在python/django中灰度的最佳方法是什么? [英] What's the best way to greyscale in python/django?

问题描述

我想对要上传到django中的图像进行灰度处理.因此，我找到了两种方法，opencv或imagemagick.在imagemagick中，imagemagickWand可能会更好，因为它已减少.

I want to greyscale my images that will be uploaded into django. So I found two ways, either opencv or imagemagick. And within imagemagick, imagemagickWand might be better because it's reduced.

从教程中，我认为openCV易于实现.

From the tutorials I think openCV is easier to implement.

有什么想法吗?

推荐答案

在python/django中进行灰度处理的最佳方法是什么?

What's the best way to greyscale in python/django?

选择.

ImageMagick的魔杖库

ImageMagick's wand library

from wand.image import Image
with Image(filename='logo:') as img:
    img.colorspace = 'gray'
    img.save(filename='logo_gray.jpg')

或CV2

import cv2
img = cv2.imread('example.jpg')
gray = cv2.cvtColor(img, cv2.COLOR_BGR2GRAY)
cv2.imwrite('example_gray.jpg',gray)

这两个项目都很成熟，稳定，并且拥有庞大的社区基础.尝试安装两个库，然后进行试验.

Both projects are mature, stable, and have a large community base. Try installing both libraries, and experimenting.

最后，灰度只是(来自维基百科).

In the end grayscale is just (from wikipedia).

Y = 0.2126 * RED + 0.7152 * GREEN + 0.0722 * BLUE

两者都做得很好，并依赖委托(即libjpeg)来读取&编写图像格式.

Both do this well, and depend on delegates (i.e. libjpeg) to read & write image formats.

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