SCRY

Section: LAWRENCE BERKELEY LABORATORY (n)
Updated: 1992
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NAME

Scry - a distributed image handling system  

DESCRIPTION

Scry is a general purpose, distributed image handling system. It has been used for distributed scientific movie-making and image processing applications. The system consists of a client that compresses and transmits images, and servers that display and/or record images. Scry is specifically designed for operation over wide-area networks, as well as local-area networks. It provides various image compression/decompression mechanisms to optimize use of the networks. Tools are available to handle the common image formats RLE, HIPS, and Sun rasterfile, though the main client library deals in raw (headerless) images.

The client library has been written to be fairly portable, and runs on Unix and Unicos. The client library is written in C. The client requires a Unix-like run-time library and an implementation of 4BSD Unix sockets to support it.

There are three servers provided with Scry. One of these servers runs on X window-based workstations, one specifically on Sun's using Sunview, and one on a PC based animation workstation. When invoked, the window-based servers open a window and display each frame that is sent by the client. In addition to display, they have an option for writing the compressed images to a disk file. This disk file may be archived, sent to the PC animation workstation, or viewed and manipulated with Anima, a movie preview and editing program. A typical use for this server is to monitor the progress of a client on a remote compute server, while saving the frames locally for subsequent video recording.

The PC server is used primarily to control video recording equipment. As a server the PC runs standalone. It receives images from a client, decompresses them into a local frame buffer, and records them one frame at a time on video tape or a video optical disk.  

SEE ALSO

scry_client(L), pcserv(L), Xserv(3), svserv(3),

W. E. Johnston, D. E. Hall, J. Huang, M. Rible, and D. Robertson. ``Distributed Scientific Video Movie-Making''. Proceedings of the Supercomputing Conference 1988 (The Computer Society of the IEEE). Also available as LBL-24996, University of California, Lawrence Berkeley Laboratory, Berkeley, CA (1988).  

AUTHORS

David Robertson, Bill Johnston, Nicole Texier, Fritz Renema, Max Rible, Teck-Joo Chua, James Huang, Antony Courtney, and Brian Tierney


 

Index

NAME
DESCRIPTION
SEE ALSO
AUTHORS

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