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Found 14 results

  1. We recently discovered that the PTM software is no longer available from the HPLabs website. We have placed both the Mac and Windows versions of the PTMFitter in a dropbox along with the license file from HP. You can get the software from here: https://www.dropbox.com/sh/jfsy0lhxu6zv4i4/AADJpq6E_GJmNw_s5C8r94CVa?dl=0 Also - many papers on PTM and RTI are by Tom Malzbender - and you can find them on his personal website: https://sites.google.com/site/tommalzbender/
  2. Hello, I am new here. When I use RTIBuilder and put the images, then i get ''Highlight Denitions Not detected'', when I pass the last phase I have this error ''Improper call to JPEG library in state 200''. I have all my photos in JPG and i can't get the model to put this in RTIViewer. I checked all my photos and there are not have spaces in the names or folder. Is so important this job for my thesis. Sorry for my english, I speak spanish Thank you so much!
  3. Hi there, I'm starting an imaging program at a maritime museum. I know from speaking to colleagues that many maritime collections are not well recorded. I'm hoping to use an RTI/Photogrammetry method to record these works, and create 3D models of them for study. Because time is a major factor, I hope to optimize my image capture through automation. I will have a smallish studio, a 50mp Canon 5DS, and an excellent computer (which I'm building, optimized for photogrammetry which should support RTI). Jorge Cano at the Factum Foundation has proposed a method using just four lights (15 degrees at NSEW) to capture up to 50nm resolution. The four images are put into Adobe Substance Maker to obtain a heightmap and that is brought into GIS software for stitching and precise height/normal mapping. Whether I use Cano's method or RTI, I would like to build a folding dome capable of imaging at least an 8in x 8in section of each artwork. (I will be visiting multiple museums, so portability is important.) I will probably build my own dome, to which I will attach lights, and which will allow me to mount my camera at the center. I need guidance on what lights to use (strobe, flash, LED, etc.) and how to trigger the lights sequentially in sync with the camera's shutter. There are a lot of references to Arduino boards, custom PCBs, etc. A company called RTI-Dome in France has a fully automated system for image capture and filing. Custom Imaging also has an automated system. I don't know whether either of these can fire LEDs strong enough for larger scale objects. Any help/direction would be much appreciated. Nick Raposo americanmarineart.com
  4. As an RTI newbie, I hope I am not violating any forum customs. Please feel free to move this question to a more appropriate location if needed! I have persuaded the Israel Antiquities Authority to produce three RTI images of an ancient artifact that I think has been neglected by scholars. Now that I have the RTI images in hand, I would like to post them on the web in such a way that anyone with a modern browser can view them, but not be able to download the actual RTI files themselves — at least for the time being. In reviewing the existing forum topics, I found the RTI AHRC Project (UK) topic to be promising, but the emphasis there seems to be on expanding analytical features of the viewer being developed, and the topic has been quiescent for over two years. I just noticed a link to CHER-Ob, but haven't determined its relevance yet… Is there a basic web viewer available, or is there another approach I could be taking? R. Peter DeLong independent researcher
  5. Hello, I am interested in RTI and I have started to use the method involving 2 spheres. However in some case, there are physical difficulties for taking photos. I would like to know if I create a 3D model (with an Artec Scanner by example), is there any applications to convert 3D model to RTI ? My 3D model is of course of a surface. Regards Bremard Nicolas
  6. Hi all, Recently we have released to the public our Photogrammetry&RTI project that we have been working for over 2 years. We were inspired by some of your posts here with the dome approach and we decided that we should share with you our results. Our aim was to create a cheap, affordable photogrammetric modeling as well as RTI imaging device, that anyone can create and does not cost thousands of euros. Because of that, we needed multiple cameras, led lights and a step motor, which allowed us to rotate an object placed on the rotating table and take photos around it. As our device heart we used RaspberryPi 4 and 4 ArduCAM cameras. We were aiming at small objects, artifacts which are not bigger than 100-120mm. In the first iteration of our device we have used a small (32cm in diameter) dome (an aluminum bowl from IKEA….) with 40 led lights and 4 cameras. This version was successfully tested on Cyprus about 2 years ago where we gathered extremely valuable experience. In the second iteration we decided to leave the bowl approach and create a spider-like shape, with 10 arms for the led strips (12 leds on each) and 1 seperate arm for the cameras. It is much more mobile than the previous version as we can disassemble it and because of that it is easier to work with. Because in the first iteration we noticed that depth field was an issue, we decided to go with higher resolution cameras that have motorized focus, so we can use focus stacking method to increase our depth field. For the led strips we used flexible pcb which we connected together with FPC cables. We are controlling them through our shield that goes on the top of the raspberry pi 4. Below I am sending 2 links to my LinkedIn posts as I can not upload images here. https://www.linkedin.com/posts/marcin-k%C5%82%C4%99bowski-458bb5146_photogrammetry-rti-textured-activity-6766022368184860672-n2MF https://www.linkedin.com/posts/marcin-k%C5%82%C4%99bowski-458bb5146_photogrammetry-rti-ptm-activity-6766744323838013440-z9yn Thanks for inspiration guys and let us know what you think about our device. I am sure we will share some results as we will start testing and creating more RTI images for the objects. Marcin
  7. Hello, I would like to integrate the rtibuild in a script. Is it possible to call rtibuilder from command line and passing image folder and lp file as arguments ? Thank you Nicolas
  8. Hi! I am working with a student who has downloaded RTI builder on her computer and continues to get an error message: "To open "RTibuilder-v2.0.2" you need to install the legacy Java SE 6 runtime." She can click 'ok' or 'more info.' Clicking 'more info' leads us to the Java website but when she tries to download the selected Java she can't install as it says "Java for macOS 2017-001 can't be installed on this disk because a newer version of this package is already installed." We tried completely uninstalling and reinstalling the newest version of Java and completely uninstalling and reinstalling RTI builder. We got the same errors. RTI viewer downloads and runs fine. She has an early 2015 macbook running OS 10.15.17. Any help greatly appreciated! Thank you! Jackie
  9. I was wondering if anyone here had any experience with how to use RTI's to make a to scale drawing of an object, particular drawings of artifacts that can be used in publications. Any advice or tips would be greatly appreciated!
  10. We get asked this question a lot, so I thought I'd post it here in the FAQ! The file format specification for PTM is available from the HP website here: http://www.hpl.hp.com/research/ptm/downloads/PtmFormat12.pdf The file Format Specification for the RTI file format was previously posted here in the forums, and I am attaching it here as well. Note that it is marked "draft" because it contemplates a .xmp structure embedded in the file structure, and that part was still under discussion when this document was created. The format for the RTI data is final, and this is what is used by the RTIViewer and other viewers that support this format. Carla rti_format_final-draft.pdf
  11. On Windows 10 pro computer with 16 gig ram, Intel CPU i7 processor, .rti files made with RTI Builder do not open in RTI Viewer. The files begin to open, but when the progress bar is about 20% finished, RTI Viewer returns an error "[filepath] is invalid Internal format unknown" Created .RTI files are not tiny, between 50 and 100 mbytes in size. RTI File is created without indication of error. Same problem on 2 different computers. Running as admin and running in Win7 compatibility mode does not help.
  12. Searching the forums all of the options for viewing rti format images from within WordPress seems to have stalled years ago. I've just got the WebRtiviewer installed on my server and it works well on a static html page. Looking at the source code of the static page there are a number of links to things like spiderGL directories etc and then a simple container script to launch the rti file into the viewer. Has anyone had success porting this html code into a WordPress page? It doesn't look too difficult but I'm failing at the moment lol Regards Kev
  13. CHI is delighted to announce that all the recorded talks from our NEH-sponsored symposium at The Met last March -- "Illumination of Material Culture: A Symposium on Computational Photography and Reflectance Transformation Imaging (RTI)" -- are available now from the museum website: https://www.metmuseum.org/about-the-met/conservation-and-scientific-research/projects/rti-symposium/ These talks by worldwide experts share the latest research and use cases in the application of Reflectance Transformation Imaging (RTI) and related topics in computational photography. Enjoy!
  14. We are thrilled to announce the release of RTIViewer 1.1. The new features in this release are the ones most requested by our users. You can read about the new features and download the release (windows and mac versions), user guide and examples on the RTIViewer page. This software is available as free open source software. Cultural Heritage Imaging is a small independent nonprofit organization and we need donations from people like you who use and value these tools in order to keep doing the releases. Please help us by making a donation to support this work. We want to gratefilly acknowledge the efforts of Ron Bourret, Gianpaolo Palma, and Leif Isaksen for the development work that went into this release. Much of the work was performaed as volunteers. We also want to thank Judy Bogart for doing the User Guide updates and descriptions for the new features. We had some beta testers for the release, and we thank them for their time and effort to try things out and report issues. And finally, we thank all the members of the CHI team for the work tooversee the release including setting the requirements for the release, testing it and providing feedback in every phase of development, running the beta testing program, identifying and reviewing the user guide updates, and all the other tasks that go with getting something like this done and out. Enjoy! Carla
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