Depth Perception

1. Determine depth by the difference in the apparent position of an object as seen by the left and right retinas
2. Looks at the overlap between images to see how much difference there is between them in order to determine dept

1. Neuromuscular Cues

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   • Neuromuscular cue that determines the degree to which our eyes turn to focus on an object. Our brain monitors the muscle movement to determine how close an object is. Your eyes pull inward when an object is close.

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• Larger objects are perceived as being closer. However, we already need to know the size of an object.

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• Parallel lines converge with distance. There is also a vanishing point. The 2 lines never cross however the farther away the line the closer the lines appear together.

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• Hazy objects are seen as more distant. When you are looking at objects far away, you have to look through atmosphere thus objects that are far away appear hazy. (smog in LA)

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• Closer objects block distant objects. It the strongest monocular cue. We know an object is closer because it is blocking another object.

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• Closer objects appear to have sharply defined detail. If it is blurry or fuzzy, the farther the object is bc we start losing detail.

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• Objects higher in the picture place tend to be seen as farther away. We use this when looking at pictures

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• The lens of the eye accommodates to focus on nearby objects. When an object is farther away away, the lens stretches out and this monitored by the brain.

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• Our ability to determine depth perception by how fast or slow an object is moving. Used to measure depth while we are moving. Objects that move by quickly are closer than those that move by slowly.