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  1. Last week
  2. cdschroer

    CHI's Resources for Photogrammetry Users

    We are focusing on good practice for collecting image sets for photogrammetry - which is independent of the software used. We feel that if people collect good image sets that follow the rules (as described in our videos) then they have useful information for now and the future contained in those image sets. Especially if they collect some metadata about what they are doing, their methodology, who was involved, the subjects and locations, etc. We are developing tools for that called the Digital Lab Notebook. While we do use Metashape (aka Photoscan) at this time, the methodology is not dependent on the software. So our freely available public information is not about Metashape. We agree that the Metashape community forums are a great place to go for information about working with that software. We do use an error reduction workflow in Metashape that is a bit different than the process most folks follow. We teach that in our training classes. We spend time looking at metrics and what they mean, and also trying to impart an understanding of the sfm photogrammetry approach, and how that informs the guidance we give on collecting image sets. Our goal is to impart knowledge rather than give a "cookbook" approach, so folks can deal with a variety of situations in their own work, and make the appropriate trade-offs to meet their needs. This kind of material doesn't fit into a forum post. Carla
  3. shahin_2036

    CHI's Resources for Photogrammetry Users

    tnx, dave, I would like to know what setting is used for CHI project in PhotoScan... and how much times is spent to finish it?
  4. Earlier
  5. Jack Hubler-Dayton

    3D File Formats to Archive and Display

    Great information, thank you for your responses Dave and Carla! I would absolutely like to avoid any potential issues with proprietary formats so it looks like I will continue using DNG and OBJ for archival purposes. Incorporating the Lab Notebook into my capture workflow during my next photogrammetry project is definitely on my list. I'm restoring a historic homestead fieldstone fence in Kansas right now and making a model of before and after should provide a good chance to gain a little familiarity with the Lab Notebook.
  6. Janis Pipars

    RTI Viewer foriPad ?

    Thank you so much, Tessa!
  7. Dave Martin

    CHI's Resources for Photogrammetry Users

    Shahin, I think the answer is "it depends"! - it depends on what you're trying to image - a small artefact or a building; it depends on what version of PhotoScan you're using (and just to confuse things, they have renamed it from PhotoScan to Metashape with the release of version 1.5); it depends on the sensor used; etc. Far and away the best place to search for help on PhotoScan is on the dedicated Agisoft forum - just search for "workflow" (almost 80 hits). One thread to which I would particularly refer you to is https://www.agisoft.com/forum/index.php?topic=9485.msg43931#msg43931 which discusses the workflow developed by Tom Noble et al of the USGS, and that of Bob Meij. (would also suggest this might be better in a thread of its own ....) Dave
  8. shahin_2036

    CHI's Resources for Photogrammetry Users

    thank you for the resources! It's great...but it not will show any suggest workflow in agisoft... Can you explain that step? for example, the best key point and tie point in align photos... thank you
  9. leszekp

    RTI Viewer foriPad ?

    Used to be - unable to find any reference to it on the iTunes store.
  10. Janis Pipars

    RTI Viewer foriPad ?

    Hello! I am wondering are there RTI Viewer app for iPad or other alternatives? Thank you so much! Janis Pipars
  11. Janis Pipars

    jpeg-exports locaton on Mac 10.14

    It works, Carla! Thank you so much! Janis Pipars
  12. cdschroer

    Scaling fix for RTIViewer on high DPI displays (Windows 10)

    Thanks for posting this! We recently got a 4K monitor we are using in a Windows environment, and ran into this issue (we are mostly a mac shop). We hadn't tracked down the best way to deal with it yet - and this is very helpful. Note that RTIBuilder (and some of our other tools like inspector and DLN: Capture Context) are written in C++ using the qt libraries for the UI. I'm guessing this is an issue with the qt libraries not handling scaling for hi-res monitors. We are seeing this problem with all of our tools. If you want to check out the Digital Lab Notebook (DLN) tools go here: http://culturalheritageimaging.org/What_We_Offer/Downloads/DLN/index.html Carla
  13. cdschroer

    Import Images problem

    Hmm - I have seen this before - but nothing else is coming to mind at the moment. Is RTIBuilder producing an xml log file? It should be in the ProjectFolder in your example. It should have the name that you gave the project when you started the project. Sometimes there are useful hints in that file. Can you take a look and/or post it here? Carls
  14. cdschroer

    jpeg-exports locaton on Mac 10.14

    Janis - You have to organize your images into a folder called jpeg-exports. The folder should be under a folder for your RTI project. For example a folder called "painting1" with a folder called "jpeg-exports" inside that. When you use RTIBuilder - you tell it to load images from "painting1" (Us the bowser tool to find that folder) Then it will look for a "jpeg-exports" folder within that folder. If you do not have a folder with that name, it will not find any images. This is documented in the RTI Guide to Highlight image processing: http://culturalheritageimaging.org/What_We_Offer/Downloads/Process/index.html I hope this helps. Carla
  15. Janis Pipars

    jpeg-exports locaton on Mac 10.14

    Hello! I am new to Reflectance Transformation Imaging and I have an issue. The RTIbuilder-v2.0.2 doesn't allow me to import the file sequence. It is telling me that jpeg-exports folder is missing in my project folder. The application doesn't allow me to create a projcet file or folder at first hand. No spacing in my file path. What do I do wrong? Any suggestions? Thank you so much! Janis Pipars
  16. JoshE17

    Import Images problem

    Dear Carla, Thanks very much for your quick response. I've just double checked the .jpg extension, as suggested, and it is indeed lower case. Following this, I double checked and then changed the permissions to make sure that basically anyone logged onto this laptop, a personal device anyway, could access all the folders and unfortunately I still have the same problem. A friend wondered if it might be a problem with the fossil fish files given for the example, but unfortunately after trying with another set of files, albeit ones completely unsuited to really work on, but nevertheless in the correct file format for the software, they still didn't import. In a way I'm glad to hear I'm not the only one a little stumped! All the best, Josh
  17. cdschroer

    Import Images problem

    Hi Josh - I have a couple of ideas. First are you using uppercase JPG for your filenames? There is a bug in the ptmfitter that will not accept files named myimage.JPG but will accept myimage.jpg. Otherwise I wonder if you have some kind of permissions issue. Are you sure that you have full permissions on the full path to where the images are located? I don't have a lot of other ideas off the top of my head, but those two jump to mind. Thank you for providing very detailed information about what you did and what happened. That is very much appreciated. Carla
  18. Dear Ari, Thanks very much for posting this. Can I just check that GitHub is still hosting the .manifest file? When I clicked your link I got the code, but not an actual .exe to run, forgive me for asking I'm not the most tech savvy of people, but I feel I may be missing something. Thanks again. Best regards, J
  19. JoshE17

    Import Images problem

    To whom it may concern, I'm trying to import the jpg files given on the CHI website into the RTI builder. I've followed the guide and have created the following folders with the images fossil fish images contained in the jpeg-exports folder: rti_projects projectFolder jpeg-exports So the fossil fish images are in the following full file locations: C:\rti_projects\projectFolder\jpeg-exports With the first image being: C:\rti_projects\projectFolder\jpeg-exports\fish_fossil_01.jpg I have then tried to open the folder as instructed in the guide, therefore I have navigated to the projectFolder as the parent directory for the jpeg-exports. Unfortunately all that appears to happen upon doing this is the following screen: With the cursor of the mouse changed to a blue loading wheel. I have left the programme running overnight, wondering if my computer, windows 10, intel core i7, is not powerful enough to import the images, but given that this laptop is relatively new (1 year old) and optimised for video editing I can't imagine that would be the problem. I'm probably missing something very obvious, but I've tried going through the guides and I can't see quite what it is. Is anyone able to provide some advice? All the best, Josh
  20. leszekp

    RTI Builder Unknown error

    The old ptmfitter had an effective image size limit of 24 megapixels on Windows, even on systems with lots of RAM. The new ptmfitter from Kirk Martinez' group has no problems handling images up to 100 megapixels in size; I don't go any higher because the RTIViewer software has problems above 100 megapixels. https://custom-imaging.co.uk/software/
  21. cdschroer

    Why my rti file is invaild and internal format unknown

    Alisali - I really don't understand what issue you are having. You are getting an invalid file error - but I don't understand the circumstances of whether it's on a Mac or PC. If this is still an issue - then please provide more details about exactly what you are doing, whether the file is a reasonable size, (i.e. should be MB not K) and whether the files worked in one environment and failed in another. Sorry for my delayed response. I'm not getting notifications like I used to, and just found this. Carla
  22. cdschroer

    3D File Formats to Archive and Display

    Great question Jack! First, we think collecting high quality image sets with proper overlap and good geometry is the most critical thing. If you have that and you archive the images (preferably DNGs but could be TIFFs) along with good metadata about your project, you have something really useful for the future. If you want to include models, we would recommend the OBJ or PLY formats. We also recommend exporting masks and camera calibration data if possible. These could be useful in better understanding your outputs. Masks especially can take a lot of work and you don't want to lose that. Software like Metashape (AKA PhotoScan) can easily export these things. Other software may or may not be able to do this. As part of our Digital Lab Notebook tools we have been working on some recommendations for archiving. This is still an early draft and we are getting some feedback from some advisors - so stay tuned. Carla
  23. cdschroer

    RTI Builder Unknown error

    Somehow I didn't get notified of this whole thread. So sorry that I missed it until now. When we updated the forum software it changed the notification mechanisms. Anyway here are a few thoughts. There are not hard limits for processing RTIs - though it will depend on how beefy your machine is. We use a Canon 5DSR and can process the data with no problems on Mac laptops with 16GB RAM. I seem to recall that there were some issues with the old ptmfitter with large images on Windows, but that shouldn't affect the HSHFitter. AS for the image shown here - it's a bit hard to tell from a single image but I have 2 guesses: 1. Using a zoom lens the lens can slip when pointed down. Normally you would see images go out of focus when this happens. You can use tools like Lens Band to stop this kind of creeping, or ideally, use a fixed focal length lens. 2. If the individual images look sharp, and the RTI is sharp in some light directions, and goes out of focus in other light directions something likely moved in your setup. It could be the camera, or it could be the subject. With a 50MP camera very small movements can move several pixels creating this kind of effect. One way to look for this is inside RTiBuilder after the spheres are detected - try choosing the first image in the image set, and then the last image. You can see if the sphere moved because the red ring showing the sphere detection will be in a different place on the sphere. You can frequently go through the images and find the image where things shifted. Then you could process just the images before or after the move (whichever is a bigger set). We refer to this kind of RTI as containing "a mover". Carla
  24. cdschroer

    The Format of imported images

    The format specifications for both RTI and PTM are available - and there is an item in the FAQ with a link for PTM and the file for RTI.
  25. leszekp

    The Format of imported images

    Somewhere online there used to be a description of the ptm format, but that appears to have disappeared. It should be described in the original Malzbender paper about PTM. Don't know if I've ever seen anything comparable for the rti format, but the original paper about HSH fitting should give you some information. You might contact CHI directly for the source code for the hsh fitter, and that should give you information about the storage format for the rti files. Not sure exactly what kind of useful information you expect to get from the files. They just store the fitting coefficients for every pixel (along with the RGB date) that's used to calculate normals, both of which are used by the viewer to display the image and the effects of changing the lighting angle.
  26. weiwei

    The Format of imported images

    Thank you for your answer. Because I want to study the files of .ptm or .rti , I hope get the uncompressed file of .ptm or .rti that I could study. Now I get compressed file of .ptm or .rti, I can not find the way to understand well the file.So I want to get the uncompressed file. Would you know the way to get the uncompressed file or the way to study the compressed file of .rti or .ptm? Thank you very much!
  27. leszekp

    The Format of imported images

    Both fitters (PTM and HSH) only take jpg files. If you have uncompressed images, you will have to convert them to jpg format. Just select the highest quality jpg setting for the best results. I convert RAW files to JPG format all the time, and they work fine.
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