Background Perception Display Considerations Video Technology Animation Production

Background Perception Display Considerations Video Technology Animation Production Orientation Representation Rick Parent - CIS 681

Perception Persistence of Vision Positive Afterimage Perception of Motion Flicker, flicker rate Refresh rate v. update rate Rick Parent - CIS 681

Display Issues Double buffering Shadows, drop shadows Motion Blur Compositing Alpha channel Rick Parent - CIS 681

Analog Image Technology Raster scan video v. projected film frame Film cameras, plotters CRT: TVs, PCs, workstations Rick Parent - CIS 681

Film Format: dimensions, perforations, sound Frames per second Multiple exposures Rick Parent - CIS 681

Video - Raster Pattern Rick Parent - CIS 681

Interlaced Raster Pattern Frame v. field Rick Parent - CIS 681

Video NTSC: 29. 97 Hz, interlaced 4: 3 aspect ratio ~480 scanlines ~640 (square) pixels 60 Hz, progressive scan Rick Parent - CIS 681

Compression Techniques Run-length encoding LZW Discrete Cosine Transform, Wavelet YUV Fractal Rick Parent - CIS 681

Codecs Video I RLE GIF Sorenson MPEG-1 Cinepak MJPEG MPEG-2 Rick Parent - CIS 681

Digital Video Formats Animated GIF MJPEG MPEG Rick Parent - CIS 681

Movie Formats Quicktime Video for Windows Rick Parent - CIS 681

Non-linear Editing Source 2 Source 1 Computer-based Editing system Disk CD DVD Source n DV camera Web site VCR Rick Parent - CIS 681

Animation Production - sequence - shot -frame storyboard Pencil tests Test shots Key frames (extremes) and in-betweening Rick Parent - CIS 681

Animation Production Story Art Modeling Layout Animating Shading Lighting Camera Rick Parent - CIS 681

Technical Jobs R&D Production Support Technical Director (TD) Rick Parent - CIS 681

Animation Principles Physics Presentation Aesthetics Follow Through / Overlapping Action Squash and Stretch Secondary Actions Arcs Timing Appeal Anticipation Staging Exaggeration Slow in & Slow out Pose-to-pose v. Straight Ahead Rick Parent - CIS 681

Orientation Representation Transformation Matrices Fixed Angle Euler Angles Axis-Angle Quaternions Rick Parent - CIS 681

Transformation Matrices a b c 0 d e f 0 g h i 0 0 1 Rick Parent - CIS 681

Fixed Angles Y E. g. , (X, Y, Z) X Z Rick Parent - CIS 681

Fixed Angle Interpolation (0, 90, 0) to (90, 0, 0) Rick Parent - CIS 681

Euler Angles Y x y (e. g. , z, y, x) z Z X Rick Parent - CIS 681

Axis-Angle Y (Ax, Ay, Az, q) A q Z X Euler’s rotation theorem Rick Parent - CIS 681

Quaternions (cos(q/2), sin(q/2)*A) A q Rick Parent - CIS 681