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Showing content with the highest reputation since 07/08/2019 in Posts

  1. 1 point
    and thanks for the mention Dave - I didn't see it until today sorry!
  2. 1 point
    Greetings! Our article "Two new ways of documenting miniature incisions using a combination of Image-Based Modelling and Reflectance Transformation Imaging" is available in Open Access at https://www.mdpi.com/720360. Best regards, Dag-Øyvind Solem and Erich Nau, Norwegian Institute of Cultural Heritage Research Abstract: Digital 3D documentation methods such as Image-Based Modelling (IBM) and laser scanning have become increasingly popular for the recording of entire archaeological sites and landscapes, excavations and single finds during the last decade. However, they have not been applied in any significant degree to miniature incisions such as graffiti. In the same period, Reflectance Transformation Imaging (RTI) has become one of the most popular methods used to record and visualize this kind of heritage, though it lacks the benefits of 3D documentation. The aim of this paper is to introduce two new ways of combining IBM and RTI, and to assess these different techniques in relation to factors such as usability, time-efficiency, cost-efficiency and accuracy. A secondary aim is to examine the influence of two different 3D processing software packages on these factors: the widely used MetaShape (MS) and a more expensive option, RealityCapture (RC). The article shows that there is currently no recording technique that is optimal regarding all four aforementioned factors, and the way to record and produce results must be chosen based on a prioritization of these. However, we argue that the techniques combining RTI and IBM might be the overall best ways to record miniature incisions. One of these combinations is time-efficient and relatively cost-efficient, and the results have high usability even though the 3D models generated have low accuracy. The other combination has low time- and cost-efficiency but generates the most detailed 3D models of the techniques tested. In addition to cost-efficiency, the main difference between the 3D software packages tested is that RC is much faster than MS. The accuracy assessment remains inconclusive; while RC generally produces more detailed 3D models than MS, there are also areas of these models where RC creates more noise than MS.
  3. 1 point
    Two common options include: Texture laser model inside photogrammetry software Export the photogrammetry model Align the laser model to the photogrammetry model Import the aligned laser model into the photogrammetry software and generate the texture. Texture baking Export the textured photogrammetry model Align the laser model Bake the texture from photogrammetry to laser model The photogrammetry mesh needs to be accurate enough for alignment with the laser model. As long as the camera alignment is good the texture map should be good as well even if the photogrammetry mesh has some defects from shiny/featureless surfaces.
  4. 1 point
    I ran into the same problem as Alessandro. HSH...no problem. PTM gave me an error at the final processing stage. Images were taken with a Nikon D800 at 7360 X 4912 pixels (36mp).Processing was done under Windows 10 with 64gb of memory. Per Dave’s recommended procedure above, I set up a fresh download of builder and the fitter on the C Drive. Pulled in the fish fossil sample set...that processed no problem. I then took my file set reduced the image size to match the fish fossil test set (2000 pixels on the long edge). Worked fine. So I started increasing the file size. To make a long story short, I ended up, removing the metadata, processing the full file size image, and then cropping the image at the end. I was able to successfully perform a PTM run with an image file cropped up to 29.19 megapixels. If I cropped to 29.21 megapixels or more it would fail, so it appears that there is a size limit on the PTM processor. Alessandro is working with a much smaller image size but only 8gb of memory , but I would think that that should be enough. I would recommend removing the metadata from the files, and then testing. Not sure what effect that will have but it seemed to make my files process more smoothly. Try different cropped sizes and see how far you can go before it fails. You can then size your images accordingly. I read a comment by Carla in another post that indicated that apple computers don't seem to have a problem. An associate of mine is going to try and see what happens. Hope this helps
  5. 1 point
    Windows Defender is the standard anti-virus program that comes with Windows 10. It will show up as a shield icon in the trayicon area. Double-click on it, select "Virus & threat protection => Virus & threat protection settings => Manage settings => Exclusions => Manage exclusions". Add the RTI_Builder folder (usually in the root directory on the C- drive). This should fix the problems. You may need to reinstall RTIBuilder.
  6. 1 point
    There are a lot of 32bit apps stil in use out there. Here's a quote from an article in Time magazine this week about how to check to see what 32bit apps you have on your system: "... if you’re dependent on a particular 32-bit app, it won’t work in macOS Catalina, as many Twitter users discovered after upgrading. Meanwhile, some popular apps, like Adobe Photoshop, appear to be suffering from temporary compatibility issues with Catalina, so it’s best to hold off on upgrading until a software patch resolves those problems. Want to see which of your apps are still 32-bit? On your Mac, hit the Apple menu, select About This Mac, and click System Report. In System Report, scroll down to Legacy Software, and take a look at all your 32-bit apps." Here's the full article: https://time.com/5696302/macos-catalina-upgrade/ I know this doesn't resolve the problem if RTI software no longer running - but I did want to point out that folks might want to be cautious about upgrading until they see the full impact - not just RTI software. Carla
  7. 1 point
    Thank you for letting us know about this. We can contact various folks to see what the simplest fix is for this issue. For the PTMFitter - that is HP software, and not open source. We do not have the source code for it - but I know some researchers who have it. Carla
  8. 1 point
    We run RTIBuilder successfully on a Windows 10 machine. We are mostly a Mac shop, so I'm not super familiar with the Windows environment, but I wanted to note that Windows 10 can successfully run RTIBuilder. The software is old, and we'd love to update it. We are a small independent nonprofit, and the initial work was paid for by a grant and some volunteer efforts. We'd love to get funding to update it, but selling individual copies isn't a way to get that done (especially since it is open source software, per the agreements of the funder and all parties involved in it's development). We still use RTI frequently, and think it is a very useful technique. It will take a new grant to create an updated version. Thanks to Dave for jumping in and asking for the details. Much appreciated! Carla
  9. 1 point
    Christine, Can you post a screenshot of the error message please? (if there are multiple error messages, a screen shot of each message please). Also, can you look at the Windows event logs and post any messages there that relate to when you try to start RTI builder please. Dave
  10. 1 point
    Never could get the dropbox download to work but there is an upload that worked for me here! At the end of the thread
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