We based our demo day on the Ames Room Illusion. To run our illusion, we took what we know about linear perspective, size constancy, and visual perspective. Linear perspective tells us that when an object is further away it is perceived as smaller as the visual field fixates on a point. When it comes to size constancy, we can tell that objects are further away by how they get higher in the visual field while being perceived as smaller.

Each object takes up a physical amount of space on the retina which is the object’s retinal image size. Our eyes combine retinal imagine size and information about the perceived distance gathered from object and environmental knowledge. This gives us perceived size and this information is transferred to the brain through neural impulses and produces what we see. This happens in V2.

Knowing this we figured that if we flatten the visual plane the object further back wouldn't be higher in the visual field. This would cause the image that is closer to appear to be even and constant in size with the object that is further away. It isn't until we change where the visual field that we can realize the actual distance of the closer object.

We also see that as the object further away comes closer and begins to expand the object closer to the screen begins to appear smaller as the object further away appears larger. This is because the visual plane is still even, yet our perceived size of the object is changing. By changing perspective we get rid of the visual perception that size constancy allows.

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