waashk/20ng huggingface dataset:
In article <9304271755.AA23355@enet-gw.pa.dec.com> you write: >Anyone who thinks that TIFF is too complex hasn't dealt with >CGM, ASN.1, CDA, DCA, SGML, or any one of a number of other >very successful file format.  People seem perfectly capable >dealing with these others.  Well, yeah, but unlike TIFF they all do substantially more than encode rectangular bitmaps.  And the others are hardly trouble free.  I hear that it is quite common for CGM implementations not to interoperate.  The annoying thing about TIFF is that is that along with the 50 useful options, there are 100 stupid options.  The most egregious example is that rather than picking a byte order and bit order and using it consistently in all TIFF files, byte and bit order are options and all TIFF readers on all machines, no matter what their natural byte order, have to be prepared to do byte swapping.  There are four slightly different FAX formats -- again, any one of them would have been adequate.  RGB images can be stored by pixel or by component, complexity without function, etc, etc.  I also note that the TIFF doc says that Aldus' experiments show that LZW reliably compresses as well or better than any of the FAX formats, suggesting that none of the FAX formats are really useful.  What's worse, a lot of the formats aren't even implemented very well, e.g., LZW limits code words to 12 bits, while 14 or 16 bits would have provided substantially better compression.  And the LZW method compresses bytes rather than pixels.  But the absolute worst thing about TIFF is that any vendor can register proprietary TIFF codes and formats without even publicly documenting them. This means that there is NO WAY to write a TIFF reader that can reliably read all incoming TIFF files.  Some standard.
Hi I'm new to imaging, and my advisor and I would like to  do some 3D reconstructions.  We take slides (biological), and image them on a 486.  Then the software allows us to trace the outline of the objects  we want to save.  The outlines are stored as a TIFF file.  We would like to convert a group of these outlines into a  3D image.  We are unsure as to where to begin.  Someone mentioned that if we could convert the TIFF into a vector format then  we could view them in Autocad.  Any help would be greatly appreciated.
Edward d Nobles (ednobles@sacam.OREN.ORTN.EDU) wrote:  : I've been trying to view .tga files created in POVRAY.  I have the Diamond : SpeedStar 24 Video board (not the _24X_).  So far I can convert them to : jpeg using cjpeg and view them with CVIEW but that only displays 8 bit color. .. : Just want to see the darn things in real color...  I have an ATI ultra pro card, and have found that the easiest way to view true color images is using their windows drivers and something like winjpeg or photofinish.    If anyone has a non-windows solution, I'd love to hear it!
Perhaphs what Bill Gates and Steve Jobs are now is the result of the natural evolution of a "successful" hacker.  Either you make money, go to jail (Lee Feldenstein [sp?]), or just fade away as "Oh, that's uncle so-and-so who *really* likes computers...".  What a "computer hacker" is and does will change as long as the definition of the word "computer" continues to change.
I have a researcher who collecting electical impulses from the human heart through a complex Analog to Digital system he has designed and inputting this information into his EISA bus HP Vectra Computer running DOS and the Phar Lap DOS extender.   He want to purchase a very high-performance video card for 3-D modeling. He is aware of a company called Matrox but he is concerned about getting married to a company and their video routine library. He would hope some more flexibility: to choose between several card manufacturers with a standard video driver. He would like to write more generic code-  code that could be easily moved to other cards or computer operating systems in the future. Is there any hope? Any information would be greatly appreciated- Please, if possible, respond directly to internet mail  to raymaker@bcm.tmc.edu
Hi Everyone,  	I am looking for papers/articels/books or any other 	source of information about Parametric/Variational 	Design in CAD/Solid Modeling.  	Any suggetions/references would be greatly appreaciated.  	Thanks in advance.  	Jayesh
In article <NERONE.93Apr20085951@sylvester.cc.utexas.edu> nerone@ccwf.cc.utexas.edu (Michael Nerone) writes: >From: nerone@ccwf.cc.utexas.edu (Michael Nerone) >Subject: Re: Newsgroup Split >Date: 20 Apr 93 08:59:51 >In article <1quvdoINN3e7@srvr1.engin.umich.edu>, tdawson@engin.umich.edu (Chris Herringshaw) writes: > >  CH> Concerning the proposed newsgroup split, I personally am not in >  CH> favor of doing this.  I learn an awful lot about all aspects of >  CH> graphics by reading this group, from code to hardware to >  CH> algorithms.  I just think making 5 different groups out of this >  CH> is a wate, and will only result in a few posts a week per group. >  CH> I kind of like the convenience of having one big forum for >  CH> discussing all aspects of graphics.  Anyone else feel this way? >  CH> Just curious. > >I must agree.  There is a dizzying number of c.s.amiga.* newsgroups >already.  In addition, there are very few issues which fall cleanly >into one of these categories. > >Also, it is readily observable that the current spectrum of amiga >groups is already plagued with mega-crossposting; thus the group-split >would not, in all likelihood, bring about a more structured >environment. > >-- >   /~~~~~~~~~~~~~~~~~~~\/~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~\ >  /    Michael Nerone   \"I shall do so with my customary lack of tact; and\ > /   Internet Address:   \since you have asked for this, you will be obliged\ >/nerone@ccwf.cc.utexas.edu\to pardon it."-Sagredo, fictional char of Galileo.\   Maybe I should point out that we are not talking about c.s.amiga.*. Only comp.graphics.
I am very interested in hearing from all of you who are using or implementing 3-D interactive applications what types of 3-D widgets you would like to have in your applications.    A 3-D widget is usually located in the same scene as other 3-D objects of the  application.  It may let you  - manipulate application data, the camera,   3-D objects in the scene and so on, or - view the status of the application or 3-D objects   via the widget's shape, color, position, orientation and so on, or - do whatever I missed but you think is possible.  For example, a manipulative widget can be virtual trackball (shown as a partially transparent sphere) super-imposed on the object to be rotated. A feedback widget can be a ruler with ends anchored to 2 objects.  The length of the ruler changes as the objects move and a numeric value is shown on the ruler indicating the distance.  A widget can provide both manipulation and feedback.  For example, the ruler can be used to change the distance between the objects along its own axis.   Please e-mail me or post your opinions on 3-D interaction.  The information I gathered will help me design a 3-D UI construction tool. Your help is very much appreciated.
============================================================================== Has anyone created any interesting animations using Dmorph I seem to be unable to create anything that looks remotely realistic although this is probably due to the crappy GIF's at I am using (One of Captain Kirk and One of Spock), i'm a bit of a 'Trekker'.  What are the best type of pictures to use. thanks........             A.Situnayake
I am setting up a video-aid for a computer room for the teacher to share his display with the class.  I have seen people using video projector, TV sets and large monitor to do presentations before. I am told that there are three ways to connect video projector: composite, Y/C & RGB.  Can anyone explain to me the difference and their likely costs?  Please reply to my INETNET E-mail account as well as posting in bulletin: u129008@sparc20.nuc.edu.tw  I also like to know if there are TELNET or KERMIT for windows.
i am sorry, but this genoa card does nothing that the ATI ultra plus 2mb can't do, PLUS the ATI costs 330$US street price ....
To: ad994@Freenet.carleton.ca  JW> 1) Where is there a book or code that will teach me how JW> to read and write pcx,dbf,and gif files?  JW> 2) How do I access the extra ram on my paradise video board JW> so I can do paging in the higher vga modes ie: 320x200x256 JW> 800x600x256  JW> 3) anybody got a line on a good book to help answer these question?  Here are some that I have that are very good:    Graphics File Formats, Kay and Levine, ISBN 0-8306-3059-7   Supercharged Bitmapped Graphics, Rimmer, ISBN 0-8306-3788-5   Programmer's Guide to the EGA and VGA Cards, Ferraro,      ISBN 0-201-57025-4 (has a whole chapter on Paradise SVGA)  Dave
Wonko the Sane (oehler@yar.cs.wisc.edu) wrote:  : 	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.   	I'm pretty sure most industry strength image processing specific  systems (i.e. photo processing gear) use as much as 96 bits of color info. Why? Why not, oversampling is never a bad idea especially if the hardware's only task is image manipulation, and profressional photographers demand professional results.  : 	Also, to settle a bet with my roommate, what are SGI's flagship products?  I know of : Iris, Indigo, and Crimson, but what are the other ones, and which is their top-of-the-line? : (sadly, I have access to none of them.  Just a DEC 5000/25.  Sigh.)  	Strange question, but anyway, there's the VGX line, the newer Indigo^2, and the Onyx systems are the new big boys on the block (you can get a 24 processor system with twice the graphics performance of a reality engine). There's more, but I don't have my handy "periodic  table of sgi's" on me...
If some kind person has access to a mathematical package such as Mathematica, Maple,... I would like to ask you for the solution to the following problem. I sometimes have algebra problems like this where I would like a simplified symbolic solution. Is there a FTP-able package out there that can handle such beasts?      I would like to solve the following ray - Bezier patch intersection     for the scalar constant t in:          P                    + t * V                =  Q(u,w)          (origin point in 3D)       (dir vector 3D)      in terms of only:                   P            V            P                     and various scalars            (origin) ,   (dir 3D) ,   (i,j) 0 <= i,j <= 3      where:                              T     Q(u,w) = [U] [N] [B] [M]  [W]                   n  n-1  n-2   n-3       [U] = [ u  u    u     u ....     u  1 ]      ( 0.0 <= u <= 1.0 )                3  2           = [ u  u  u 1 ]    ( in my particular case )                  n  n-1  n-2   n-3             T       [W] = [ w  w    w     w ....     w  1 ]      ( 0.0 <= w <= 1.0 )                 3  2      T           = [ w  w  w 1 ]    ( in my particular case )                      T       [ N ] = [ M ]   =  | -1  3 -3  1 |     ( for my particular case )                          |  3 -6  3  0 |                          | -3  3  0  0 |                          |  1  0  0  0 |         [ B ] =  | P       P       P       P      | (control points in 3D space)                |  (0,0)   (0,1)   (0,2)   (0,3) |                |                                |                | P       P       P       P      |                |  (1,0)   (1,1)   (1,2)   (1,3) |                |                                |                | P       P       P       P      |                |  (2,0)   (2,1)   (2,2)   (2,3) |                |                                |                | P       P       P       P      |                |  (3,0)   (3,1)   (3,2)   (3,3) |                                            Thanx,
>> So they should sue the newspaper I got it from for printing it. >> The article didn't say anything about copyrights.  I'm sure the whole newspaper is copyrighted.  They could have gotten permission to use the image under their own copyright.
In article <C70zv4.9Hq@ddtopper.Dundee.NCR.COM>, stephenc says: > >In 3D Studio, is there any way to create refraction, diffraction etc ? > >I want to simulate such things as glass lenses, bottles etc.
Has anybody compiled VOGL-graphics library for IBM-PC? I need to call it from MS-Fortran but don't have MS-C to compile the sources.  Thanks for any help...
Sorry for wasting your time with a probably simple question, but I'm not an computer graphic expert. I want to read TIFF-Files with a PASCAL-program. The problem is, that the files I want to read are in compressed form  ( code 1, e.g. Huffman ). All books & articles I found describe only the plain (uncompressed) format. I don't know where to get the original TIFF specification, furthermore I haven't any access to a realy complete library. Can anybody direct me to a good book or (even better) to an  specification available via ftp ?  Thanks in advance - Thomas Wolf
Hello 	I have posted to this newsgroup once before and recieved a moderately helpful response on a couple of issues. This I appreciated very much . I would however like to know why it is that ther is simply NO  information out there on some subjects for the relativly novice graphics programmer. The subjects are  	1) How do you access the extra video memory on a video board. I know somwhere there aresome standard video bios calls that allow you to dothis. I have 1meg of memory on my board and according to all the books and info I have read I am only (at maximum) using 256k of it. There is a way to do this in standard VGA cause I have seen vidoe paging (written in assembly, which I don't know) written into apps hat use mode 13h. To get any speed at all you have to do this. How do I do it?  	2) The vesa standard. What gives here. I have read most of what the net has to offer on VESA and as far as coding for VESA goes most of the advice is cryptic at best. Where do I get public domain info that will tell me in "mostly plain" english how the vesa calls work.  	My biggest gripe is about number 1. I have bought graphics books, I have asked graphics professors, I have hunted the net through both gopher, and archie, I ahave asked apps programmers and it is like there is some lock on this information. Graphics programming books tell alot of programmiing algorithm information, but they always fall short of telling you how to really control the video bios. What are all the calls folks, I know there are people out there that know how to doall tis stuff. Where are you, and why haven't you written a book yet?   Please help  Thanks in advance
In article <1r3ih5INNldi@irau40.ira.uka.de>, S_BRAUN@IRAV19.ira.uka.de  (Thomas Braun) writes: |> I'm looking for shading methods and algorithms. |> Please let me know if you know where to get source codes for that.  'Illumination and Color in Computer Generated Imagery' by Roy Hall contains c source for several famous illumination models, including Bouknight, Phong, Blinn, Whitted, and Hall illumination models. If you want an introduction to shading you might look through the book 'Writing a Raytracer' edited by Glassner. Also, the book 'Procedural elements for Computer Graphics' by Rogers is a good reference. Source for code in these book are available on the net i  believe, you might check out nic.funet.fi or some site closer to you carrying  graphics related stuff.   Hope this is what you were asking for. --  Torgeir Veimo  Studying at the University of Bergen  "...I'm gona wave my freak flag high!" (Jimi Hendrix)
Hallo POV-Renderers ! I've got a BocaX3 Card. Now I try to get POV displaying True Colors while rendering. I've tried most of the options and UNIVESA-Driver but what happens isn't correct. Can anybody help me ?
Hey,     I am looking for C-algorithm, which decide,whether a 3D-Point is    inside a space which was defined by 8 x 3D-points.    With a space defined by 8 x 3D-points, I mean a space defined by    6 closed 3D meshes defined by 8 points. Like this :                _____              /    /|             /____/ |             |    | |             |    | /             |____|/      But in this simple example, the sides are parallel, but my problem,    the sides can be non parallel and the opposite sides must not have    the same size etc. Please mail me your informations !     Thanks for your great efforts        Oliver
In article <5103@moscom.com> mz@moscom.com (Matthew Zenkar) writes: >Cyberspace Buddha (cb@wixer.bga.com) wrote: >: renew@blade.stack.urc.tue.nl (Rene Walter) writes: >: >over where it places its temp files: it just places them in its >: >"current directory". > >: I have to beg to differ on this point, as the batch file I use >: to launch cview cd's to the dir where cview resides and then >: invokes it.  every time I crash cview, the 0-byte temp file >: is found in the root dir of the drive cview is on. > >I posted this as well before the cview "expert".  Apparently, he thought he >knew better. > >Matthew Zenkar >mz@moscom.com        Are we talking about ColorView for DOS here?        I have version 2.0 and it writes the temp files to its own      current directory.      What later versions do, I admit that I don't know.      Assuming your "expert" referenced above is talking about      the version that I have, then I'd say he is correct.      Is the ColorView for unix what is being discussed?      Just mixed up, confused, befuddled, but genuinely and      entirely curious....       Uncle Fester
>    a) XV can Load a 24 bit image, and display it in all it's >24 bit glory on 24 bit X displays. >    b) All other operations (Crop, Dither, Smooth, etc.) are not >supported on 24 bit images.  >how hard would this be?  Not very -- you just type "xloadimage" or "getx11" instead of "xv". --
In article <loT1rAPNBh107h@viamar.UUCP> rutgers!viamar!kmembry writes: >Read Issue #2 of Wired Magazine.  It has a long article on the "hype" of >3DO.  I've noticed that every article talks with the designers and how >"great" it is, but never show any pictures of the output (or at least >pictures that one can understand)  Gamepro magazine published pictures a few months ago and Computer Chronicles (a program that is syndicated to public tv stations around the nation) spent several minutes on it when it was shown at CES.  It was very impressive what it can do in real time.  John Munsch
Hello...      Does anyone know of any C or C++ function libraries in the public domain  that assist in parsing an AUTOCAD .dxf file?        Please e-mail.                                   Thanks,  --
merkelbd@sage.cc.purdue.edu (Brian Merkel) writes:  >In article <1993Apr11.132604.13400@ornl.gov> ednobles@sacam.OREN.ORTN.EDU (Edward d Nobles) writes: >> >>I've been trying to view .tga files created in POVRAY.  I have the Diamond >>SpeedStar 24 Video board (not the _24X_).  So far I can convert them to >>jpeg using cjpeg and view them with CVIEW but that only displays 8 bit color. >> >>I'm looking for some way to convert and/or view them in 24 bit. >> >>I have UNIVESA (uvesa31.zip) and the DVPEG viewer but I don't get anything. >>Perhaps I am not setting up UNIVESA properly?  If anyone has ideas about this >>please feel free to enlighten me... >> >>Just want to see the darn things in real color...  >Image Alchemy (aka alchemy) will view the TGA files that POV outputs > and just about any other format you can think of. It will also convert > between all these. It's shareware, so it's probably available by FTP > somwhere out there in netland...          Yep... Alchemy works fine on my Tseng400+DAC, but I think I remember reading that it only displays in 15-bit or so.  Of course, that's still 32K colors which is nothing to sneeze at.  Use the --v flag.   -- -----------------------------------------------------------------------------  Neal Miller         | "Why not go mad?"  | millernw@craft.camp.clarkson.edu  Clarkson University |     - Ford Prefect |     dark@craft.camp.clarkson.edu
Try spectrum.xerox.com [192.70.225.78] in /pub/map/dem.
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
Hi, netters  I am looking for source code that can reads the ascii file or bitmap file and produced the thinned image. For example, to preprocess the character image I want to apply thinning algorithm.
>In article <C65wBp.6K4@taurus.cs.nps.navy.mil> adaptive@cs.nps.navy.mil (zyda res acct) writes: >>>Hi, there! >>>I am interested in facial animation and want to implement some program about this area. >>>But I don't have any 3-D information for the face. >>>I am looking for some 3D images of face. >> >>Try getting the Cyberware_demo via ftp which contains 3D images of the >>face. >> > >What is the copyright status of this data?  Are there restrictions regarding the >uses they can be put to? > >Kaveh > > >--  >Kaveh Kardan >kardank@ERE.UMontreal.CA  Kaveh,  all of the data included with in the Cyberware_demo is non-proprietary, use it as you like. I just ask that you give us credit if you use it in a research paper/project and send us the results.  thanks,  geo Cyberware --  george dabrowski Cyberware Labs
I'd be interested in a copy of this code if you run across it. (Mail to the author bounced)  > / hpldsla:comp.graphics / ricky@vnet.ibm.com (Rick Turner) / 12:53 am  May 13,  1993 /  > I fooled around with this problem a few years ago, and implemented a  > simple method that ran on a PC.  > was very simple - about 40 or 50 lines of code.  . . .  > Somewhere I still have it  > and could dig it out if there was interest.  >  > Rick
There are JPEG viewers that are windows based and therefore need no hardware specific drivers beyond those provided in windows. I got mine from the Library of Congress in connection with their online exhibit of books from the Vatican library. See a previous message in this newgroup about that.
In article <1pscti$aqe@travis.csd.harris.com> srp@travis.csd.harris.com (Stephen Pietrowicz) writes: >... >How do you go about orienting all normals in the same direction, given a  >set of points, edges and faces?   Look for edge inconsistencies.  Consider two vertices, p and q, which are connected by at least one edge.  If (p,q) is an edge, then (q,p) should *not* appear.    If *both* (p,q) and (q,p) appear as edges, then the surface "flips" when you travel across that edge.  This is bad.    Assuming (warning...warning...warning) that you have an otherwise acceptable surface - you can pick an edge, any edge, and traverse the surface enforcing consistency with that edge.        0) pick an edge (p,q), and mark it as "OK"     1) for each face, F, containing this edge (if more than 2, oops)        make sure that all edges in F are consistent (i.e., the Face        should be [(p,q),(q,r),(r,s),(s,t),(t,p)]).  Flip those which        are wrong. Mark all of the edges in F as "OK",        and add them to a queue (check for duplicates, and especially        inconsistencies - don't let the queue have both (p,q) and (q,p)).      2) remove an edge from the queue, and go to 1).  If a *marked* edge is discovered to be inconsistent, then you lose.  If step 1) finds more than one face sharing a particular edge, then you lose.       Otherwise, when done, all of the edges will be consistent.  Which means that all of the surface normals will either point IN or OUT.  Deciding which way is OUT is left as an exercise...