nisus Posted August 12, 2002 Share Posted August 12, 2002 Hi all, Does anyone knows a renderer who could make those lovely multiperspective panoramas, like used in many disney-films? I'd love to use this technique on composite-images... Here is an article on what I mean: check out the PDF --> http://grail.cs.washington.edu/projects/multirama/ rgds nisus Link to comment Share on other sites More sharing options...
STRAT Posted August 13, 2002 Share Posted August 13, 2002 i suppose you could get a similar result using cell shading with a fish-eye lense. Link to comment Share on other sites More sharing options...
nisus Posted August 15, 2002 Author Share Posted August 15, 2002 Hi strat, Maybe a fisheye could do the most basic images, but that is not just enough because it can be extended a lot. Pls read the article and you'll see that what interests me is that by applying this technique one is able to make large composite images with several views on a building, nicely fit together. Like matt pointed out, these kind of images are almost impossible to make, without the aid of a computer. Does anyone knows a program/plugin/script that could handle this? Rgds nisus ps: If someone is interested in writing something alike, it might be good to look at Renderworld by Francois Mourlevat, which is a 360degrees panorama-script for max. His techniques for splitting one image in several small images and compositing together again afterwards might be adopted. http://www.scriptspot.com/download.asp?ID=57&inf=1 Link to comment Share on other sites More sharing options...
nisus Posted September 7, 2002 Author Share Posted September 7, 2002 Hi all, For those interested, here is an article on how to make those *MPP-images: http://www.isy.liu.se/~turbell/documents/panorama.pdf rgds nisus *MPP=multi-perspective images Link to comment Share on other sites More sharing options...
nisus Posted September 7, 2002 Author Share Posted September 7, 2002 And here is a link to a similar theme: Multi-Center-Of-Projection Images: http://www.cs.unc.edu/~pxfl/papers/mcop98.pdf rgds nisus Link to comment Share on other sites More sharing options...
nisus Posted September 8, 2002 Author Share Posted September 8, 2002 and another one: http://www.jrpit.flinders.edu.au/confpapers/CRPITV11Vallance.pdf rgds nisus Link to comment Share on other sites More sharing options...
ZeBoxx Posted September 8, 2002 Share Posted September 8, 2002 Hi nisus, Short of writing a plugin to handle this (You'd really want to - all that image filtering math is evil beyond belief), You could have something like this... Create a NURBS surface. This NURBS surface has U,V coordinates. Match up U with X in an image. Match up V with Y in an image. Create the camera at coordinates U,V based on Your output resolution, and the pixel You want to render. Rotate the camera based on the NURBS surface's normal at U,V Set the camera to a smallish fov (You'll only want the center pixel - unless You want to do faux-filtering by rendering a larger angle and blending the pixels together). Then the next bit is to render each frame (1 frame for every pixel), and store the result of that render in Your bitmap. I believe this is entirely possible with 3ds max's internal tools in one way or another. Hope that all makes sense - can't say I'm too inclined to get right to doing something like that right at the moment... so maybe somebody else can pick up there Best regards, Richard Link to comment Share on other sites More sharing options...
nisus Posted September 9, 2002 Author Share Posted September 9, 2002 Hi ZeBoxx, To be honest I don't understand much of what you're trying to say. I recognise some things (small pixel lines, uv surfaces) but I really miss your point. As you're from the netherlands, maybe you can mail me in dutch on your suggestions. rgds nisus Link to comment Share on other sites More sharing options...
ZeBoxx Posted September 13, 2002 Share Posted September 13, 2002 Yip... let's see now.. where's that e-mail button.. Private Message ? hmm.. *tries it* Link to comment Share on other sites More sharing options...
nisus Posted January 18, 2003 Author Share Posted January 18, 2003 Hi all, Here are some of my tests on MPP, trying to get different views on space in one single image... * a close-up on furniture & view of the entire space * a bird's eyes view & a frog eyes view combined Don't mind the model... it's dated (1999) and was made on a PIII 166Mhz (yiha!) but a great space to try experiment What do you think? Feel free to take the images in photoshop and apply a horizontal offset on them rgds nisus Btw, does anyone knows a script to make stripcameras in max? and ow... *** No, I'm not drunk! U? *** Link to comment Share on other sites More sharing options...
kid Posted January 18, 2003 Share Posted January 18, 2003 Somehow I can only think of Alice in Wonderland when I look at those Link to comment Share on other sites More sharing options...
seismograph Posted January 19, 2003 Share Posted January 19, 2003 so, you found the panoshift funktions in hdrshop what's the deal about that technique? Link to comment Share on other sites More sharing options...
nisus Posted January 19, 2003 Author Share Posted January 19, 2003 seismograph, I only use max3.1, not hdrshop. Can you explain the latter pls? What is that function you describe? tnx nisus Link to comment Share on other sites More sharing options...
mzagorski Posted January 19, 2003 Share Posted January 19, 2003 Awesome.. glad u found out how to do it. Link to comment Share on other sites More sharing options...
seismograph Posted January 19, 2003 Share Posted January 19, 2003 hmm.. take a spherical panorama , load it to hdrshop. then go into Image->Panorama->Panoramic Transformations then change source and Destiantion to Latitude/Longitude and click on Arbitrary Rotation -> Setting and change the values (it rotate the image sphericaly) this looks similar to your images, just like rotating an fisheye: Link to comment Share on other sites More sharing options...
ingo Posted January 19, 2003 Share Posted January 19, 2003 Hmm, i can only see some panoramic images, no multipoint perspectives, although a panoramic image maybe a special case of a mpp. Anyway, you get some nice results when using rectangular->polarcoordinates in PS if you need psychedelic pictures. Link to comment Share on other sites More sharing options...
plastic Posted January 19, 2003 Share Posted January 19, 2003 hey nisus, looks great...how the heck did you do this with max?? Link to comment Share on other sites More sharing options...
Greg Downing Posted January 19, 2003 Share Posted January 19, 2003 Originally posted by nisus: Btw, does anyone knows a script to make stripcameras in max? [/QB]This is a pretty cool project. Is this a built in camera functionality in Max? You can get a spherical image out of any 3d package pretty simply by doing taking your camera and rotating it by 90 degrees six times for cube faces and render 90 FOV square images. If you want to convert this to any other panoramic format such as a spheric or equirectangualar (or any other)view you can do this easily with Flaming Pear's Flexify or Panorama Tools I have been trying to figure out an easy way to get a stripcamera out of Maya for a while. I want to do this so I can make stereo spherical images. Stereo sphericals require a scanning slit camera with the focal node moving around in a circle as the image is taken so the cube face technique won't work. The best I could come up with would be to create a camera that has a 180 degree vertical FOV and renders a horizontal view that is 1 pixel wide and then batch this renders into a single image. The problem is, this doesn't fit the "easy" criteria. Link to comment Share on other sites More sharing options...
nisus Posted January 20, 2003 Author Share Posted January 20, 2003 Hi all, Seismograph: interesting results, although to me it looks like you got an enormous amount of distortion almost everywhere in your image whereas I get a more 'normal sense of space/scale' - this all being very imho of course. Making a small rectangle move along the image almost looks like a normal rendering (without distortion) about everywhere around (all but my first) images. In your image, this is hardly the case, which could of course be due to the original fish-eye distortion, the original space or the technique used. I'm not sure which one it is... mike & ingo: I'm really not even close to what I try to accomplish. Like ingo mentioned, this is not even a full MPP yet... still searching a way to get that camera moved instead of rotated only. All automatically of course, since moving the camera slightly every frame and bringing every stripe together in photoshop is way to time-consuming. (hint: a stripcamera does this, but I can't find a script...) Marc: get the 3D Renderworld plugin at scriptspot.com and toy around in your favourite scene... Eventually the use of small stripes is the idea I'm after for now, but as I mentioned before: the camera should move along a path. Greg: Definately not easy! rgds nisus Link to comment Share on other sites More sharing options...
plastic Posted January 20, 2003 Share Posted January 20, 2003 you got me highly interested here! nisus, the pics you posted are cylindrical projection, right? no MPP, but rather single point perspective? i have some experience with scripting path constraints and bitmap composing, i don't see a problem with scripting it. don't have ANY time right now, but i'll look at it in a week or so. one thing i don't understand yet: with a single point projection there is a constant velocity between the stitched segments. if you move along a path the velocity changes depending on the radius of the segment, and if its convex or concave. how do you handle this? when the segmenting is fixed (simple for i=1 to x loop), simple interpolation/filtering should be enough to avoid artefacts, but will the projection look right then? when using variable segmenting, depending on the current path point and its relation to the previous and next point (radius), things certainly will stop being trivial. Link to comment Share on other sites More sharing options...
nisus Posted January 20, 2003 Author Share Posted January 20, 2003 Hi mark, Cylindrical projections idd, like I replied to ingo's question. I got another one where I stiched the images manually while the camera is travelling along a spline (normalised speed). I'll post this test somewhere tonight. For the question about the time segment, I suggest you read the articles in the beginning of this thread. One of them explains the process how to make it I'll have a closer look at them again myself rgds nisus Link to comment Share on other sites More sharing options...
Patten Posted February 17, 2003 Share Posted February 17, 2003 cgarchitect gallery cgarchitect gallery Links are about spherical panoramic 360 degree images I made while working in Oslo. From lightscape You can render out sherical panoramas with img asp 2:1, if you polarize them in photoshop on a canvas with img asp 1:1 you get this result. Of course you get heavy distortion on the edges(roof), but if you rotate the image 180 degrees before polarizing the coordinates you get the least dist where you had the most in the first example(floor). pretty neat. :angecool: The sperical panaramas you render to begin with are similar to the sphericals hdri + more images produced by Sachform Technologies, but does anyone know the practical approach to make your own 360 degree images with a camera or is it done with trixing in photoshop and hdrshop? :???: I´m not talking about photographing a reflecting sphere, because they don`t ever get perfect 360 even with trixing and mixing front and back sides of the sphere. their stuff look priceworthy and really good. :angerazz: sachform startpage Link to comment Share on other sites More sharing options...
seismograph Posted February 17, 2003 Share Posted February 17, 2003 Are you talking about spherical panoramas??? There are several ways to create such panoramas ...i prefer taking three images with a fisheye and stitch them together. ..that's pretty easy and fast (~20min.) quick tutorial about stiching three fisheyes together i also don't know why you don't like the mirrorball methode. ..it's the best way you can get a hdr without any special lens. btw, i think the sachform hdrs are pretty good... even if i don't understand why someone will spend money for a 300x1500px panorama. Just imagine you have them as BG... it's not enough for higher resolutions. Link to comment Share on other sites More sharing options...
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