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cdschroer

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cdschroer last won the day on October 16

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About cdschroer

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    http://culturalheritageimaging.org

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    San Francisco, CA
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    All aspects of computational photography. Adoption of new tools and technologies and training programs. Software development of tools for RTI, Algorithmic Rendering, and related technologies.

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  1. cdschroer

    Umlauts in folder names on Mac

    Thanks for reporting this! I wasn't aware of it, and don't think it has been reported before. We don't have any plans for updates to the viewer in the short term, but we will put this on the list for the next time we do updates. Carla
  2. cdschroer

    An alternative for controlling 3W leds

    I'm with leszekp on this. The software expects that nothing changes except the light positions. The images from the lower angles should be darker. Don't compensate with the lights, and don't exposure comp those images. You might want to read through the guide to highlight image capture on the CHI website - even though you are building a dome - because some core principles like this are described there. Carla
  3. cdschroer

    The size of dome

    Well, you can get decent visualizations if you violate this rule, but you won't have good normals, as you move farther away from the center of the subject. If you use normals visualization or specular enhancement with no color (both rely heavily on the normals data) you will see problems around the edges. So, it's all about "fit for purpose". If you want good normals for the whole subject, then you need the standoff. If you just want some relighting to get a decent screen shot, you might get away with less.
  4. cdschroer

    The size of dome

    Dear weiwei - do not worry. You set up a new topic, which was appropriate, and there is some information here that hopefully is useful. Also others should be able to find this, and I deleted the duplicate. Sometimes it is helpful for me to remind people, since this does happen from time to time. Welcome to the forums! Carla
  5. cdschroer

    The size of dome

    The recommended standoff of the lights for RTI is 2 -4 times the diagonal size of the subject. This is described in the Guide to Highlight Image Capture on page 23 (see below) If you use less than 2 times the size of the subject, you will not get accurate surface normals for the area outside the center of the subject that doesn't meet the light standoff requirement. I'm asking one of the computer graphics folks to reply as to the technical reasons for this. I know from experience and testing that this is true. Carla PS: I removed this identical question which you added to the end of another unrelated topic in the photogrammetry forum. This is appropriately a separate topic, and the discussion should take place here. As a reminder to folks - it is not helpful to post the same question in more than one place on the forums. Please find the most appropriate forum, and either add to an existing topic (if your question is part of that topic) or start a new topic. Thanks!
  6. cdschroer

    Error Dump

    Katie - It looks like you gave RTIBuilder the path to the ptmviewer instead of the ptmfitter. You need to change it to the ptmfitter - which you also download form HPLabs. It may have been in the same package you already downloaded. In that case, just open your existing RTIBuilder file for your project (instructions towards the end of the User Guide - for "open existing project) and when you get the final screen where you can "execute" building your RTI or PTM, change the path to the ptmfitter there.'' Carla
  7. cdschroer

    Masking trouble in Agisoft Photoscan

    Thanks Dave - yes - we try to keep to more general photogrammetry issues here in this space because Agisoft runs forums for PhotoScan. We are happy to entertain general questions about setup, good practice, equipment, photogrammetric approaches, etc. That said - there are some odd behaviors within photoscan related to masks whether you are doing an individual image, or a whole set. Crystal is correct that you need to select the folder containing the images, and the background image. If that folder is already selected then I usually select another folder, then the one I want to use before saying OK. Go to the Agisoft forums if you continue to have difficulties - and make sure you include what version of photoscan you are using, and what platform you are on (Mac, windows, linux - and OS level) Carla
  8. cdschroer

    Why my rti file is invaild and internal format unknown

    Hernandez - I'm not clear what problem you are having. First you need to have a .ptm or a .rti file. If instead you have a file of some other type (like Fmck showed) then this isn't a valid rti file. My guess is this is the result of something like the WedRTIViewer which does pre-processing on an rti or ptm file to set it up to work with a web based viewer. If that is the case - then the resulting folder has to be set up on a webserver with the appropraite HTML code to call it. This is described on the web page for the WebRTIViewer. I'm not an expert on that. If you want to use the regular RTiViewer - then you need an rti or ptm file. Carla
  9. cdschroer

    Missing file: PTMFitter.exe

    Loa - We wish we could include the PTMfitter software, but this license issue (from HP) prevents it. The easiest way to check for spaces in your pathname is to go to the "assembly-files" folder created by RTIBuilder and open one of the .lp files (it is just a text file - you can open it in any text editor) There you will see the full path to the image files. You will be able to see if you have any spaces. If you do - move the whole folder (with the .xml log file, and the jpeg-exports folder, etc) to a correct location - or rename the needed directories. Then you should be able to build an RTI from the existing project without having to detect the spheres and highlights again. How to do that is described towards the end of the user guide - and also elsewhere in the forums. If the filenames themselves have spaces, then you will have to start over after renaming them. Good luck!
  10. Khalid - I can get both files from these links. The RTI spec was uploaded to this forum - so you have to be logged in to the forum to get it. I should have specified that in my earlier post. What happens if you click on the link? (For me, it downloads the file to my downloads folder) Carla
  11. cdschroer

    Missing file: PTMFitter.exe

    Dear Loa - Sorry you have had such difficulty getting the software installed. It is very well documented in the User Guide that the PTMFitter is not included with the software and must be downloaded and installed from HP's website. This is because the RTIBuilder and HSHFitter software are both available under an open source license (GNU GPLv3) and the ptmfitter has a free for non-commerical use license with no source code. That license from HP does not allow us to bundle the software together, though it does allow you to download it for free and tell RTIBuilder where you installed it. You should be able to run the hshfitter without installing the ptmfitter. The "unknown error" message is likely not an installation problem. It is described in multiple places on these forums. The highest likelihood is that you have spaces somewhere in your image filenames and/or pathnames (i.e. the directories the files are stored in - all of them up to the root directory on whatever drive they are stored in) This is also a well documented issue in the user guide as well as the forums. The User guide should be where you turn to first to understand how to work with the software. It is free software and we have worked hard to provide good documentation, as well as these forums. The software is quite old at this point, and we would like to find funding to do an update. In the meantime - the software does work, albeit with a few quirks. Carla
  12. cdschroer

    Import to RTIbuiilder

    You need to give RTIBuilder the folder that contains the jpeg-exports folder - not the jpeg-exports folder itself. In other words, choose the folder one level up from the jpeg-exports folder. This is documented in the user guide, which can be found here: http://culturalheritageimaging.org/What_We_Offer/Downloads/Process/index.html Carla
  13. cdschroer

    Why my rti file is invaild and internal format unknown

    IT looks like only one of these is a ptm file - the first one. The other are all a different (.dat) format. The PTM file at 1KB is not a valid file. The file sizes would always be larger than that. I'm not sure how these were shared with you. Is it possible that these files are the result of some pre-processsing step for Web distribution? There are a couple of web viewers out there that require that you take a PTM or RTI file and run it through a program to prepare it for Web distribution. If that's the case, then you can only open the result with the web viewer, after the files are properly staged on a web server. What you want is just the regular full size RTI (or ptm) file. Carla
  14. Thanks for the additional details. I'll note that you can associate a photo with a group of RTI image sets - which doesn't totally get what you are asking for, but is simpler than associating with each image set. Also, the ability to "duplicate" image sets and/or groups of image sets will also automatically associate the photo. I agree that these ideas are "workarounds" for what you are asking for, but thought I would throw them out there in the hope that you might find the suggestions useful. Carla
  15. Hey guys! Thanks for figuring this out. I'm on the road doing training so just saw this. We definitely should make the default be to install the database. This probably needs its own topic where we can show the details and folks can find it easily. When I'm back on a computer (rather than my phone) I'll get that set up. Note that you may may need to start Postgres after rebooting your computer- or you will see the same message.
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