I get the following images, but none of them shows the flag. Am I doing something wrong?

Yes, you are doing something wrong. There are no gradient-like images in the solution.

Thanks, I will look into it

There's more to it

Can always count on you to get a first blood lol :) nice solution

Thanks ;)

I have to learn opencv some day :D Nice solution!

Thanks Rivit, opencv + numpy is powerful :)

Can always count on you to get a first blood lol :) nice solution

Thanks ;)

I have to learn opencv some day :D Nice solution!

Thanks Rivit, opencv + numpy is powerful :)

I get the following images, but none of them shows the flag. Am I doing something wrong?

Yes, you are doing something wrong. There are no gradient-like images in the solution.

Thanks, I will look into it

There's more to it