problem restitution of facades

hello,
I encounter a difficulty during the aerotriangulation stage on photos of facades. My competitor on PHOTOSCAN with the same photos manages to have a successful calculation and a coherent global rendering. Here is the link to report the result which remains a failure with CCMaster :https://sketchfab.com/3d-models/golf-4fb6c43e0099476583a7be7f625db92d
I would like to know how to set up the tool so that the process is completed correctly.
Thank you very much,
Dam (.fr)


Parents
  • Hello Damien,

    What kind of issues are you facing? Is the AT failing, or is the result of the AT not correct? Can you provide a screen capture highlighting the issue? Looking at your sketchfab model, I'm not sure I understand where the issue is.

    - Cyril

  • Hello Cyril,

    if it's OK you can write in French, otherwise it's not OK.

    Concretely I use 2 groups of photos: aerial photos and photos of facades.

    At this stage I simply use the metadata of the photos and the automatic recognition of Tie Points.

    The TA goes to the end of its process, but it discredits me either the aerial images (orange dots on the 3D rendering) or the images taken on facades.

    Moreover, when only the images of the facades are taken into account, in the 3D visualization of the TA, we see the south facade disproportionate compared to the north facade.

    These same shots were used by a competitor with a rendering computed by PHOTOSCAN, and everything seems to work well.

    Unfortunately, I erased the improper files, I will restart an AT and send you a screenshot.

    If you have an idea about the cause of this result, I would be delighted!!

    Thanks

Reply
  • Hello Cyril,

    if it's OK you can write in French, otherwise it's not OK.

    Concretely I use 2 groups of photos: aerial photos and photos of facades.

    At this stage I simply use the metadata of the photos and the automatic recognition of Tie Points.

    The TA goes to the end of its process, but it discredits me either the aerial images (orange dots on the 3D rendering) or the images taken on facades.

    Moreover, when only the images of the facades are taken into account, in the 3D visualization of the TA, we see the south facade disproportionate compared to the north facade.

    These same shots were used by a competitor with a rendering computed by PHOTOSCAN, and everything seems to work well.

    Unfortunately, I erased the improper files, I will restart an AT and send you a screenshot.

    If you have an idea about the cause of this result, I would be delighted!!

    Thanks

Children
  • Hello Damien,

    I could speak French, but in the interest of future visites by english speaking users, I'll stick to english Slight smile

    We have two possible solutions:

    1. Use the Alternate Engine preset (in the AT settings:  ). Try this one first. AT will be slower but the result may be better.
    2. Enter Manual User Tie Points. This is a slow manual process. Go to the Surveys tab of your block, and create multiple User Tie Points linking ground imagery and drone imagery. I recommend at least 3 ground images and 3 drone images per tie points for this to work well.

    I understand the second solution is not a perfect one, but should be a workaround. I'll ask the dev team if they have other ideas.

    - Cyril