why cv2.imwrite() changes the color of pics?

why cv2.imwrite() changes the color of pics?

python opencv opencv3.0

python

OpenCV Error: (-215)size.width>0 && size.height>0 in function imshow

python image opencv computer-vision opencv3.0

python

TypeError: Required argument 'outImg' (pos 6) not found

python opencv opencv3.0

python

OpenCV 3.0 LineIterator

python opencv opencv3.0

python

OpenCV resize fails on large image with "error: (-215) ssize.area() > 0 in function cv::resize"

python python-3.x image opencv opencv3.0

python

What is the cv2.cv replacement in OpenCV3?

python opencv3.0

python

How to get the latest frame from capture device (camera) in opencv

python opencv camera video-capture opencv3.0

python

compatibility issue with contourArea in openCV 3

python opencv opencv3.0

python

KNN train() in cv2 with opencv 3.0

python opencv3.0 knn

python

OpenCV ORB descriptor: TypeError: Incorrect type of self (must be 'Feature2D' or its derivative)

python opencv image-processing computer-vision opencv3.0

python

How to remove whitespace from an image in OpenCV?

python opencv image-processing opencv3.0

python

Python result changes during cv2.Rodrigues computation

python numpy opencv debugging opencv3.0

python

Camera pose from solvePnP

python opencv3.0 opencv-solvepnp

python

AttributeError: 'module' object has no attribute 'ORB'

python opencv opencv3.0

python

Python opencv sorting contours

python python-2.7 opencv lambda opencv3.0

python