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Computer Graphics Research Group Thursday, November 29, 2012: Perspective in Two Dimensions for Computer Graphics
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wlr...@uwaterloo.ca
Nov 15, 2012, 3:04:43 PM11/15/12
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A new Computer Graphics Research Group event has been scheduled:
Perspective in Two Dimensions for Computer Graphics
Computer graphics perspective is based on photography, the pin-hole
camera model. This thesis examines the perspective as practiced by
artists, who develop the picture geometry within the planar surface of
the canvas. Their appraoch is flexible, depth is simulated with planar
composition the primary geometry. Renaissance artists discovered
construction methods to draw the foreshortening of realistic pictures:
the construction of a tiled floor in perspective was fundamental.
This thesis presents the framework, a computer program I developed, to
create the perspective of pictures, based on the geometry practices of
artists. Construction lines on the image plane simulate the 3D goemetry
of the pictorial space; cartoons of foreground elements are manipulated
in 2D within the picture perspective; projected shadows, examples of
double projection, are also included. A formalism, reformulating
algebraically the straight-edge and compass evaluations, generalizes
the planar geometry that solves the challenge of depicting 3D. A
revised `Painters algorithm\' produces the occlusions between the picture
elements from sequencing them from their definitions on the canvas.
Date: Thursday, November 29, 2012
Time: 13:00
Please look on WebCalendar to view this appointment.
http://www.cs.uwaterloo.ca/odyssey/event/1627
Perspective in Two Dimensions for Computer Graphics
Computer graphics perspective is based on photography, the pin-hole
camera model. This thesis examines the perspective as practiced by
artists, who develop the picture geometry within the planar surface of
the canvas. Their appraoch is flexible, depth is simulated with planar
composition the primary geometry. Renaissance artists discovered
construction methods to draw the foreshortening of realistic pictures:
the construction of a tiled floor in perspective was fundamental.
This thesis presents the framework, a computer program I developed, to
create the perspective of pictures, based on the geometry practices of
artists. Construction lines on the image plane simulate the 3D goemetry
of the pictorial space; cartoons of foreground elements are manipulated
in 2D within the picture perspective; projected shadows, examples of
double projection, are also included. A formalism, reformulating
algebraically the straight-edge and compass evaluations, generalizes
the planar geometry that solves the challenge of depicting 3D. A
revised `Painters algorithm\' produces the occlusions between the picture
elements from sequencing them from their definitions on the canvas.
Date: Thursday, November 29, 2012
Time: 13:00
Please look on WebCalendar to view this appointment.
http://www.cs.uwaterloo.ca/odyssey/event/1627
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