Male Baldness Info

I think I am starting to go thin on top, some people say yes some people say no, under bright light it looks a lot worse, these pics are taken with a camera and flash, this is under a light.
My hair line is not receding at all but I have a very irregular shape of thinning, its like on the left side of my crown and a line down the center of my scalp. Does this look like male pattern baldness? I dont wanna go bald!
I am a moderately health 23 year old male, please give your honest opinion.
Pictures

http://img3.imagebanana.com/view/8n3wyztf/bald1.JPG

http://img3.imagebanana.com/view/sc7r5oj5/bald2.JPG

http://img3.imagebanana.com/view/0q5kd89/bald3.JPG

http://img3.imagebanana.com/view/q51jr4m4/bald4.JPG