在OpenCv，Python中保存相同图像时无法获得原始图像的相同颜色 [英] Can't get same color of original image when saving same image in OpenCv, Python

问题描述

我写了一个代码来旋转图像并保存它们.所以我用OpenCv保存旋转的图像.保存旋转后的图像后，它在图像上变为蓝色.

I have written a code to rotate images and save them. So I used OpenCv to save rotated image. After save the rotated image, It gets blue on the image.

操作系统:Ubuntu 16.04

OS : Ubuntu 16.04

这是代码:

from scipy.ndimage import rotate
from scipy.misc import imread, imshow
import cv2
count = 0
while True:
    if count<230:
    filename = 'frame'+str(count)+'.jpg'
    print(filename)
    img = imread(filename)

    rotate_img = rotate(img, 90)
    cv2.imwrite(filename,rotate_img)
    count = count + 1
        continue
    else :
    break

为什么颜色会这样变化?我该怎么办? 任何帮助，将不胜感激！谢谢您的进阶！

Why color change like this? What should I need to do? Any help would be appreciated! Thank you in Advanced!

图片(保存前):

图片(保存后):

推荐答案

我可以解决问题.我必须将图像的颜色转换为RGB颜色.

I could solve the problem. I have to convert color of image into RGB color.

cv2.cvtColor(rotate_img, cv2.COLOR_BGR2RGB)

这是代码:

from scipy.ndimage import rotate
from scipy.misc import imread, imshow
import cv2
count = 0
while True:
    if count<230:
    filename = 'frame'+str(count)+'.jpg'
    print(filename)
    img = imread(filename)

    rotate_img = rotate(img, 90)
    #convert color of image before saving
    rgbImg = cv2.cvtColor(rotate_img, cv2.COLOR_BGR2RGB)
    cv2.imwrite(filename,rgbImg)
    count = count + 1
        continue
    else :
    break

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