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Example Notes Afterimage illusion An afterimage or ghost image is a visual illusion involving an image continuing to appear in one's vision after the exposure to the original image has ceased. Afterimage on empty shape (also known as color dove illusion) This type of illusion is designed to exploit graphical similarities. Ambiguous image
A familiar phenomenon and example for a physical visual illusion is when mountains appear to be much nearer in clear weather with low humidity than they are.This is because haze is a cue for depth perception, [7] signalling the distance of far-away objects (Aerial perspective).
An example of this is a large area of land used by numerous independent farmers to grow crops. The human brain uses similarity to distinguish between objects which might lie adjacent to or overlap with each other based upon their visual texture.
A starling, for example, has laterally placed eyes to cover a wide field of view, but can also move them together to point to the front so their fields overlap giving stereopsis. A remarkable example is the chameleon, whose eyes appear as if mounted on turrets, each moving independently of the other, up or down, left or right. Nevertheless, the ...
The human visual system will settle on either of the interpretations of the Rubin vase and alternate between them, a phenomenon known as multistable perception. Functional brain imaging shows that, when people see the Rubin image as a face, there is activity in the temporal lobe, specifically in the face-selective region.
The moiré effect also occurs between overlapping transparent objects. [5] For example, an invisible phase mask is made of a transparent polymer with a wavy thickness profile. As light shines through two overlaid masks of similar phase patterns, a broad moiré pattern occurs on a screen some distance away.
Overlapping of aerial photos means that around 60% of the covered area of every aerial image overlays that of the one before it. [2] Every object along the flying path can be observed twice at a minimum. [2] The purpose of overlapping the aerial photography is to generate the 3D topography or relief when using a stereoscope for interpretation. [2]
Photomontage is the process and the result of making a composite photograph by cutting, gluing, rearranging and overlapping two or more photographs into a new image. [1] Sometimes the resulting composite image is photographed so that the final image may appear as a seamless physical print.