Recognising Pixle groups

[Engineer 0]

I know you can recognise certian pixles colors in a picture, but how can you recognise images, or more presisly pixle combinations. and is there a guide for the colors values? like red would = 1234 and blue would = 2345. I know those arn't correct, so some help on that would be apricated. I'm working from the ground up, so I'm not really knowledgable on these types of things. thanks

[wakillon 403]

I know you can recognise certian pixles colors in a picture, but how can you recognise images, or more presisly pixle combinations. and is there a guide for the colors values? like red would = 1234 and blue would = 2345. I know those arn't correct, so some help on that would be apricated. I'm working from the ground up, so I'm not really knowledgable on these types of things. thanks

Look at here for color values.