MTD2 class 11

esse quam videri
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The Eye

http://en.wikipedia.org/wiki/Eyes

Dynamic Range

Light contrast of 100:1 or 1,000,000:1 over time

Color Vision

http://en.wikipedia.org/wiki/Color_vision

Digitizing Video

Helical Head recording Toshiba Firsts

Videotape1HelicalHead.gif Videotape2HelicalHead.gif


RGB Red Green Blue 8Bits each [3(RGB) *8(Bits) = 24 Bit color] or 2^24 = 16777216 colors Color Video uses [1]YCC (YUV(PAL)/YIQ(NTSC)) to be compatable with Black and White Broadcast

Y is luminance (same luminace used in B&W broadcast). Luminace determines the brightness of the pixel The Two C's (the c's are known as chrominance) determine the hue.

Analog Video

Composite===

One Cable. The luminance and color signals are merged onto one cable because of this mergin some information will be lost due to inferfernce.

S-Video (beter)

Separated the luminace and color signal onto separate cables that are encased in one cable

Component (best)

Each of of the YCC are given their own cable
Tape Format Video Format Quality Applications VHS Composite Good Home Video S-VHS, Hi-8 S-Video Better prosumer, industrial video BetaSP Component Best broadcast

Chroma Subsampling http://en.wikipedia.org/wiki/Chroma_subsampling

Because the human eye is less sensitive to color than luminance the chroma is often recorded with lower deffinition. 4:2:2 color http://en.wikipedia.org/wiki/4:2:2 4:1:1 color

Digital Video(DV)

DV25 DVCAM, DVPRO DV50, DV100

Digital Cameras

Cameras us a Charge Coupled Device (CCD) to convert light into electicty. [How Digital Cameras Work] A 3CCD camera splits the incoming light into three beam and uses three CCD's to capture each of the RGB values. A 1 CCD Camera can use a color filter array like the Bayer filter pattern to record the RGB color information.

Bayer filters have twice as many green pixels

Animation in Flash

  1. Onion Skinning
    1. Rotoscoping
  2. Motion Tweeing (Key Framing)
    1. Path Animation
    2. http://www.echoecho.com/flashtweenings01.htm


Homework

  • Read Adobe DV Primer
  • Practive motion tween and onion skin animation


Links