home *** CD-ROM | disk | FTP | other *** search
- Path: sparky!uunet!topaz.bds.com!topaz.bds.com!ron
- From: ron@topaz.bds.com (Ron Natalie)
- Newsgroups: comp.sys.hp
- Subject: Re: Framegrabber for series 700
- Date: 17 Dec 1992 21:01:53 GMT
- Organization: BDS Systems
- Lines: 16
- Distribution: world
- Message-ID: <1gqps1INNps9@topaz.bds.com>
- References: <1992Dec17.194331.18972@murdoch.acc.Virginia.EDU>
- NNTP-Posting-Host: topaz.bds.com
-
- We've got the Raster Ops/HP VideoLive card. If you're only intersted
- in grabbing single frames it works quite nicely. It plugs into the EISA
- slot and interposes itself between the monitor and the HP graphics adapter
- (it has a cable that has three BNC plugs and three BNC sockets on it).
- It has another cable with BNC's for the input (either RGB or composite).
-
- It is controlled via the X Video extension. You tell it to start putting
- video on the screen and it frobs the video coming from the graphics adapter
- to superimpose the live video over the top of where you have created a
- blank X Window). You can then tell it to capture a frame and use XGetImage
- to retrieve it. It was a days work to write the code to do this in our
- Imaging application, and this was despite the fact that we had this prerelease
- and had no documentation or working example software. HP now has both an
- X Client to grab frames and write them to (I think TIFF) files.
-
- -Ron
-