OpenCV - imread(), imwrite() increases the size of png?

Question

I wanted to try out some simple operations on files and I started with opening and saving files (I use Python)

image = cv2.imread(\"image.png\")
cv2.imwrite(         


        

Answer 1

You can use a third-party command line tool optipng to re-compress and shrink the png file size without losing anything.

Reference:

http://optipng.sourceforge.net/pngtech/optipng.html

https://github.com/johnpaulada/optipng