Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP Path: utzoo!mnetor!uunet!seismo!husc6!bbn!oberon!cit-vax!ucla-cs!zen!ucbvax!ADS.ARPA!Info-Graphics-Request From: Info-Graphics-Request@ADS.ARPA (Info-Graphics moderator Andy Cromarty) Newsgroups: comp.graphics.digest Subject: Info-Graphics Digest Message-ID: <8708231021.AA09079@ucbvax.Berkeley.EDU> Date: Sun, 23-Aug-87 06:00:21 EDT Article-I.D.: ucbvax.8708231021.AA09079 Posted: Sun Aug 23 06:00:21 1987 Date-Received: Sun, 23-Aug-87 22:18:29 EDT Sender: daemon@ucbvax.BERKELEY.EDU Reply-To: Info-Graphics@ADS.ARPA Distribution: world Organization: The ARPA Internet Lines: 155 Approved: info-graphics@ads.arpa Info-Graphics Digest Sun Aug 23 03:00:22 PDT 1987 - Send submissions to Info-Graphics@ADS.ARPA - Send requests for list membership to Info-Graphics-Request@ADS.ARPA Today's Topics: DEC peripherals on HP workstations Stalking the wild HPGL. HPGL File Sharing HPGL File Snaring TIF/Painbrush format Creating color images ---------------------------------------------------------------------- Date: Sun, 16 Aug 87 12:26:15 edt From: talton@grasp.cis.upenn.edu Subject: DEC peripherals on HP workstations As an application for an HP workstation at the University of Pennsylvania, we hope to connect a 3-D display sytem for medical imaging (essentially a 3-D frame buffer for CAT scan data). We currently support DRV11 DMA communications for DEC VAX systems and hope that a compatible communications interface is available for the HP bus.(Hewlett Packard). Does anybody know if this is possible? What we would need is a DMA board that plugs into the HP, preferrably a DRV11 look-alike but not essential. Any experience with interfacing HP workstations to DEC-compatible peripherals would be appreciated. Please respond directly to talton@grasp.cis.upenn.edu not to the net. Thanks, Dave Talton Dynamic Digital Displays, Inc. 3508 Market St. Philadelphia, PA 19104 (215) 386-8164 ------------------------------ Date: Mon, 17 Aug 87 13:56:39 GMT From: lamonts@Sdsc.Arpa Subject: Stalking the wild HPGL. Sorry 'bout that, chief, but I think you're going to have to write a little assembly language program which installs itself as a device driver, perhaps for COM2. Unfortunately, the design of device driver is fairly messy thing for COM2. Unfortunately, the design of device driver is fairly messy thing which would be too involved to explain here. The best reference I've seen, though there may be better, is the Microsoft Press book "Advanced MS-DOS" by Ray Duncan. There is a fairly lengthy chapter on the design of device drivers. Hope this helps. If you have any questions, please Email me and I'll try to give you what help I can. spl BITNET: LAMONTS@SDSC INTERNET: LAMONTS@SDS.SDSC.EDU ------------------------------ Date: Mon, 17 Aug 87 07:26 CET From: "Matz Engstr\:m" Subject: HPGL File Sharing I am responslible for a device independent plotting package with some 40 different graphical devices called PLAM on our IBM/MVS system. I had the same idea as you about making any PC or workstationbased software make its hardcopy in the HPGL language and have it on diskette for later file transfer to the host. On the host I now have a program REPLOT29 that disseminates this file and replots it on any of the units on the host. REPLOT29 knows about 95% of the instructions of the HPGL dialect used for a HP7475. Our experience is that some packages like AutoCAD and Diagraph can store their HPGL on disk. Most of these think, for later unattended spool to the plotter. If the PC package can't store it on diskette it's much worse. The only solution we've seen yet is to put the PC back to back with another PC. And have their RS 232 ports connected, and making the second one act as plotter, and storing the data on diskette. It's expensive and not very elegant. But a custommer of mine has done it successfully. I am very curious to see if you get any smart tricks in DOS to do it. Matz Engstr:m Gothenburg Universities Computing Centre S-400 12 Gothenburg Sweden ------------------------------ Date: Fri, 21 Aug 87 07:55:09 MDT From: ZSYJKAA%WYOCDC1.BITNET@wiscvm.wisc.edu (Jim Kirkpatrick 307 766-5303) Subject: HPGL File Snaring I would like to thank all those who responded to my question last week on capturing HPGL plot files on PCs. I have accumulated the responses and will gladly distribute the lot to anyone who sends me a request (please include your address in the request, I still am not sure how to read RFC822 headers after they've been re-routed 18 times). The basic conclusions are that HP's Gallery software cannot do this by itself. The most frequent suggestion was the "daemon" approach, with several suggested sources and in one case the entire program was included. Another suggestion was to use the NCAR plot package and get to HPGL from GKS' CGM file. ------------------------------ Date: Fri, 21 Aug 87 08:02:08 MDT From: ZSYJKAA%WYOCDC1.BITNET@wiscvm.wisc.edu (Jim Kirkpatrick 307 766-5303) Subject: TIF/Painbrush format As a follow-up to my question last week about capturing HPGL files from HP's Gallery package, I was wondering if anyone could point me to a description of TIF (Tag Image File) format and/or "PC Paintbrush" file format. Gallery can save a plot in either format, and they might be alternatives to using HPGL to get to our color microfilmer. My guess is that the Paintbrush format is some sort of raster-based format, but I hadn't heard of TIF before. I suspect that handling Paintbrush files will be useful on it's own, even ignoring Gallery. ------------------------------ From: Milan DiPierro Subject: Creating color images Date: 20 Aug 87 21:09:36 GMT I am an undergraduate student at the University of Virginia. I am looking for information dealing with the display of color images. More specifically I am interested in converting black and white images into color. Recently I have read articles dealing with black and white movie colorization that touch upon this subject. Also there was a newspaper article in the New York Times describing the latest generation of copiers that willbe making full color spectrum copies. These articles were not very helpful in that they did not provide detailed descriptions of the processes involved or of the software used. Ideally, I would like to get a hold of some algorithms that deal with color display using the RGB color gamut, the IHS gamut, or any other gamut. Additionally any references to material that might prove helpfully would also be appretiated. ------------------------------ End of INFO-GRAPHICS ********************