在Opencv Python中将RGB图像转换为YUV和YCbCr颜色空间图像 [英] Convert RGB image to YUV and YCbCr color space image in Opencv Python

问题描述

有人可以帮助我使用opencv Python将RGB颜色空间图像转换为YUV颜色空间图像和YCbCr颜色空间图像吗?

Can anyone help me to convert an RGB colour space image to YUV colour space image and to YCbCr colour space image using opencv Python?

推荐答案

使用cv2.cvtColor(src, code)转换Color-Space，代码以COLOR_开头.

Use cv2.cvtColor(src, code) to convert Color-Space, the code starts with COLOR_.

您可以使用它来查找颜色代码.

You can use this to look for the color code.

import cv2
## get all color codes
codes = [x for x in dir(cv2) if x.startswith("COLOR_")]

## print first three color codes
print(codes[:3])
# ['COLOR_BAYER_BG2BGR', 'COLOR_BAYER_BG2BGRA', 'COLOR_BAYER_BG2BGR_EA']

## print all color codes
print(codes)

如果将图像读入BGR空间，请使用cv2.COLOR_BGR2YUV和cv2.COLOR_BGR2YCrCb:

If you read the image into BGR space, then use cv2.COLOR_BGR2YUV and cv2.COLOR_BGR2YCrCb:

#cv2.COLOR_BGR2YUV
#cv2.COLOR_BGR2YCrCb

img = cv2.imread("test.png")
yuv = cv2.cvtColor(img, cv2.COLOR_BGR2YUV)
cv2.imwrite("yuv.png", yuv)

如果将图像读入RGB空间，请使用cv2.COLOR_RGB2YUV和cv2.COLOR_RGB2YCrCb.

If you read the image into RGB space, then use cv2.COLOR_RGB2YUV and cv2.COLOR_RGB2YCrCb.

以下是示例图片(在BGR-HSV-YUV-YCRCB颜色空间中):

Here is an example image(in BGR-HSV-YUV-YCRCB color spaces):

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