Upload
elani
View
45
Download
2
Tags:
Embed Size (px)
DESCRIPTION
Digital media in virtual environments Part I - images. Erik Brisson [email protected]. Digital Media in VR. Examples images sound clips text video streams audio streams. Images in virtual environments. C.G. concepts geometric models digital images texture mapped images - PowerPoint PPT Presentation
Citation preview
BPC: Art and Computation – Fall 2006BPC: Art and Computation – Fall 2006
Digital media in virtual environments Digital media in virtual environments Part I - imagesPart I - images
Erik Brisson
BPC: Art and Computation – Fall 2006 2
Digital Media in VRDigital Media in VR
Examples– images– sound clips– text– video streams– audio streams
BPC: Art and Computation – Fall 2006 3
Images in virtual environmentsImages in virtual environments
C.G. concepts– geometric models– digital images– texture mapped images– producing c.g. images
Images in DAFFIE
BPC: Art and Computation – Fall 2006 4
Computer graphics – texture mapsComputer graphics – texture maps
BPC: Art and Computation – Fall 2006 5
Model geometry – cube on tabletopModel geometry – cube on tabletop
BPC: Art and Computation – Fall 2006 6
Model geometry - torusModel geometry - torus
BPC: Art and Computation – Fall 2006 7
What is a digital image?What is a digital image?
BPC: Art and Computation – Fall 2006 8
What is a digital image?What is a digital image?
BPC: Art and Computation – Fall 2006 9
What is a digital image?What is a digital image?
BPC: Art and Computation – Fall 2006 10
What is a digital image?What is a digital image?
P31136 852255191 214 206 113 134 135 101 120 135 102 119 147 113 129 165117 131 170 125 138 170 158 168 195 219 227 246 244 251 255249 254 255 197 202 222 157 163 187 156 161 190 165 172 200218 224 246 250 255 255 252 255 251 251 255 252 245 249 250251 255 255 188 192 204 196 200 212 234 238 250 177 181 192111 114 133 122 121 155 154 151 194 182 176 220 243 240 255253 252 255 250 251 246 254 254 252 255 255 255 255 255 255254 254 254 255 255 255 255 255 255 254 254 254 255 255 255249 249 249 249 249 249 252 252 252 255 255 255 255 255 255255 255 255 254 254 254 255 255 255 255 255 255 255 255 255255 255 255 255 255 255 255 255 255 255 255 255 255 255 255255 255 255 255 255 255 255 255 255 253 253 253 252 252 252252 252 252 253 253 253 255 255 255 255 255 255 255 255 255…
BPC: Art and Computation – Fall 2006 11
Putting it together – texture mapsPutting it together – texture maps
BPC: Art and Computation – Fall 2006 12
Images – aspect ratio Images – aspect ratio
Aspect ratio
= ratio of width
to heightExample
12 x 9 pixels
Aspect ratio
= 12 : 9 = 4 : 3 = 1.3333 : 1
BPC: Art and Computation – Fall 2006 13
Aspect ratio exampleAspect ratio example
Size = 640 x 480 pixelsAspect ratio = 640 : 480 = 4 : 3
BPC: Art and Computation – Fall 2006 14
Aspect ratio exampleAspect ratio example
Size = 512x512 pixelsAspect ratio = 512 : 512 = 1 : 1
BPC: Art and Computation – Fall 2006 15
Aspect ratio exampleAspect ratio example
Size = 480x640 pixelsAspect ratio = 480 : 640 = 3 : 4
BPC: Art and Computation – Fall 2006 16
Human view of physical worldHuman view of physical world
BPC: Art and Computation – Fall 2006 17
Human view of imageHuman view of image
BPC: Art and Computation – Fall 2006 18
Computer graphics paradigmComputer graphics paradigm
BPC: Art and Computation – Fall 2006 19
C.G. concept - texture mapC.G. concept - texture map
BPC: Art and Computation – Fall 2006 20
C.G. example - texture mapC.G. example - texture map
BPC: Art and Computation – Fall 2006 21
Texture map fullTexture map full
++
BPC: Art and Computation – Fall 2006 22
Result - texture mapped c.g. imageResult - texture mapped c.g. image
BPC: Art and Computation – Fall 2006 23
Texture map alternativeTexture map alternative
++
BPC: Art and Computation – Fall 2006 24
More texture map alternativesMore texture map alternatives
BPC: Art and Computation – Fall 2006 25
Texture map general exampleTexture map general example
++
BPC: Art and Computation – Fall 2006 26
Texture map cylinderTexture map cylinder
++
BPC: Art and Computation – Fall 2006 27
Texture map cylinder approximationTexture map cylinder approximation
++
BPC: Art and Computation – Fall 2006 28
What you will be able to doWhat you will be able to do
DAFFIE Project1 demo nowDAFFIE Project1 demo now
BPC: Art and Computation – Fall 2006 29
DAFFIE modelsDAFFIE models
Models loaded when DAFFIE viewer starts– Includes geometry and texture images
Use imagecp tool to send your images into VR world– Choose Corel generated image on your PC– Choose object in the Project1 DAFFIE world– Send
What does this do?
BPC: Art and Computation – Fall 2006 30
Imagecp and DAFFIEImagecp and DAFFIE
Navigator Viewer
Navigator
Viewer
Sound server
Event Server
imagecp
imagecp
imagecp
imagecp Image agent
Sound server