co-ordinate system setup

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    Wishgranter
    Hi Chris

    for the coordinate system:

    you can set it per GCP and can set export coordinate system
    Go to WORKFLOW ribbon/SETTINGS/COORDINATE SYSTEMs settings

    but try first if the exported coordinates are not too BIG for the externall aplication, as thsi is very common issue why the coordinate systems are not used outside CAD sw solutions
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    chris
    I haven't set up with ground control points yet. so think that's probably the issue. though I'm a bit confused since it looks correct in the viewport but wrong rotation on export.
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    chris
    I've just tested a small reconstruction of a wax model. (shot outside with gps)

    I though i'd use the define ground plan to level it out. I got it to where i was happy with it. exported it, and it came in a complete different rotation from the rc viewport.

    I had it set to Project: wgs84 Output: local

    may main issue is that i'm getting a different result on the export as i see on screen.
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    chris
    I seem to have this working better now.

    setting project to gda94 - zone 55. output to local.

    I'm now getting better results (along with flip xy on import to 3dsmax).

    also do you need to update / align images for this to update?
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    Wishgranter
    Hi Chris

    I seem to have this working better now.

    setting project to gda94 - zone 55. output to local.
    = OK

    I'm now getting better results (along with flip xy on import to 3dsmax).
    = OK, what can understand with better results ? :D

    also do you need to update / align images for this to update?
    if change just output system then not need to do anything
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    chris
    ok back to being confused again :)

    I'm just working on a number of different things, all working a little different.

    so the model that i had working (while flipping it on import). was from a heli run that didn't have any gps points on it.

    all the ones i have with gps, I'm getting a model with a different rotation than what i see in rc.

    I think some how its just using the wgs-84 world co-ordinates rotation. (still moved to 0,0,0). and since i'm in australia, i'm getting an upside down model.
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    Wishgranter
    Hi Chris

    so the model that i had working (while flipping it on import). was from a heli run that didn't have any gps points on it.
    = so its orientation was OK or not ? :D

    all the ones i have with gps, I'm getting a model with a different rotation than what i see in rc.
    = so when have GPS info the exported orientation is not right ?
    = try on export set PRESERVE COORDINATES to FALSE
    = in end effect the exported rotation is OK or not ?


    I think some how its just using the wgs-84 world co-ordinates rotation. (still moved to 0,0,0). and since i'm in australia, i'm getting an upside down model.
    can send ONE dataset, not big say 50-100 imgs to milos.lukac@capturingreality.com so can take a look on the issues ?
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    chris
    the one without gps worked fine.

    I have been setting perserve coordinates to false (at least on last few exports)

    this isn't a huge problem while i'm working on smaller models, and its not to bad to rotate in max.

    but when i start outputting higher quality models and saving in parts. its going to make it much harder. also when i was to remodel things in max and be sending things back and forth it will be a problem.

    once i sort this out, along with figuring out how to avoid having my model enclosed (i've been a bit lazy with reconstruction area though doing more with that now). I'll be able to get the vrmesh workflow going a lot better.

    I'll see how i can go about sending a set, my current smallest one is about 800 photos, so i'll need to grab a smaller area.
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    chris
    ok so i've been looking at this more.

    project: mga gda94 zone 55
    output: local

    PRESERVE COORDINATES to FALSE = moves model to 0,0,0
    PRESERVE COORDINATES to True = looks like keeps position at mga gda96 zone 55 co-ordinates

    still my rotation is wrong, but i'm starting to understand a bit more about the options mean.

    so i want it set to false.

    I'll see if i can work out and area that i can send. i just did a small area, but it still wanted to select 680 cameras so i'll need to find a different spot.
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    Wishgranter
    Hi Chris

    In short about you workflow:

    you create geo referenced model
    export for editing in external app
    load back cleaned processed model
    create texture
    export
    use in GIS aplication for generating orthos ??
    or use in CAD sw to create plans ?

    asking as want get your workflow and see what can be improved for easier work...
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    chris
    basically that's it.

    though my main output is going into 3dsmax for visualizations and animations (so that needs to be near 0,0,0). but i would also like to create geo-referenced ortho maps that can go into civil3d or global mapper.

    there may be a point too that i want geo-referenced models, though that would have to be still at near 0,0,0 and have a csv file that places each part at its geo-referenced point. but I'm not really interested in doing that now.

    in the past i've worked with global mapper to prepare gis info for 3dsmax, by saving out projection file for mga gda94 zone 55, and then editing that in a text editor to adjust the false northing and false easting to offset that back to the center point at 0,0,0.

    Ideally i'd like rc, 3dsmax, global mapper all in the same local space. because I'd also like to bring in tree data sets have so i can replace trees done in rc with high res 3d models. as well as any other cad information

    though I think rc project and output co-ordinates really should cover that pretty well. its really just controlling its rotation, and having them different between viewport and saved obj that i'm having issues with.

    maybe I'm just having these issues because i haven't added any ground control points.
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    chris
    I've found the info panel.

    I've attached a screen shot. under rotation i think its start to make a bit more sense.

    its looks like rc is adjust the model/viewport so it looks correct by adjusting the yaw/pitch/roll.

    but i think whats happening is when it gets exported to an obj files those arn't baked in.

    dose this sound correct?
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    Wishgranter
    Hi


    though my main output is going into 3dsmax for visualizations and animations (so that needs to be near 0,0,0). but i would also like to create geo-referenced ortho maps that can go into civil3d or global mapper.
    = OK
    look on the ORTHO tools the BBox set "projection" so can make very easy way orthos even from inside of buildings and etc
    try it out and save time to play with it in 3ds max..



    there may be a point too that i want geo-referenced models, though that would have to be still at near 0,0,0 and have a csv file that places each part at its geo-referenced point. but I'm not really interested in doing that now.
    = OK

    in the past i've worked with global mapper to prepare gis info for 3dsmax, by saving out projection file for mga gda94 zone 55, and then editing that in a text editor to adjust the false northing and false easting to offset that back to the center point at 0,0,0.
    = OK

    Ideally i'd like rc, 3dsmax, global mapper all in the same local space. because I'd also like to bring in tree data sets have so i can replace trees done in rc with high res 3d models. as well as any other cad information
    = OK

    though I think rc project and output co-ordinates really should cover that pretty well. its really just controlling its rotation, and having them different between viewport and saved obj that i'm having issues with.
    = OK

    maybe I'm just having these issues because i haven't added any ground control points.
    = yup try it and let us know :D
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    rtfraser86

    Hi Chris

     

    I have the EXACT same problem - same projection and everything (GDA94 MGA Zone 55). However, I do have GCPs. When I export ortho-photos, it appears to put them into the WGS84 Geographic Coordinate system in decimal degrees (not projected coordinate system in metres).  I too want to open the files in Global Mapper and do processing before exporting to GIS. 

     

    Did you end up resolving this issue with RC - i.e. did you figure out how to export in GDA94 MGA Zone 55?

     

    Cheers

    Reece

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    Zuzana Durickova 2

    Hello Reece,

    when you select the ortho, can you please check if it was created in that specific coordinate system? You can see it in the Selected ortho photo(s) table - Coordinate system. The ortho is exported in a coordinate system in which it was created. You can define the coordinate system for your ortho before it is rendered in the Ortho Projection Tool - Info - Coordinate system.

     

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