Presentation on theme: "A Creative Genius for Vision"— Presentation transcript:
1 A Creative Genius for Vision Visual IntelligenceDonald D. HoffmanChapter One
2 The Genius of Vision Everything you see, you construct Our visual prowess is a genius that often goes unrecognizedYet, we construct scenes that contradict realityIs our vision or our hand erroneous?Can there be elements in the picture causing the problem?
3 More Evidence The “Magic Square” Brighter inside is a vision or photometer error?Ironically, the boundary increase makes the construction of the square difficult
4 More Evidence The Devil’s Triangle Vision can do more than fabricate a structure, as it goes against realityWe build a triangle, even though this could be a structure photographed at a specific angleThe Devil’s Triangle
5 “What you see”There are elegant principles being applied when constructing an imagePhenomenal sense – The way things appear to us, objects we construct regardless of reality constraintsRelational sense – what you interact with when you see, things must exist to be seenThe phenomenal sense applies to our “visual genius”Visual experiences serve as user-friendly computer icon interface with those things we relationally see
6 Vision Comes Naturally Unlike the ability to walk or talk, humans can see upon birthIt is also an ability that we share with animals alikeGold fish have four color receptorsHoneybees see ultraviolet lightIs our vision the correct vision?
7 A Child’s Visual Development One month – infants blink if something moves toward their eyes3 months – infants use visual motion to construct boundaries of objects4 months – use motion and stereovision to construct 3D shapes of objects7 months – use shading, perspective, and interposition to construct depth and shapeOne year – visual geniuses that begin to learn the name of objects
8 Visual Construction in Nature Blackbird NestlingsFor some species, their visual construction displays less geniusBut no different than humans, this leaves room for visual errors
9 Visual Construction in Nature View of Chickens and DucksThe Common Toad
10 Brief HistoryPtolemy (2nd century AD) – recognized in Optics is a dictate of logicAlhazen ( ) – visual properties due to unconscious inferenceNicolas Malebranche ( ) – visual inferences came God
11 A Brief HistoryHermann von Helmholtz ( ) – described vision as a process of unconscious inferenceDavid Marr ( ) – compared visual construction to information processing in computersErnst Hans Gombrich(1909) – unconscious and automatic processes are “projections”, while those that are more labored for are “inference” or “knowledge”
12 Fundamental Problem of Vision The image at the eye has countless interpretationsHow can we know that we all see the same thing?Innate rules which grant visual mastery and lead to consensus in the visual constructions despite ambiguityEveryone constructs the same vision (with or without the same interpretation)The rules, which work quickly and effectively are the key