Graphics System Overview. Jehee Lee Seoul National University. Video Display Devices. Cathode Ray Tube(CRT) is the most common display device High resolution Good color fidelity High contrast (400:1) High update rates. Vector vs Raster CRT.
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Seoul National University
colormapped with color display (8 or 4 bit)
RGB (15=5+5+5 or 16=5+6+5 bit)
True Color, Direct Color
RGB (24=8+8+8 bit)Display Resolution
⇒ whole frame takes 1/60 + 1/60 = 1/30 sec
and gives the feel of immersion
the position of HMD in 3D space.
Graphics Library such as Core, OpenGL, DirectX
CGI (Computer Graphics Interface)
Graphics system: a library of graphics functions
But, objectionable blocking artifacts may occur.
BITS PER PIXEL FILE SIZE COMMENTS
JPEG 24 small lossy, good for archives
TIFF 8,24 medium good
GIF 1,4,8 medium no good for colorful images
EPSF 1,2,4,8,24 huge good for printing