)

How can l add padding in opencv so that all the images will have the same size? In the example l gave the images will get the shape of (69,98,3)

推荐答案

你可以使用:

image = cv2.copyMakeBorder(src, top, bottom, left, right, borderType)

src 是你的源图片，top、bottom、left、right 是图像周围的填充.

Where src is your source image and top, bottom, left, right are the padding around the image.

您可以在 while 循环中使用 max(sizes) - 图像的大小值来为每个图像添加填充.边框类型可以是以下之一:

You can use max(sizes) - size value of the image in a while loop to add the padding to each image. The bordertype can be one of these:

• cv2.BORDER_CONSTANT
• cv2.BORDER_REFLECT
• cv2.BORDER_REFLECT_101
• cv2.BORDER_DEFAULT
• cv2.BORDER_REPLICATE
• cv2.BORDER_WRAP

cv2.copyMakeBorder 教程

这篇关于向图像添加填充以使它们具有相同的形状的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！