# Initial processing: incorrect alignment

**URL:** <https://community.pix4d.com/t/initial-processing-incorrect-alignment/9998>\
**Category:** PIX4Dmapper Questions/Troubleshooting\
**Created:** [November 26, 2019, 1:34pm UTC](https://community.pix4d.com/t/initial-processing-incorrect-alignment/9998 "2019-11-26T13:34:54Z")\
**Posts on this page:** 10\
**Page:** 1

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**Author:** ![Massimo\_Coli](https://avatars.discourse-cdn.com/v4/letter/m/ecd19e/32.png) [@Massimo\_Coli](https://community.pix4d.com/u/Massimo_Coli)\
**Post date:** [November 26, 2019, 1:34pm UTC](https://community.pix4d.com/t/initial-processing-incorrect-alignment/9998/1 "2019-11-26T13:34:54Z")

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Good morning,  
I am working on the reconstruction of the facades of a church.  
I made flights in manual mode, taking pictures with some overlap.  
The result of the initial process is the one shown in the attached photo: part of the facade is curved.  
Some photos do not seem to be correctly aligned.

I had thought that it was linked to a wrong correction of image distortion, but even processing the images correcting the distortion the same problem occurs.

 ![Facciata](https://global.discourse-cdn.com/pix4d/original/1X/6e4a2adfa93e3a54d67c0cad4bf6d45366dd2606.jpeg)

Thanks

Massimo

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**Author:** ![Beata](https://sea2.discourse-cdn.com/pix4d/user_avatar/community.pix4d.com/beata/32/187_2.png) [@Beata](https://community.pix4d.com/u/Beata)\
**Post date:** [November 29, 2019, 1:19pm UTC](https://community.pix4d.com/t/initial-processing-incorrect-alignment/9998/2 "2019-11-29T13:19:30Z")

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Hi Massimo,

Have you tried adding MTPs to the wall?  
Could you share here with us your Quality Report?

Best

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<div class="post-metadata">

**Author:** ![Massimo\_Coli](https://avatars.discourse-cdn.com/v4/letter/m/ecd19e/32.png) [@Massimo\_Coli](https://community.pix4d.com/u/Massimo_Coli)\
**Post date:** [November 29, 2019, 8:09pm UTC](https://community.pix4d.com/t/initial-processing-incorrect-alignment/9998/3 "2019-11-29T20:09:18Z")

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Hi Beata,  
no, I haven’t tried to use MTPs yet.  
I tried to process the images by setting the calibration method to “accurate geolocation and orientation” and the result is much better.  
However I don’t know if it’s correct to use this setting.  
I attach the Quality Report file.

[B1\_Mattina\_00\_report.pdf](https://community.pix4d.com/uploads/short-url/bZ2iLTFi02ckVvpByofGxFA15oa.pdf) (157.3 KB)

Thank you

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<div class="post-metadata">

**Author:** ![Beata](https://sea2.discourse-cdn.com/pix4d/user_avatar/community.pix4d.com/beata/32/187_2.png) [@Beata](https://community.pix4d.com/u/Beata)\
**Post date:** [November 29, 2019, 8:30pm UTC](https://community.pix4d.com/t/initial-processing-incorrect-alignment/9998/4 "2019-11-29T20:30:13Z")

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Hi,

Are you sure it’s the right Quality Report?

I still see Calibration Method: Standard.

Let me know 🙂

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<div class="post-metadata">

**Author:** ![Massimo\_Coli](https://avatars.discourse-cdn.com/v4/letter/m/ecd19e/32.png) [@Massimo\_Coli](https://community.pix4d.com/u/Massimo_Coli)\
**Post date:** [November 30, 2019, 8:01am UTC](https://community.pix4d.com/t/initial-processing-incorrect-alignment/9998/5 "2019-11-30T08:01:54Z")

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Hi Beata,  
sorry, I explained wrongly.  
The quality report of B1\_Mattina\_00 is related to the standard calibration method.  
The result is visible in the photo of the first post.

Below I attach image and quality report of the procedure done with the calibration method "accurate geolocation and orientation”.

[B1\_Mattina\_02\_report.pdf](https://community.pix4d.com/uploads/short-url/rGF6lPQolscZd4rmmcZ8qVNeC2e.pdf) (192.4 KB)

 ![Facciata_1](https://global.discourse-cdn.com/pix4d/original/1X/c4a64ab13f89f49e1b235878d4fed24b725af64a.jpeg)

Thank you

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<div class="post-metadata">

**Author:** ![Beata](https://sea2.discourse-cdn.com/pix4d/user_avatar/community.pix4d.com/beata/32/187_2.png) [@Beata](https://community.pix4d.com/u/Beata)\
**Post date:** [December 2, 2019, 1:16pm UTC](https://community.pix4d.com/t/initial-processing-incorrect-alignment/9998/6 "2019-12-02T13:16:35Z")

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Hi,

Thank you for the clarification!

You have the Phantom 4 RTK so you can use the Accurate Geolocation and Orientation pipeline.

However, I recommend double-checking the accurancy of your geotags. It could be that it’s a little too optimistic for your dataset. Please reduce it a little and reprocess the project. Afterwards, the _Absolute Geolocation Variance_ in the Quality Report should show better results.

Best

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<div class="post-metadata">

**Author:** ![Massimo\_Coli](https://avatars.discourse-cdn.com/v4/letter/m/ecd19e/32.png) [@Massimo\_Coli](https://community.pix4d.com/u/Massimo_Coli)\
**Post date:** [December 2, 2019, 1:37pm UTC](https://community.pix4d.com/t/initial-processing-incorrect-alignment/9998/7 "2019-12-02T13:37:07Z")

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Hi,  
thank you for your suggestion.  
Sorry, but where can i change the accurancy of my geotags? in the image properties editor?

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<div class="post-metadata">

**Author:** ![Beata](https://sea2.discourse-cdn.com/pix4d/user_avatar/community.pix4d.com/beata/32/187_2.png) [@Beata](https://community.pix4d.com/u/Beata)\
**Post date:** [December 2, 2019, 1:38pm UTC](https://community.pix4d.com/t/initial-processing-incorrect-alignment/9998/8 "2019-12-02T13:38:14Z")

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Yes, exactly there 🙂

 ![image](https://global.discourse-cdn.com/pix4d/original/1X/003101d5df80becf4cfa76e44d42e7874a11ffe9.png)

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<div class="post-metadata">

**Author:** ![Massimo\_Coli](https://avatars.discourse-cdn.com/v4/letter/m/ecd19e/32.png) [@Massimo\_Coli](https://community.pix4d.com/u/Massimo_Coli)\
**Post date:** [December 2, 2019, 1:42pm UTC](https://community.pix4d.com/t/initial-processing-incorrect-alignment/9998/9 "2019-12-02T13:42:50Z")

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ok.  
So I try to increase the values manually an reprocess everything.

Thank you

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<div class="post-metadata">

**Author:** ![Beata](https://sea2.discourse-cdn.com/pix4d/user_avatar/community.pix4d.com/beata/32/187_2.png) [@Beata](https://community.pix4d.com/u/Beata)\
**Post date:** [December 2, 2019, 1:47pm UTC](https://community.pix4d.com/t/initial-processing-incorrect-alignment/9998/10 "2019-12-02T13:47:36Z")

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Let me know how it goes.

Regards
