Re: [hugin-ptx] [Request]: Resolve confusion between "Distance" and "Correlation"

2021-02-15 Thread Donald Johnston 
I did not know that. Thanks. I use DxO to make sure the images are as free from 
camera and lens distortion as possible. I think hugin can then do its magic a 
bit better. 

⁣Don​

On Feb. 15, 2021, 3:44 a.m., at 3:44 a.m., Klaus Foehl  
wrote:
>Hello,
>
>On 09.02.21 04:28, dgjohnston wrote:
>> Before I use hugin I usually use DxO PhotoLab to correct for lens and
>
>> camera body distortion. Does anyone know if DxO uses
>the Brown-Conrady 
>> lens model for their routines or anything similar?
>
>You probably know that hugin uses "abc" of which only b is a proper 
>parameter of the Brown-Conrady lens model.
>
>Best regards,
>
>Klaus
>
>-- 
>A list of frequently asked questions is available at:
>http://wiki.panotools.org/Hugin_FAQ
>--- 
>You received this message because you are subscribed to the Google
>Groups "hugin and other free panoramic software" group.
>To unsubscribe from this group and stop receiving emails from it, send
>an email to hugin-ptx+unsubscr...@googlegroups.com.
>To view this discussion on the web visit
>https://groups.google.com/d/msgid/hugin-ptx/e93df20d-e290-5c55-edf9-ac3cd6b8c123%40gmail.com.

-- 
A list of frequently asked questions is available at: 
http://wiki.panotools.org/Hugin_FAQ
--- 
You received this message because you are subscribed to the Google Groups 
"hugin and other free panoramic software" group.
To unsubscribe from this group and stop receiving emails from it, send an email 
to hugin-ptx+unsubscr...@googlegroups.com.
To view this discussion on the web visit 
https://groups.google.com/d/msgid/hugin-ptx/3a43e8f3-ee8a-440e-aec9-0ebf95799c14%40accesscomm.ca.

Re: [hugin-ptx] [Request]: Resolve confusion between "Distance" and "Correlation"

2021-02-15 Thread Klaus Foehl 

Hello,

On 09.02.21 04:28, dgjohnston wrote:
Before I use hugin I usually use DxO PhotoLab to correct for lens and 
camera body distortion. Does anyone know if DxO uses the Brown-Conrady 
lens model for their routines or anything similar?


You probably know that hugin uses "abc" of which only b is a proper 
parameter of the Brown-Conrady lens model.


Best regards,

Klaus

--
A list of frequently asked questions is available at: 
http://wiki.panotools.org/Hugin_FAQ
--- 
You received this message because you are subscribed to the Google Groups "hugin and other free panoramic software" group.

To unsubscribe from this group and stop receiving emails from it, send an email 
to hugin-ptx+unsubscr...@googlegroups.com.
To view this discussion on the web visit 
https://groups.google.com/d/msgid/hugin-ptx/e93df20d-e290-5c55-edf9-ac3cd6b8c123%40gmail.com.

Re: [hugin-ptx] [Request]: Resolve confusion between "Distance" and "Correlation"

2021-02-10 Thread Abrimaal 
"Fine tune all points" is usable. I often make two versions of the same 
panorama, with and without Fine tune.
It is often visible on the preview, that the panorama layout changes after 
fine tuning.
When adding control points manually, a human selects the most sharp edges 
and the highest contrasts.
The detector (I think) compares blocks X × Y pixels, this is why these 
points look misplaced.
The similarity is very low.

The image is an example, that points 5, 7, 8, 10, 11 are auto-detected, 
where a human would never place control points.
Points 9, 12, 13 are added manually and fine tuned.
After deletion of the misplaced points 5, 7, 8 the final result may be much 
better.
It would be much better if "Fine tune all points" automatically removed 
points with low correlation.
Correlation is similarity, and it is not related to distance (in pixels).

By the way, this is an analogue scan, the result may differ from digital 
photos.
The points could be placed on dust :)
[image: misplaced control points.jpg] 





On Tuesday, February 9, 2021 at 5:11:31 AM UTC+1 Groogle wrote:

> On Monday, 8 February 2021 at 21:28:45 -0600, dgjohnston wrote:
> > Before I use hugin I usually use DxO PhotoLab to correct for lens
> > and camera body distortion.
>
> Yes, I do that too.
>
> > Does anyone know if DxO uses the Brown-Conrady lens model for their
> > routines or anything similar?
>
> The DxO developers will know. Why don't you ask a question of
> support?
>
> Greg
> --
> Sent from my desktop computer.
> Finger groo...@gmail.com for PGP public key.
> See complete headers for address and phone numbers.
> This message is digitally signed. If your Microsoft mail program
> reports problems, please read http://lemis.com/broken-MUA
>

-- 
A list of frequently asked questions is available at: 
http://wiki.panotools.org/Hugin_FAQ
--- 
You received this message because you are subscribed to the Google Groups 
"hugin and other free panoramic software" group.
To unsubscribe from this group and stop receiving emails from it, send an email 
to hugin-ptx+unsubscr...@googlegroups.com.
To view this discussion on the web visit 
https://groups.google.com/d/msgid/hugin-ptx/945f95c1-1922-4281-bc79-4b6dbc8fad01n%40googlegroups.com.

Re: [hugin-ptx] [Request]: Resolve confusion between "Distance" and "Correlation"

2021-02-08 Thread Greg 'groggy' Lehey 
On Monday,  8 February 2021 at 21:28:45 -0600, dgjohnston wrote:
> Before I use hugin I usually use DxO PhotoLab to correct for lens
> and camera body distortion.

Yes, I do that too.

> Does anyone know if DxO uses the Brown-Conrady lens model for their
> routines or anything similar?

The DxO developers will know.  Why don't you ask a question of
support?

Greg
--
Sent from my desktop computer.
Finger groog...@gmail.com for PGP public key.
See complete headers for address and phone numbers.
This message is digitally signed.  If your Microsoft mail program
reports problems, please read http://lemis.com/broken-MUA

-- 
A list of frequently asked questions is available at: 
http://wiki.panotools.org/Hugin_FAQ
--- 
You received this message because you are subscribed to the Google Groups 
"hugin and other free panoramic software" group.
To unsubscribe from this group and stop receiving emails from it, send an email 
to hugin-ptx+unsubscr...@googlegroups.com.
To view this discussion on the web visit 
https://groups.google.com/d/msgid/hugin-ptx/20210209041126.GE6168%40eureka.lemis.com.


signature.asc
Description: PGP signature

Re: [hugin-ptx] [Request]: Resolve confusion between "Distance" and "Correlation"

2021-02-08 Thread dgjohnston 
Before I use hugin I usually use DxO PhotoLab to correct for lens and camera 
body distortion. Does anyone know if DxO uses the Brown-Conrady lens model for 
their routines or anything similar?

In the wikipedia entry for “Distortion” there is one comment about this:
DxO Labs ' Optics Pro can correct 
complex distortion, and takes into account the focus distance.

Optics Pro was renamed to PhotoLab in a previous release.

Also look at DxOMark the company that does the lens and camera testing to 
create the correction modules for lens-camera pairs.

Don J.

> On Feb 8, 2021, at 7:07 AM, Klaus Foehl  wrote:
> 
> On 31.01.21 19:15, 'ChameleonScales' via hugin and other free panoramic 
> software wrote:
> 
>> I assemble natural landscape panoramas which have to be stitched as 
>> precisely as possible.
> 
> Maybe you are aware that hugin implements only a small number of distortion 
> parameters from the Brown-Conrady lens model. Higher order physical lens 
> distortions are unaccounted for.
> 
> Does hugin so far satisfy your precision requirements?
> 
> Best regards
> 
> Klaus
> 
> -- 
> A list of frequently asked questions is available at: 
> http://wiki.panotools.org/Hugin_FAQ
> --- You received this message because you are subscribed to the Google Groups 
> "hugin and other free panoramic software" group.
> To unsubscribe from this group and stop receiving emails from it, send an 
> email to hugin-ptx+unsubscr...@googlegroups.com.
> To view this discussion on the web visit 
> https://groups.google.com/d/msgid/hugin-ptx/e1c1e6cc-366d-cfe7-0cbb-1d53d712f848%40gmail.com.

-- 
A list of frequently asked questions is available at: 
http://wiki.panotools.org/Hugin_FAQ
--- 
You received this message because you are subscribed to the Google Groups 
"hugin and other free panoramic software" group.
To unsubscribe from this group and stop receiving emails from it, send an email 
to hugin-ptx+unsubscr...@googlegroups.com.
To view this discussion on the web visit 
https://groups.google.com/d/msgid/hugin-ptx/4D7759D3-60F7-4E9B-AB26-F9D3E2BB401A%40accesscomm.ca.

[hugin-ptx] [Request]: Resolve confusion between "Distance" and "Correlation"

2021-01-31 Thread 'ChameleonScales' via hugin and other free panoramic software 
> with cpfind or other the function "fine-tune all" is not needed at all

Ok, but seeing the correlation lets you know if, for example, the wind moves 
plants and the control point patterns are less alike than in other areas

-- 
A list of frequently asked questions is available at: 
http://wiki.panotools.org/Hugin_FAQ
--- 
You received this message because you are subscribed to the Google Groups 
"hugin and other free panoramic software" group.
To unsubscribe from this group and stop receiving emails from it, send an email 
to hugin-ptx+unsubscr...@googlegroups.com.
To view this discussion on the web visit 
https://groups.google.com/d/msgid/hugin-ptx/l6Kuqe_sVQi2bcYcsBhNzbubJw-oKO6UMqlz6EJ_xF1H3PHpCtRRHYhmhe3WPd5ME2LCkfz5fN66ji3gD4Mc_J4uxp7K6Mqvkoamuat7ljk%3D%40protonmail.com.

[hugin-ptx] [Request]: Resolve confusion between "Distance" and "Correlation"

2021-01-31 Thread 'ChameleonScales' via hugin and other free panoramic software 
Ok, a few things:
So I was using the Debian repository version (2018) and in this version the 
header did not change to "Correlation". I just tried on the latest appimage and 
indeed this has been solved, so that's my mistake.
However, on this same appimage 
([20210130)](https://github.com/aferrero2707/hugin-appimage/releases/download/continuous/Hugin_Panorama_Creator-git-20210130-x86_64.AppImage),
 when you click on "Select by distance", the values change back to distance but 
the header is still "Correlation".
In any case, I think it would make things clearer and provide more information 
if the Correlation column was added next to the Distance column. Do you see a 
reason not to?

-- 
A list of frequently asked questions is available at: 
http://wiki.panotools.org/Hugin_FAQ
--- 
You received this message because you are subscribed to the Google Groups 
"hugin and other free panoramic software" group.
To unsubscribe from this group and stop receiving emails from it, send an email 
to hugin-ptx+unsubscr...@googlegroups.com.
To view this discussion on the web visit 
https://groups.google.com/d/msgid/hugin-ptx/_KJbs3sVuSHSMjswVB7RWq9Ncrb3-PtWL4iUoJq6VVzbZhX0bn8TKPZGE8ZqAt-aD_yOSMadI1yb0u-SNOJr3StKO6UcUIeiTqVaZrAivMU%3D%40protonmail.com.

[hugin-ptx] [Request]: Resolve confusion between "Distance" and "Correlation"

2021-01-30 Thread 'ChameleonScales' via hugin and other free panoramic software 
As [this wiki 
page](http://hugin.sourceforge.net/docs/manual/Hugin_Control_Points_table.html) 
explains, after Fine-tuning all Points, the Distance column shows the 
correlation. I find this confusing. Distance and correlation are not the same 
thing. Would it be possible to instead add a Correlation column and leave the 
Distance column separate?

-- 
A list of frequently asked questions is available at: 
http://wiki.panotools.org/Hugin_FAQ
--- 
You received this message because you are subscribed to the Google Groups 
"hugin and other free panoramic software" group.
To unsubscribe from this group and stop receiving emails from it, send an email 
to hugin-ptx+unsubscr...@googlegroups.com.
To view this discussion on the web visit 
https://groups.google.com/d/msgid/hugin-ptx/YTa3SH-MbosGmsr67iOdiApl3iVFaMFsbe5FJx8cd2ErvsTcjhedbR0uX3nN8Z9E1KRpzFzOOiCEvTKCKOKG9ZtANT5g6PXrbDp_0hmDUfw%3D%40protonmail.com.