Photos of your hair line are not a good way to try to determine of you are balding or not. The reason is because it is completely natural and normal for males to lose their temple hair and develop an adult male hair line. This is especially true for caucasion males. The best areas of your scalp to check for possible MPB are your vertex and mid-anterior. To do that, take good quality photos of your scalp with your hair parted in the middle, both wet and dry. It will show much more prominently when your hair is wet than when it is dry. If you see obvious thinning in your vertex or mid-anterior, then yes you are balding. If that bothers you, you should do something about it. Also, if your temples recess to Norwood 3, that is an indicator that you are balding as well.
Your hair line looks like a natural and normal adult male hair line (Norwood 2). It may stay that way for many many years or it may progress to Norwood 3. If you currently do not have thinning in your vertex and mid-anterior, you do not yet have anything to worry about. However it would be a good idea to start taking good quality photos of your scalp and hair line every six months and compare them as you go. This way if you find that you are thinning, you will catch it early and be in a better shape to slow it down, stop it and possibly reverse much of it.