What is the difference?

I converted an image from RGB to binary. However, the color code show that white is represented by number 0 and black is represented by number 255 instead of 0 and 1. Am I wrong?

[John D'Errico]

Since we have no idea what you did for this conversion, it is difficult to know what you did wrong. But it is highly likely true that you are wrong in what you did.

Did you truly start out with a classic RGB image, or perhaps was this a negative? Or was it really in some other color space, but merely encoded 0-255, so perhaps you thought it was RGB? CMY? Or did you make some other mistake? How can we know?