rick parent - cis681 background perception display considerations animation production video...
TRANSCRIPT
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Rick Parent - CIS681
Background
Perception
Display Considerations
Animation Production
Video Technology
Orientation Representation
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Rick Parent - CIS681
Perception
Persistence of Vision
Refresh rate v. update rate
Perception of Motion
Flicker, flicker rate
Positive Afterimage
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Rick Parent - CIS681
Display Issues
Double buffering
CompositingAlpha channel
Shadows, drop shadows
Motion Blur
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Rick Parent - CIS681
Analog Image Technology
Raster scan video v. projected film frame
Film cameras, plotters
CRT: TVs, PCs, workstations
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Rick Parent - CIS681
Film
Format: dimensions, perforations, sound
Frames per second
Multiple exposures
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Rick Parent - CIS681
Video - Raster Pattern
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Rick Parent - CIS681
Interlaced Raster Pattern
Frame v. field
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Rick Parent - CIS681
Video
NTSC: 29.97Hz, interlaced4:3 aspect ratio ~480 scanlines~640 (square) pixels
60Hz, progressive scan
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Rick Parent - CIS681
Compression Techniques
Run-length encoding
LZW
Discrete Cosine Transform, Wavelet
YUV
Fractal
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Rick Parent - CIS681
Codecs
Video I
RLE
Sorenson
Cinepak
GIF
MPEG-1
MPEG-2
MJPEG
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Rick Parent - CIS681
Digital Video Formats
Animated GIF
MJPEG
MPEG
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Rick Parent - CIS681
Movie Formats
Quicktime
Video for Windows
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Rick Parent - CIS681
Non-linear Editing
Computer-basedEditing system
VCRWeb siteCD DVD
Disk
Source 2Source 1 Source n
DV camera
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Rick Parent - CIS681
Animation Production
Production - sequence - shot -frame
storyboard
Pencil tests
Test shots
Key frames (extremes) and in-betweening
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Rick Parent - CIS681
Animation Production
Art
Modeling
Lighting
Camera
Shading
Animating
Layout
Story
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Rick Parent - CIS681
Technical Jobs
R&D
Production Support
Technical Director (TD)
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Rick Parent - CIS681
Animation Principles
Arcs
Squash and Stretch Appeal
Follow Through / Overlapping Action
Secondary Actions
Exaggeration
Anticipation
Timing
Pose-to-pose v. Straight Ahead
Staging
Physics Presentation Aesthetics
Slow in & Slow out
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Rick Parent - CIS681
Orientation Representation
Transformation Matrices
Fixed Angle
Euler Angles
Axis-Angle
Quaternions
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Rick Parent - CIS681
Transformation Matrices
0
0
0
1
a
d
g
b c
e f
h i
0 0 0
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Rick Parent - CIS681
Fixed Angles
E.g., (X,Y,Z)
X
Z
Y
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Rick Parent - CIS681
Fixed Angle Interpolation
QuickTime™ and aGIF decompressor
are needed to see this picture.
(0,90,0) to (90,0,0)
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Rick Parent - CIS681
Euler Angles
X
Y
Z
x y
z
(e.g., z,y,x)
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Rick Parent - CIS681
Axis-Angle
(Ax,Ay,Az,)
Euler’s rotation theorem
X
Y
Z
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Rick Parent - CIS681
Quaternions
(cos(/2),sin(/2)*A)