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MOTION PARALLAX EXAMPLE MOVIE

MOTION PARALLAX EXAMPLE MOVIE

Download and play the animation (4 Mb mpeg movie).ĭownload and play the movie (3.8 Mb QuickTime movie with sound).ĭownload and play the movie (1.9 Mb QuickTime movie with sound). But when set into motion, it is easy to interpret. Light displays" shown in class of people walking, dancing, etc.,ĭisplayed as the motion of a small number of dots attached to the

Recognition actions, such as movements of a human (in the "point.

Movies (especially with large screens as in an IMAX theater) can give this illusion that you are moving. When there is strong motion on your retina, especially in peripheral regions, you can misattribute that motion and perceive yourself as moving (called "vection"). Things that are further away slide across the retina more slowly. For example, hold up two fingers (one on each hand) at different distances, and move your head slowly from side to side while fixating an object on a far wall.

Compute the distance to various objects in the scene and estimate the direction in which you are heading within the scene.

Segmentation of foreground from background.

Simply detecting that something is moving, draws your attention.

Role of motion perception: Motion perception serves lots of Sensitive to motion and selective for the direction of motion, whichĪdapt to the stimulus (analogous to color adaptation after-effects).īelow is yet another example of a motion illusion. We take this as evidence for the existence of neurons that are Local in the retina (to the right of where you were looking, you wereĪdapting to rightward motion, to the left you adapted to leftward, and The demonstration above shows that this adaptation is

This is sometimesĬalled the "waterfall illusion" - if you look at a waterfall for a

Time, if you look at a stationary object, it appears to move in theĭirection opposite to the one you were viewing. Stare at the center of the following animation for about a minute, as it expands continuously (you may need to reload the page to get it moving again after it stops), then fix your gaze on colorful texture pattern next it it.Īfter viewing continuous motion in the same direction for a long It is a tribute to Duchamp's cubist painting titled "Nude Descending a Staircase" in which the changing pattern of light gives the illustion of motion even though she never gets anywhere (you made need to double-click on the image below or reload the page for the animation to play).Īnother example is the motion aftereffect. Below is one example of a visual illusion of motion that I made. In class I showed you a number of demonstrations in which motion is misperceived. Motion is a perceptual attribute: the visual system infers motion from the changing pattern of light in the retinal image. Corrolary discharge explains why eye movements do not evoke a perception of motion.STS is specialized for recognizing biological motion.Cortical area MST is functionally speicalized for optic flow.Well-defined pathway of brain areas (cascade of neural computations) underlying motion specialization in MT.Computational theory quantitatively explains both the responses of MT neurons and the perception of visual motion.Electrical stimulation in MT causes changes in visual motion perception.Damage to MT or temporary inactivation causes deficits in visual motion perception.Neural responses in MT are correlated with the perception of motion.Neurons in MT are selective for motion direction.Cortical area MT is functionally specialized for motion.Motion aftereffect and other motion illusions.Perception Lecture Notes: Visual Motion Perception Perception Lecture Notes: Visual Motion Perception What you should know about this lecture