Post by thread:[OT] 3d chopper

You are going to have to write that one. I've been looking for years. My idea was to scan 3D by placing an object on a turn table and watching it with a frame grabber / video camera as it turned. By noticing how much a given pixel moved from frame to frame, the depth of the object at that point could be calculated. See: http://techref.massmind.org/robotics under the eyes section. --- James Newton spam_OUTjamesnewtonTakeThisOuTgeocities.com 1-619-652-0593 http://techref.massmind.org NEW! FINALLY A REAL NAME! Members can add private/public comments/pages ($0 TANSTAAFL web hosting) {Original Message removed}

Wagner, I don't suppose it's feasible in your case to do a real CAT scan of the object in question? An excellent open source software package that's often used to process CAT scans and MRIs is IBM's Open Visualization Data Explorer (OpenDX) - see http://www.opendx.org/. The site has a gallery which gives some idea of the software's uses, but some relevant examples include its use in commercial and academic CAT scan and MRI data processing, at http://opendx.npaci.edu/publications/medical/VisExamples/RTP.html and http://iacl.ece.jhu.edu/agg/projects/brain.html; as well as the virtual reconstructions of fossils, such as the skull of a northwest African Middle Pleistocene hominid, at http://opendx.npaci.edu/publications/anthropology/human-fossils/index.html. However, in all these examples, the 3D data was obtained using MRI or CT-type scans. Once you have the data in 3D form, the software will easily produce slices for you, and even let you do things like animate a slice travelling through the object from one side to the other. The software is highly programmable, using a powerful visual programming language, and an underlying macro language, so it's possible you could use that to do your integration of images into 3D. You might try asking about that on the opendx-users mailing list - someone there might have dealt with that. Anton > {Original Message removed}

Try PhotoModeler. I can fish out their phone number for you, but it'd probably be quicker just to do a web search. The program is quite good at the 3-D wireframe portion of this. I don't remember if they can cut cross-sections, but do know that they can export a dxf file, so there are several options for doing the x-sections if they can't. Holler back at me if you can't find the contact address or phone number. I think they're in Vancouver. All the best, Jim Wagner Lipnharski wrote: > Two weeks looking for a software package that can integrate 5 or more > simple outlined images taken from a real image from different angles, > and compose them into a 3d wire frame. Then, I need to chop this 3d > image in horizontal (or vertical) slices as a catscan does. As we have > here in Piclist all sort of crazy persons, I believe someone should know > something to help me. Tks. Wagner.

"James R. Cunningham" wrote: > > Try PhotoModeler. I can fish out their phone number for you, but it'd > probably be quicker just to do a web search. The program is quite good at > the 3-D wireframe portion of this. I don't remember if they can cut > cross-sections, but do know that they can export a dxf file, so there are > several options for doing the x-sections if they can't. Holler back at me > if you can't find the contact address or phone number. I think they're in > Vancouver. They are: http://photomodeler.com/ Contact: Eos Systems Inc. 205-2034 West 12th Ave Vancouver, V6J 2G2 tel:604-732-6658 fax:604-732-6642 e-mail: .....questionsKILLspam@spam@photomodeler.com Pricey but turnkey. $895USD. > > Two weeks looking for a software package that can integrate 5 or more Must be using the wrong search engine or keywords. They turned up in my first set of hits (Altavista "3D near model* near photo* near digiti*") > > simple outlined images taken from a real image from different angles, > > and compose them into a 3d wire frame. Then, I need to chop this 3d > > image in horizontal (or vertical) slices as a catscan does. As we have > > here in Piclist all sort of crazy persons, I believe someone should know > > something to help me. Tks. Wagner.

Go take a peek at Rhino http://www.rhino3d.com Best 3D CAD/ Modelling package i've tried especially at under USD800.00 Learning curve is unbelievably fast, even better if u're familiar with AutoCad. What u're trying to do is build a model by cutting out thin layers and stacking them up. Sterolithography or SLA does the same at 0.1mm slices. Rhino outputs SLA files so u might be able use it. If u're going to be using thicker slices, Rhino easily let's u extract an outline shape or plane from a 3D object. Cheers Terry At 12:13 PM 2/25/00 -0500, you wrote: >Two weeks looking for a software package that can integrate 5 or more >simple outlined images taken from a real image from different angles, >and compose them into a 3d wire frame. Then, I need to chop this 3d >image in horizontal (or vertical) slices as a catscan does. As we have >here in Piclist all sort of crazy persons, I believe someone should know >something to help me. Tks. Wagner. >

Terry wrote: > Go take a peek at Rhino > > http://www.rhino3d.com http://www.rhino3d.com/ If you put in the part you get a hotlink with most modern e-mail clients. See the difference? > Best 3D CAD/ Modelling package i've tried especially at under USD800.00 Yes, but it doesn't work with photos. It relies on 3rd part digitizers to get a 3D model to work with (AFAICT) > Learning curve is unbelievably fast, even better if u're familiar with > AutoCad. What u're trying to do is build a model by cutting out thin layers > and stacking them up. Sterolithography or SLA does the same at 0.1mm > slices. Rhino outputs SLA files so u might be able use it. If u're going to > be using thicker slices, Rhino easily let's u extract an outline shape or > plane from a 3D object. Looks like a nice package. Yet another distraction.... See also http://www.3dconstruction.com/ for another photo based 3D digitizing package. {Quote hidden}> > Cheers > Terry > > At 12:13 PM 2/25/00 -0500, you wrote: > >Two weeks looking for a software package that can integrate 5 or more > >simple outlined images taken from a real image from different angles, > >and compose them into a 3d wire frame. Then, I need to chop this 3d > >image in horizontal (or vertical) slices as a catscan does. As we have > >here in Piclist all sort of crazy persons, I believe someone should know > >something to help me. Tks. Wagner. Funny thing is I was just discussing this topic (3D from photos) with a friend last night. So anyone have some suggestions for inexpensive 3D milling machines or URLs to suitable software for DIY construction?

I downloaded Rhino and dedicated few time during the weekend... look what I did in few hours... http://www.ustr.net/rhino/ ps: for the distracted... what you see there, are not pictures... just 3D rendering... :) Robert Rolf wrote: {Quote hidden}> > Terry wrote: > > Go take a peek at Rhino > > > > http://www.rhino3d.com > http://www.rhino3d.com/ > If you put in the part you get a hotlink with most > modern e-mail clients. See the difference? > > > Best 3D CAD/ Modelling package i've tried especially at under USD800.00 > > Yes, but it doesn't work with photos. It relies on 3rd part > digitizers to get a 3D model to work with (AFAICT) > > > Learning curve is unbelievably fast, even better if u're familiar with > > AutoCad. What u're trying to do is build a model by cutting out thin layers > > and stacking them up. Sterolithography or SLA does the same at 0.1mm > > slices. Rhino outputs SLA files so u might be able use it. If u're going to > > be using thicker slices, Rhino easily let's u extract an outline shape or > > plane from a 3D object. > > Looks like a nice package. Yet another distraction.... > > See also > http://www.3dconstruction.com/ > > for another photo based 3D digitizing package. > > > > > Cheers > > Terry > > > > At 12:13 PM 2/25/00 -0500, you wrote: > > >Two weeks looking for a software package that can integrate 5 or more > > >simple outlined images taken from a real image from different angles, > > >and compose them into a 3d wire frame. Then, I need to chop this 3d > > >image in horizontal (or vertical) slices as a catscan does. As we have > > >here in Piclist all sort of crazy persons, I believe someone should know > > >something to help me. Tks. Wagner. > > Funny thing is I was just discussing this topic (3D from photos) > with a friend last night. > > So anyone have some suggestions for inexpensive 3D milling machines > or URLs to suitable software for DIY construction?

Hmm. I'm impressed, Wagner. I've also tried Rhino and I find it to be a great package, but I think I would have used much more time than just a few hours modeling that Dremel. How did you get the text correct? Did you use any special fonts, or did you draw the letters? -¯yvind {Quote hidden}> I downloaded Rhino and dedicated few time during the weekend... look > what I did in few hours... http://www.ustr.net/rhino/ ps: for the > distracted... what you see there, are not pictures... just 3D > rendering... :) > > Robert Rolf wrote: > > > > Terry wrote: > > > Go take a peek at Rhino > > > > > > http://www.rhino3d.com > > http://www.rhino3d.com/ > > If you put in the part you get a hotlink with most > > modern e-mail clients. See the difference? > > > > > Best 3D CAD/ Modelling package i've tried especially at under > > > USD800.00 > > > > Yes, but it doesn't work with photos. It relies on 3rd part > > digitizers to get a 3D model to work with (AFAICT) > > > > > Learning curve is unbelievably fast, even better if u're familiar > > > with AutoCad. What u're trying to do is build a model by cutting > > > out thin layers and stacking them up. Sterolithography or SLA does > > > the same at 0.1mm slices. Rhino outputs SLA files so u might be > > > able use it. If u're going to be using thicker slices, Rhino > > > easily let's u extract an outline shape or plane from a 3D object. > > > > Looks like a nice package. Yet another distraction.... > > > > See also > > http://www.3dconstruction.com/ > > > > for another photo based 3D digitizing package. > > > > > > > > Cheers > > > Terry > > > > > > At 12:13 PM 2/25/00 -0500, you wrote: > > > >Two weeks looking for a software package that can integrate 5 or > > > >more simple outlined images taken from a real image from > > > >different angles, and compose them into a 3d wire frame. Then, I > > > >need to chop this 3d image in horizontal (or vertical) slices as > > > >a catscan does. As we have here in Piclist all sort of crazy > > > >persons, I believe someone should know something to help me. > > > >Tks. Wagner. > > > > Funny thing is I was just discussing this topic (3D from photos) > > with a friend last night. > > > > So anyone have some suggestions for inexpensive 3D milling machines > > or URLs to suitable software for DIY construction? _______________________________________________ ¯yvind Kaurstad, .....oyvindKILLspam.....safetel.no Safetel AS P.B. 405, N-4067 Stavanger, Norway Tel: +47 51 81 78 80 (Switchboard) +47 51 81 78 82 (Office) +47 51 81 78 93 (Fax)

That's the tricky part. It took me few hours to complete the Dremel, but it took almost 3 days in the respective Rhino forum discussion to figure out how to do it. The most common way is just use the native Rhino Text function, generate text in "surface" mode, then project the text image over the object, then use the projection to split the object surface, so deleting the curves (projection) you have access to the split letters at the object surface (as if you cut letters at the peel of an orange), then you can paint it... probably would take 4 hours to apply all that text...too much work, isn't it? Then somebody just whispered at my ear; "Why not just "bend" the original letters over the object?"... 2 minutes to apply it. Yes, it is unbelievable how fast can you produce with Rhino, unfortunately not from photographs... :( ¯yvind Kaurstad wrote: {Quote hidden}> > Hmm. > I'm impressed, Wagner. > > I've also tried Rhino and I find it to be a great package, but I > think I would have used much more time than just a few hours modeling > that Dremel. > > How did you get the text correct? Did you use any special fonts, or > did you draw the letters?