Class 10: Monocular Depth Cues

Here are examples of the 6 different types of monocular depth cues we read about in Professor Walsh's text:

Size Differences:
In this landscape, we can see the difference in size of palm trees.  The nearest palm trees give a good idea how actually large they are.  However, in the distance, the palm trees look smaller (where I have circled).  These trees are not, in fact, any smaller than the ones nearby.

Occlusion:
In this particular screenshot, we are at a beach where different beach garb and trinkets are being sold. There are 12 or so separate little piles, if you will, of things for sale.  I have circled one of the closest piles.  We can clearly see, through occlusion, that the pile is in front of the other piles, and is relatively close to us.

Lighting and Shading:
As we see in these 2 screenshots, it is a sunny day.  When inside, the light looks almost like a laser beam shining in through the ceiling (circled in first shot).  So in the second screenshot, we can tell that the lighter side of the building is nearby, and the building stretches back quite a ways towards the left side of the frame. The lighting and shading make it possible to tell this even with just one eye.

Texture Density:
As something gets further away, it looks more dense, especially when it comes to patterns, like bricks.  When we are right on top of a brick walkway, the bricks directly under us look more spaced apart then the ones further.  This is texture density.  As something gets more distant, it gives an illusion of being more dense (where I circled).

Linear Perspective:
In this example, we see a set of train tracks.  They are equidistant from each other the entire length of it, however, as the tracks get more and more distant, they appear to be getting closer and closer together, until finally they appear to converge at what's called a "vanishing point"(circled).

Atmospheric Perspective:
Things up close look sharp.  As things get farther away, they lose this sharpness and begin to look almost fuzzy.  This happens because the eyes are seeing through significantly more atmosphere when something is farther away.  The more atmosphere the image travels through, the less clear it will seem, as I circled in the distance of this screenshot.  The willow tree in the distance looks fuzzy almost, when, up close, it is actually not.