Digital Media: COMS 106 Images

Digital Media Before You Create Images Plan your approach Organize your tools

Digital Media Making Still Images  Bitmaps Stills are drawn in one of two ways  Vector-drawn graphics

Digital Media Making Still Images Stills are drawn in one of two ways Images are usually compressed

Digital Media Bitmaps Clip art

Digital Media Bitmaps Clip art Bitmap software

Digital Media Bitmaps Clip art Bitmap software Capturing Scanning

Digital Media Vector Drawings  Vector graphics are defined using formulas RECT 0,0,200,200,RED,BLUE

Digital Media Vector-Drawings vs. Bitmaps Vector drawings are easily scaled Vector files are usually smaller Calculation time can draw resources Bitmaps cannot easily be converted to vector Vector drawings require plug-ins

Digital Media 3-D Drawing 3-D software usually offers:  Directional lighting  Motion  Different perspectives

Digital Media 3-D Drawing 3-D objects combine various shapes

Digital Media 3-D Drawing Shapes can be extruded…

Digital Media 3-D Drawing …or lathed

Digital Media 3-D Drawing A scene can use different types of shading Gourand shading Ray tracing Flat shading Phong shading

Digital Media Panoramas QuickTime VR

Digital Media Color Quantum Theory  Atoms produce unique colors as light passes through  Light travels in the form of photons, or quanta Color is the frequency of a light wave  The rainbow shows the spectrum of visible colors  Colors below the range are infrared  Colors above the range are ultraviolet

Digital Media Color Computerized Color  Computers combine red, green, and blue (RGB) light  Bit depth determines the number of possible colors 1-bit 2 colors 4-bit 16 colors 8-bit 256 colors 24-bit 16,777,216 colors

Digital Media Color Computerized Color Television Color  Color is generated using the YUV color model  Luminance (Y)  Blue minus luminance (U)  Red minus luminance (V)

Digital Media Color Computerized Color Television Color Print Color  Color is generated using the CMYK color model  Cyan (C)  Magenta (M)  Yellow (Y)  Black (K)

Digital Media Image File Formats TIFF or.tif or Pict or.pic JPEG or.jpg GIF or.gif Cross Platform Issues Internet Issues

Digital Media Image Software

Digital Media Assignment for this week!!!