CRISTAL Frame Grab:

The videotape record provides a library of images of the site
that can be accessed for viewing reference or analysis through
the use of computer hardware and software systems.  Images from
videotape can be digitally captured and stored in the computer's
memory by a process called "frame grabbing".  This entails
converting the analog video signal (which is in line form) to the
computer's digital signal (dot or pixel form).  The computer
image, which replicates the video image in color and resolution,
is then stored in the computer's memory structure (magnetic or
optical disk) for future reference and manipulation.

Through the use of frame grabbing techniques with television
cameras and videotape recordings, a wide array of information
from many media sources, such as sketches, slides, photographs,
handwritten notes, and drawings, can be merged into a single
environment.  Each of the case study projects in this research
employed this digitizing process to assemble a library of images
from various sources.

<dfile44>   CRISTAL: Resource Documentation
<dfile46>   CRISTAL: Information Management
<dfile65>   CRISTAL: Data Storage