What are the perspective phenomena in the photo River?

The photographic perspective of the "river course" shows that the trees in the river course and on both sides are near big and far small, and the farther away they are, the smaller they are. According to relevant data, perspective can be divided into three types. From the front, there will be a little perspective, from the side, there will be two perspectives, and from a very high or low place, there will be three perspectives.