waashk/20ng huggingface dataset:
Does anyone know how to convert a targa or similar 24 bit picture into a list  of R G B values and then convert back to targa after doing operations on the p ixels R G B codes. ex.  Targa ---->000100255pixel 1 001200201pixel 2etc.... If no one can help me with this could someone explain how the 24 bit data is st ored in the targa file and also how its stored in the 8 bit targas.   Thanks
Update on location!!  Directory should be: public/virtual-worlds!! ^^^^^^  Sorry! :-)
Looking for a TIFF/EPS of a DNA Helix.  E-mail any auggestions, please.
I have a Diamond Speedstar 24X board that I want to program for 24 bit 640x480 graphics, or possibly 800x600 16 bit color. Does anybody have any libraries supporting these modes on this board? Even somes simple routines to set the graphics mode and plot individual pixels would be a great help. I plan to use the routines with djgp.     Thanks in advance. Please respond also via e-mail.
You can use PBM's 'rawtopgm' to convert three raw (r, g, b) files to pgm format. Then you can use pgm3toppm to convert the pgm files to a composite ppm file, and feed this to cjpeg for compression. Slow, and circuitous, but it will work.
Howdy all,  oehler@yar.cs.wisc.edu (Wonko the Sane) writes:  >	I was recently talking to a possible employer ( mine! :-) ) and he made a reference to a >48-bit graphics computer/image processing system.  I seem to remember it being called IMAGE or >something akin to that.  Anyway, he claimed it had 48-bit color + a 12-bit alpha channel.  That's >60 bits of info--what could that possibly be for?  Specifically the 48-bit color?  That's 280 >trillion colors, many more than the human eye can resolve.  Is this an anti-aliasing thing?  Or >is this just some magic number to make it work better with a certain processor.  Hmm... 48 bit aye? Well, it beats a 32-bit design for thee sake of ellegance. 48 bit means 16 bits per primary colour. The 2^48 nr of colours is a bit misleading. It makes more sense to see it as 65536 possible shades of pure red. This might actually make some sense, since 256 shades of red (24 bit colours)  may produce visible 'jumps' in intensity. Then again, a byte per primary colour for each pixel is the most elegant way  of doing colour graphics, because it leaves ya such a tidy (and fast) program code.  	Take care,  		Bram
fineman@stein2.u.washington.edu (Twixt your toes) writes:  | I'm using "rayshade" on the u.w. computers here, and i'd like input | from other users, and perhaps swap some ideas.  I could post | uuencoded .gifs here, or .ray code, if anyone's interested.  I'm having | trouble coming up with colors that are metallic (i.e. brass, steel) | from the RGB values.
On sunsite.unc.edu in pub/multimedia/utilities/unix find   mpeg_play-2.0.tar.Z.  I find for mono it works best as mpeg_play -dither threshold     though you can use            mpeg_play -dither mono  Face it, this is not be the best viewing situation.  Also someone has made a patch for mpeg_play that gives two more mono modes  (mono2 and halftone).  They are by jan@pandonia.canberra.edu.au (Jan Newmarch). And the patch can be found on csc.canberra.edu.au (137.92.1.1) under /pub/motif/mpeg2.0.mono.patch.
I have a lots of .cgm files produced by NCAR Graph Utility V3.00.  They are all color graphs, and I want to print them out.   The printers I own are Postscript, and HP 7475a. Anyone who have   experiences in this please tell me, e-mail me will be very nice.  Or if someone knows how to convert those .cgm  files into .gif  pcx, .bmp .... , it will helps a lot.
In-Reply-To: <20APR199312262902@rigel.tamu.edu> lmp8913@rigel.tamu.edu (PRESTON, LISA M)
andrey@cco.caltech.edu (Andre T. Yew) writes:  >d9hh@dtek.chalmers.se (Henrik Harmsen) writes:  >>1-4 bits per R/G/B gives horrible machbanding visible in almost any picture.  >>5 bits per R/G/B (32768, 65000 colors) gives visible machbanding  >>color-gradient picture has _almost_ no machbanding. This color-resolution is   >>see some small machbanding on the smooth color-gradient picture, but all in all, >>There _ARE_ situiations where you get visible mach-banding even in >>a 24 bit card. If >>you create a very smooth color gradient of dark-green-white-yellow >>or something and turn >>up the contrast on the monitor, you will probably see some mach-banding.  >    While I don't mean to damn Henrik's attempt to be helpful here, >he's using a common misconception that should be corrected.  >    Mach banding will occur for any image.  It is not the color >quantization you see when you don't have enough bits.  It is the >human eye's response to transitions or edges between intensities. >The result is that colors near the transistion look brighter on >the brighter side and darker on the darker side.  >--Andre  Yeah, of course... The term 'mach banding' was not the correct one, it should've been 'color quantization effect'. Although a bad color quantization effect could result in some visible mach-bands on a picture that was smooth before it was quantizised.
Hi,  I've noticed that if you only save a model (with all your mapping planes positioned carefully) to a .3DS file that when you reload it after restarting 3DS, they are given a default position and orientation.  But if you save to a .PRJ file their positions/orientation are preserved.  Does anyone know why this information is not stored in the .3DS file?  Nothing is explicitly said in the manual about saving texture rules in the .PRJ file.  I'd like to be able to read the texture rule information, does anyone have  the format for the .PRJ file?  Is the .CEL file format available from somewhere?  Rych
I was wondering if anyone knows of a graphics package for the PC that will do compositing of a series of pictures?  What I mean by "compositing" is, say I have a live video clip (digitized) panning around a living room, and a computer-generated bird flying around the screen.  I want to combine these two series of pictures so that everywhere where the bird frames are black, I want the living room picture to show through.  Yes, I realize I can do this with a genlock, and I do own a genlock, but I want to be able to do manual compositing also.  It's ok if I have to composite one frame at a time; I assumed I'd have to do that anyway.  But being able to composite a series of frames would be even better.
ULTRIX/X11R4 to plot surfaces and contour plots from a set of {x,y,z}. I would really appreciate any hint on the name of such a plotting program and where to find it.    Thanks for your help.
I have a little question:  I need to convert RGB-coded (Red-Green-Blue) colors into HVS-coded (Hue-Value-Saturnation) colors. Does anyone know which formulas to use?  Thanks!
I am looking for a public domain 3d viewer.  It does not have to be very fancy.  The features I want is simple wireframe display, flat shading,  simple transformation.  It would be nice to have hidden line.
I use Arts & Letters on a PC and if you make use of the Tracing Preferences it traces beautifully. BUT - there's a trick to tracing. I've traced entire cartoon images into custom clip art, but you can't expect to just point to the image and get it just like that, it takes a little work (in some cases a lot of work). You need to trace a drawing piece by piece, and then put it  together... it's kinda hard to explain in type, but if you're ever in Reno I can give you a little demonstration!
Can somebody point out to me where I can find the specs for .GL and .FLI files found on PC's?
In article 16598@rz.uni-jena.de, hahm@fossi.hab-weimar.de (peter hahm) writes: > > >RADIOSITY SOURCES WANTED !!! >============================ > >When I read the comp.graphics group, I never found something about  >radiosity. Is there anybody interested in out there? I would be glad  >to hear from somebody. >I am looking for source-code for the radiosity-method. I have already >read common literature, e. g.Foley ... . I think little examples could  >help me to understand how radiosity works. Common languages ( C, C++,  >Pascal) prefered. >I hope you will help me! > >Yours >Peter  >   Peter,  there's a radiosity package ahead. The only problem is: there  are a few miles to sail ... ;-^  Let's be serious... I'm working on a radiosity package, written in C++. I would like to make it public domain.  I'll announce it in c.g. the minute I finished it.   That were the good news. The bad news: It'll take another 2 months (at least)  to finish it.   In the meantime you may have a look at the file   Radiosity_code.tar.Z located at   compute1.cc.ncsu.edu  (there are some other locations; have a look at archie to get the nearest)  Hope that'll help.  Yours  Stephan    ----------------------------------------------------------------------------   Stephan Amann     SIG Computer Graphics, University of Berne, Switzerland            amann@iam.unibe.ch 	   Tel +41 31 65 46 79	   Fax +41 31 65 39 65   Projects: Radiosity, Raytracing, Computer Graphics
Sorry about not mentioning platform... my original post was to mac.programmer, and then decided to post here to comp.graphics.  I'd like the 3D software to run on primarily Mac in either C, Object Pascal (Think or MPW). But, I'll port to Windows later, so a package that runs on Mac and has a Windows version would be ideal.  I'm looking for a package that has low upfront costs, and reasonable licensing costs... of course :)
Does anyone on this group use this program? It stacks up pretty well to  Corel Draw, and since I don't have a CDROM, it was the best buy...
In article <1993May1.092058.1@aurora.alaska.edu> pstlb@aurora.alaska.edu writes: > >  I put it to you thus:  Where HAS the hacker ethic gone?  If it still exists, >where?  And, if it DOES exist, why are those who call themselves "hackers" >allowing this to perpetuate itself?  Why are they not creating new, innovative, >interesting ideas to stop the SOS from maintaining its choke hold on the >computer industry?  How about the GNU people, handing out very good, free software?  I've also distributed two decent-sized programs myself, the Go player Fumiko (at ftp.u.washington.edu) and the Genetic Neural Network Programmer CEREBRUM (somewhere out there).  I've only had time to write these programs because of scholarships and grants.  The intended benefit to society, or a loophole in the system?
Remember that the UNIX versions of PoV don't create TGA but QRT file format output by default. +ft is needed to make TGA.
In article <1993Apr15.164940.11632@mercury.unt.edu> Sean McMains <mcmains@unt.edu> writes: >In article <1993Apr15.144843.19549@rchland.ibm.com> Ricardo Hernandez >Muchado, ricardo@rchland.vnet.ibm.com writes: >>   And CD-I's CPU doesn't help much either.  I understand it is >>a 68070 (supposedly a variation of a 68000/68010) running at something >>like 7Mhz.  With this speed, you *truly* need sprites. > >Wow! A 68070! I'd be very interested to get my hands on one of these, >especially considering the fact that Motorola has not yet released the >68060, which is supposedly the next in the 680x0 lineup. 8-D  Don't get too excited; Signetics, not Motorola, gave the 68070 its number. The 68070, if I understand rightly, uses the 68000 instruction set, and has an on-chip serial port and DMA.  (It will run at up to 15 MHz--I'm typing at a computer using a 68070 running at that rate, so I know that it can do so--so I seriously doubt the clock rate that ricardo@rchland.vnet.ibm.com claims.)
Has anyone written or seen a C library or C++ class for fixed-point math, or good articles about same?  I pretty much know how to do this, but I have a few other wheels to invent at the moment...  Thanks!
Does anyone know the phone number to a place where i can get a VGA passthrough?  	I want to hook up my VGA card to my XGA card (whcih you can can). All I need is the cable that connects them.  It is the same type of cable that you would connect from your VGA card to say a Video Blaster or something.
wing the suggestion of Stu Lynne, I have posted the Image File Format executable and source code to alt.sources.
In article <1993Apr22.021708.13381@hparc0.aus.hp.com>, doug@hparc0.aus.hp.com (Doug Parsons) writes: |> FOMBARON marc (fombaron@ufrima.imag.fr) wrote: |> : Are there significant differences between V2.01 and V2.00 ? |> : Thank you for helping |>  |>  |> No.  As I recall, the only differences are in the 3ds.set parameters - some |> of the defaults have changed slightly.  I'll look when I get home and let |> you know, but there isn't enough to actually warrant upgrading. |>  |> douginoz  Wrong...the major improvements for 2.01 and 2.01a are in the use of IPAS routines for 3d studio.  They have increased in speed anywhere from 30-200% depending on which ones you use.
I need triangulized data of some nice looking model with some texture mapping. It would be better if the parametric values of each vertex( for the surface before triangulized ) are avaliable along with the Euclidean points so that we could use them for texture mapping.
I need a graphics display program that can take as a parameter the name of the file to be displayed, then just display that image and then quit.  All of the other graphics display programs come up with a menu first or some other silliness.  This program is going to be run from within another program.  I have lots of memory and VGA color.  Any graphics format will do.  Has anyone heard of such a beast?  					Keith
Does anybody know if there are any good 2d-graphics packages 	available for IBM RS/6000 & AIX ? I'm looking for something 	like DEC's GKS or Hewlett-Packards Starbase, both of which 	have reasonably good support for different output devices 	like plotters, terminals, X etc.  	I have tried also xgks from X11 distribution and IBM's implementation 	of Phigs. Both of them work but we require more output devices 	than just X-windows.  	Our salesman at IBM was not very familiar with graphics and 	I am not expecting for any good solutions from there.   		Ari  ---
This seems to be a simple problem but I just cannot solve it. I wrote a C program to draw some polygons on the screen, and I want to  print it on my printer. So, I press "print-screen" on the keyboard. The problem is the printer just print out some ASCII characters. Is there any other way to print the screen without using "print-screen"???? Please help!
I read a mesg. somewhere on GENIE about Intel coming out with a  graphics standard called PCI, which would supplant VESA standards.  Is this a rumor, or is there some substance to it. If any of y'all have heard of this "standard" please e-mail me on how I might obtain more info
For those who are interested in Ray Traced pictures, there is a nice example on alt.binaries.pictures.misc. The file is called Poolball.gif. It shows a pooltable with... YES! ... poolballs! Resolution: 1024x768,  colours: 256 (only). The TGA (24 bit) version is also available, but a bit big (2.4Mb) to post. The picture is created with POV-ray.     Enjoy!   _Gerco_ __cgschot@cs.ruu.nl__
In article <1993Apr19.160944.20236W@baron.edb.tih.no> havardn@edb.tih.no (Haavard Nesse,o92a) writes: > >Could anyone tell me if it's possible to save each frame >of a .gl (grasp) animation to .gif, .jpg, .iff or any other >picture formats. >        If you have the GRASP animation system, then yes, it's quite easy. You simply use GLIB to extract the image (each "frame" in a .GL is actually a complete .PCX or .CLP file), then use one of MANY available utilities to convert it.  If you don't have the GRASP package, I'm afraid I can't help you.  Sorry.      By the way, before you ask, GRASP (GRaphics Animation System for Professionals) is a commercial product that sells for just over US$300 from most mail-order companies I've seen.  And no, I don't have it.  :)                                                    Corey Webb
In article <25335@alice.att.com> td@alice.att.com (Tom Duff) writes: >ulrich@galki.toppoint.de wrote: >> Does anyone have any  other suggestions where the 42 came from? >Forty-two is six times nine.  ...for very small values of six and nine.
In article <1r1cqiINNje8@srvr1.engin.umich.edu> tdawson@llullaillaco.engin.umich.edu (Chris Herringshaw) writes: > >Sorry for the repeat of this request, but does anyone know of a good >free/shareware program with which I can create ray-traces and save >them as bit-mapped files?  (Of course if there is such a thing =) > >Thanks in advance > >Daemon  There are 2 books published by M&T BOOKS that come with C source code on floppies.  They are:  Programming In 3 Dimensions, 3-D Graphics, Ray Traycing, and Animation by: Christopher D. Watkins and Larry Sharp.  Photorealism and Ray Tracing in C by: Christopher D. Watkins, Stephen B. Coy, and Mark Finlay.  I have the first book and it is a great intro to 3-D, Ray Tracing and Animation.  Most of the programs are on the disk compiled and ready to run.  I have only glanced at the second book but it also appears to be good.  Hope this helps! Mark Larsen  --------------------------------------------------------------------------- markl@hunan.rastek.com
In article <1993Apr19.121925.14451@microware.com>, jejones@microware.com (James Jones) writes: |> In article <1993Apr15.164940.11632@mercury.unt.edu> Sean McMains <mcmains@unt.edu> writes: |> >In article <1993Apr15.144843.19549@rchland.ibm.com> Ricardo Hernandez |> >Muchado, ricardo@rchland.vnet.ibm.com writes: |> >>   And CD-I's CPU doesn't help much either.  I understand it is |> >>a 68070 (supposedly a variation of a 68000/68010) running at something |> >>like 7Mhz.  With this speed, you *truly* need sprites. |> > |> >Wow! A 68070! I'd be very interested to get my hands on one of these, |> >especially considering the fact that Motorola has not yet released the |> >68060, which is supposedly the next in the 680x0 lineup. 8-D |>  |> Don't get too excited; Signetics, not Motorola, gave the 68070 its number. |> The 68070, if I understand rightly, uses the 68000 instruction set, and has |> an on-chip serial port and DMA.  (It will run at up to 15 MHz--I'm typing |> at a computer using a 68070 running at that rate, so I know that it can |> do so--so I seriously doubt the clock rate that ricardo@rchland.vnet.ibm.com |> claims.) |>  |> 	James Jones     Just because the 68070 can run upto 15Mhz doesn't mean the CD-I is running at that speed.  I said -> I understand it is a 68070 running at something like 7Mhz.  I am not sure, but I think I read this a long time ago.     Anyway, still with 15Mhz, you need sprites for a lot of tricks for making cool awesome games (read psygnosis).
What is the phone number for Alias? A toll-free number is preferred, if available.  Thanks
In article <C51Eyz.4Ix@optimla.aimla.com> lex@optimla.aimla.com (Lex van Sonderen) writes: >In article <h1p4s4g@zola.esd.sgi.com> erik@westworld.esd.sgi.com (Erik Fortune) writes: >>> better than CDI >>*Much* better than CDI. >Of course, I do not agree.  It does have more horsepower.  Horsepower is not >the only measurement for 'better'.  It does not have full motion, full screen >video yet.  Does it have CD-ROM XA? > >>> starting in the 4 quarter of 1993 >>The first 3DO "multiplayer" will be manufactured by panasonic and will be  >>available late this year.   A number of other manufacturers are reported to  >>have 3DO compatible boxes in the works. >Which other manufacturers? >We shall see about the date.  A 3DO marketing rep. recently offered a Phillips marketing rep. a $100 bet that 3DO would have boxes on the market on schedule.  The Phillips rep. declined the bet, probably because he knew that 3DO players are already in pre-production manufacturing runs, 6 months before the commercial release date.  By the time of commercial release, there will be other manufacturers of 3DO players announced and possibly already tooling up production.  Chip sets will be in full production.  The number of software companies designing titles for the box will be over 300.  How do I know this?  I was at a bar down the road from 3DO headquarters last week.  Some folks were bullshitting a little too loudly about company business.  >>All this information is third hand or so and worth what you paid for it:-). >This is second hand, but it still hard to look to the future ;-). > >Lex van Sonderen >lex@aimla.com >Philips Interactive Media  ^^^^^^^^^^^^^^^^^^^^^^^^^
In article <1r1cqiINNje8@srvr1.engin.umich.edu>, tdawson@llullaillaco.engin.umich.edu (Chris Herringshaw) wrote: >  >  > Sorry for the repeat of this request, but does anyone know of a good > free/shareware program with which I can create ray-traces and save > them as bit-mapped files?  (Of course if there is such a thing =) >  > Thanks in advance >  > Daemon  PPPPP    OOOOO  V     V  Persistance Of Vision Raytracer. P    P  O     O V     V P    P  O     O V     V PPPPP   O     O V     V P       O     O  V   V P       O     O   V V P        OOOOO     V  Available on archie and wuarchive in graphics type directories.  PS It's freeware.  --
I need the file format for cc:Mail file formats - it seems to be PCX-based, but with a twist: only the first page of a multi-page fax will come out readable. The other pages disappear. The format seems to be 'proprietary'.  Anybody got any clues? I have to give my email FAXes to my secretary in order to get 'em unscrambled. I want a filter from cc:Mail to .p[nb]m.  Come to think of it, p[nb]m to cc:Mail would be nice too.
In article <2054@mwca.UUCP> bill@mwca.UUCP (Bill Sheppard) writes: )Many high-end graphics cards come with C source code for doing basic graphics )sorts of things (change colors, draw points/lines/polygons/fills, etc.).  Does )such a library exist for generic VGA graphics cards/chips, hopefully in the )public domain?  This would be for the purpose of compiling under a non-DOS )operating system running on a standard PC.  Check the server code for X11R5.  (or "XFree86")
Posted on behalf of Craig Southeren who does not have access to a net account: -------------------------------------------------------------------  Can anyone provide me with a colour space transform that would emulate the effects of red/green colour blindness? I have had a quick look in the computer graphics literature with no results. Perhaps someone who has access to medical information could help?  I would like to write a program (probably a PPM filter) to allow previewing of images to check for sufficient contract for colour blind users. Not being colour blind myself, this is a bit difficult!  Please email replies - I will summarise and repost if there is sufficient interest      Craig   --------------------------------------------------------------------- Craig Southeren                      |  "You can have it good, cheap, Chief Engineer,                      |   or fast. Any two." Picture Start Productions            |      Arthur C. Clarke email: c/- geoffw@ucc.su.OZ.AU       |  phone: +61 2 959 5550                |  "Educate - don't legislate"
How does the 16 bit color of HDTV work ? It can not be 5 bit Red Green and Blue like on the Macintosh. This gives only 64 gray levels.  Apple also has developed a point-point network that is around 200MB (not sure if it is bits or bytes) per sec.