Visual effects Flashcards
(25 cards)
Flashed Face Distortion Effect
Optical illusion causing faces just outside the direct line of sight to appear grotesque.
Pareidolia
Finding faces in everything
Iris
Colored part around pupil which contracts and expands to control light
Lens
Transparent film behind pupil which focuses light
Retina
inner surface of eye which captures image
Fovea
Small area of inner eye surface directly behind lens and pupil which perceives detail
Optic Nerve
Stretches from lower back of the eye to the brain to transmit signals, also creates a small “blind spot” in the Retina surface
Acuity
The level of detail rendered at different places in the cone of vision.
Sensitivity
The range of luminance perception in humans, measured in mili-Lamberts (Range is from 10^-6 to 10^10)
Rods
Light receptors in the retina which are more sensitive to low light
Cones
Light receptors in the retina which perceive color
Photosensitive Ganglion Cells
Responsive to light and capable of adjusting iris size and affecting circadian rhythms eve in eyes lacking rods and cones
Chromatic Blurring
Unequal refraction reduces acuity, but filtering out one end of the spectrum can help
Saccadic Eye Movement
Eyes don’t take pictures like a camera, they scan them like the scanners downstairs
Saccades
abrupt jumps from one point to another in a scene, the brain filters out retinal images between these 0.5 second jumps.
Gestalt
Structure form elements
Simultaneous Contrast
The effect which makes regions which are in fact the same color and shade as each other appear different by surrounding them with different darker or lighter colors.
White’s Effect
The case where grey overlapping black surrounded by white appears lighter than grey overlapping white surrounded by black, the cause of this is said to be unknown
Afterimage
Suddenly you were gone. Looking at an image with some amount of brightness contrasted next to darkness will leave an imprint in your mind where you see that same shape of brightness in negative as a kind of watermark over whatever you look at directly afterwards
Subjective Contour
Your brain finishing the image based on scant visual clues
Mach Effect
the alteration of apparent shade based on the adjacency of the value to a contrasting value.
Similar to Simultaneous Contrast, but taken as an edge effect rather than the effect on a region or shape.
Razzle Dazzle
A type of camouflage developed to make submarine periscopes less effective
Flat Baffles
Angle light into the direct glare zone more often than not and are thus not very effective at shading a space
Reflected Glare
what it sounds like