Room Capture Only using 4 images of 300 In Image alignment.

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    daniel.osullivan

    Tom Foster see I don't think the camera I’m using would be accurate enough to get intricate detail from a 40mm ball. I’m using blu tack to stick up these A4 bad boys as I can’t do anything damaging in any way to the surfaces I’m working with.

    The colourful pattern is a good idea though. I will put some kind of colourful background around each shape on the A4 pages I’m using.

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    Tom Foster

    Depends on distance, I agree - I was within 2.5m in a domestic room.

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    daniel.osullivan

    How do these image markers look anything I could improve on before I drain all the printers? They are A4 size.

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    Jonathan_Tanant

    What I would do is try to align them in Reality Capture (just to run the feature detection) and have a look at the tie points in the image views.

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    Jonathan_Tanant

    They look great!

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    Tom Foster

    Yes but AFAIK the repeating border pattern, rows of Xmas trees, the repeating yellow pattern of the Clubs card will neither help nor hinder RC to disinguish one part of the pattern from another - waste of space! Useful features show no repeat.

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    daniel.osullivan

    https://imgur.com/VIpbZNV.png

    https://imgur.com/BVhk6jK.png

    So no matter what I do I cannot seem to get my components to merge I have one component containing pictures from 2 walls and another 2 components containing pictures from a single wall so together they make up all 4 walls. 

    I have added 3 control points that have over 20 images each and appear in all 3 components.

    I have tried adding more components but then I start getting red warning signs even though the control point is on the correct place on the image exactly.

    The way I have been adding control points is to click the control point tool then click on the area I want to be a control point on the scene. Then going in and adding all the images it finds.

    This way however only uses images that were in the components. Should I be going into them 2Ds and adding control points to images that have no tie points and don’t show up in any of the components?

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    Jonathan_Tanant

    3 control points is not enough.

    And the way you add them is not what I would recommend in the first place : you have to check one by one the pictures where the control points are added and correct the control point position by hand. The automatic control points placement is great, but relies on the current aligned component, so a bad alignment will give bad control points position on the pictures - and the control points are here to improve your alignments : a chicken and egg problem.

    So try to identify the pictures that -should- be aligned together but are not (pictures from 2 big but split components) and focus on them to add control points. And yes, you also need to identify the non-aligned images that could be aligned and add control points on them also.

    By the way, did you do a draft align? If not I would recommend to do one and give the results that you have.

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    daniel.osullivan

    A draft align just seems to give me the same results. I realised however that If I run align again after it gives me all the componets with 5 or so images without deleting them it will then give me better results. Ive managed to get it down to just one component now with about 500 images out of the 900 i took. 

    Im going to go though the non aliogned images and add in control points to them to see if I can get them to be picked up.

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    Jonathan_Tanant

    You can also play around with downscale factor, sensitivity and overlap settings

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    daniel.osullivan

    Jonathan_Tanant I was reluctent to touch them as im not 100% sure what they do. I have heard setting overlap to low can give good results on building scans though.

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    Jonathan_Tanant

    what are your current alignment settings?

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    daniel.osullivan

    Jonathan_Tanant just the default settings.  Sometimes I run it with 'Force Component rematch' on and  'Merge Components only' on but thet seems to give me errors alot. 

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    Jonathan_Tanant

    you should read the doc about the settings and what they do. Do not use "Merge components" for now.

    Try with the overlap at "low" and the reproj error at 3 and sensibility to medium (try high also).

     

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    Daciansolgen

    when I click on align it only says finished. contact me at dacsol@gmail.com with a solution by tomorrow please 

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