Python OpenCV2(cv2)包装器获取图像大小? [英] Python OpenCV2 (cv2) wrapper to get image size?

问题描述

如何在Python OpenCV(numpy)中的cv2包装器中获取图像的大小.除了numpy.shape()之外，还有其他正确的方法吗?如何获得以下格式的尺寸:(宽度，高度)列表?

How to get the size of an image in cv2 wrapper in Python OpenCV (numpy). Is there a correct way to do that other than numpy.shape(). How can I get it in these format dimensions: (width, height) list?

推荐答案

cv2使用numpy来处理图像，因此获取图像大小的正确和最佳方法是使用numpy.shape.假设您正在使用BGR图片，下面是一个示例:

cv2 uses numpy for manipulating images, so the proper and best way to get the size of an image is using numpy.shape. Assuming you are working with BGR images, here is an example:

>>> import numpy as np
>>> import cv2
>>> img = cv2.imread('foo.jpg')
>>> height, width, channels = img.shape
>>> print height, width, channels
  600 800 3

如果要使用二进制图像，则img将具有两个尺寸，因此必须将代码更改为:height, width = img.shape

In case you were working with binary images, img will have two dimensions, and therefore you must change the code to: height, width = img.shape

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