Finding an object in an image

开发者_StackOverflow社区How do I find a license plate in an image?

I thought to look for the color of the plate, but I have a problem when there is another thing in the image in the same color.

In general you're going to be looking for some other features that make it obviously a license plate. Using some combination of feature detectors will probably help disambiguate this. There's already a lot of literature on detecting license plates.