I have an image (a captcha) that I download from the web. When I loaded to opencv it seems to loose its properties or simply mixes the transparent background with the dark/black colors: Currently the code does nothing but loading a writing again: captchaImg = cv2.imread('captcha1.png') cv2.imwrite("captcha2.png", captchaImg) I have tried loading also with options 0, 1, 2, 3 but the result is the same.

OpenCV imread transparency gone

I have an image (a captcha) that I download from the web.

Initial Image

When I loaded to opencv it seems to loose its properties or simply mixes the transparent background with the dark/black colors:

Processed Image

Currently the code does nothing but loading a writing again:

captchaImg = cv2.imread('captcha1.png')
cv2.imwrite("captcha2.png", captchaImg)

I have tried loading also with options 0, 1, 2, 3 but the result is the same.