How to remove a border with an unknown width from an image

Question

I\'m trying to build a program which can remove an single-colored border form an image.

The border is always white but the width of the border on the left and right

Answer 1

You can use the public int getPixel (int x, int y) function which return for every pixel its color
It should be easy to run through the border lines and verify that the color is still the same