Hugin making images more grey and losing color

[Amma Mar]

Running v 2014.0.0.5da69bc383dd

See attachment.

Some things I notice:  

+ I have to increase blacks/contrast QUITE A BIT (typically-75 black on LR scale) just to get it to return close to normal.  

+ However, upon closer inspection, colors are lacking, constrast is greyer, and detail is lost.  I can adjust/compensate but it doesn't look as rich as the original

+ This never happened before, but with this version (the previous had the nociecam issue IIRC, which I asked for help about here as well, so I'd prefer to use the newest version) every pano  has come out like this.  I've "dealt withit', but I really like this view so that pushed me over the edge to get help.

I attached some photos.  

Single Image:  Image that is exported prior to stitch

WhatIexpectedtoLookmoreLike:  What the Preview stitch looks like - notice the richer colors

completenao_lessdetail_grey: Notice how it lacking in contrast, colors and etail.

I'm not adjusting/changing any blending parameters to my knowledge

Any advice please?  

Thanks!

[David W. Jones]

Hmm, which OS? And I hadn't heard that the nociecam issue was fixed?

On 02/20/2015 06:24 PM, Amma Mar wrote:
> Running v 2014.0.0.5da69bc383dd
>
>
> See attachment.
>
> Some things I notice:
> + I have to increase blacks/contrast QUITE A BIT (typically-75 black on
> LR scale) just to get it to return close to normal.
> + However, upon closer inspection, colors are lacking, constrast is
> greyer, and detail is lost. I can adjust/compensate but it doesn't look
> as rich as the original
> + This never happened before, but with this version (the previous had
> the nociecam issue IIRC, which I asked for help about here as well, so

> I'd prefer to use the newest version) _every pano_ has come out like

> this. I've "dealt withit', but I really like this view so that pushed
> me over the edge to get help.
>
> I attached some photos.
>
> Single Image: Image that is exported prior to stitch
> WhatIexpectedtoLookmoreLike: What the Preview stitch looks like -
> notice the richer colors
> completenao_lessdetail_grey: Notice how it lacking in contrast, colors
> and etail.
>
> I'm not adjusting/changing any blending parameters to my knowledge
>
> Any advice please?
>
> Thanks!

--
David W. Jones
gnome...@gmail.com
wandering the landscape of god
http://dancingtreefrog.com

[Amma Mar]

Win 7 SP1

Yes yes it was fixed.  I meant to say that I didn't want to go back to the previous version because I didn't want to deal with --nociecam again.  I apologize for the confusion.  

[Terry Duell]

Hello Amma,

On Sat, 21 Feb 2015 15:24:24 +1100, Amma Mar <alphah...@gmail.com>
wrote:

> Running v 2014.0.0.5da69bc383dd
>
[snip]

> + This never happened before, but with this version (the previous had the
> nociecam issue IIRC, which I asked for help about here as well, so I'd

> prefer to use the newest version) *every pano* has come out like this.

> I've "dealt withit', but I really like this view so that pushed me over
> the edge to get help.
>

Let's establish a few things.
What is the output of 'enblend -V' ?
If you choose as your output from the stitcher 'Remapped Images : Exposure
corrected, low dynamic range', do the resulting images show the same
effect as your stitched panos?
(you can get to this selection by choosing 'Advanced' or 'Expert'
interface and after creating control points and Optimising in the Photos
tab, select the Stitcher tab, choose the remapped output, then Stitch!)
If your remapped images show the grey and loss of colour as your stitched
panos, then something is happening in hugin, else the problem is with
enblend.

Cheers,
--
Regards,
Terry Duell

[Amma Mar]

enblend 4.1.1

See attached image for my settings.  It does have the  'Remapped Images : Exposure   corrected, low dynamic range' does appear that was checked.  

[David W. Jones]

No problem!

I have enblend 4.1.3 here, but running 64-bit Linux. Don't have the same
problem. I could have sworn that I still had --nociecam set as my
default for enblend, but I just checked and I don't. I think I
encountered the problem only once.

[Magnus Schmidt]

Hello,

 I just have the same problem as described by Amma Mar. I have done/noticed following things:

- Problem is similar to the first post: The resulting pano gets an icy/milky blur, which is not present in the original images nor in the previewpicture of hugin itself
- I only have this problem on some panoramas, other work wel
- Tried to preprocess images in Lightroom (adjust brigthness to same level in all Images), but does not help much
- I downscaled the example input images to make processing faster, result is the same as with fully scaled pictures
- Other backlight exposures do not suffer from this problem
- Tried to attach some meaningfulll pictures
- Version-Info: MacOSX 10.9, Build 2013.0.0, enblend 4.1.1
- Tried 2014.0.0, but GUI seems to be broken on Mac OSX (wxWidgets Debug Alert)

Regards,
Magnus

[Terry Duell]

This is a resend of my message, below, which hasn't turned up here on the
list,
Apologies if others have received that post and it is just missing here.
To add a little explanation, in case my aim wasn't clear, I had assumed
that you had checked that the effect of the --nociecam enblend switch, and
that it had not fixed your problem, in which case it is necessary to check
if the problem is with hugin or enblend.
By choosing output as "Remapped images", hugin will generate a series of
tiff images, each remapped to fit the pano, but not passed to enblend. If
these remapped images look OK then your problem is with enblend, and
trying "multiblend" as your blender should confirm that.
If however you haven't tried the --nociecam switch, then it is probably
easier to simply try that first to check if you are using a version that
still has that problem.

On Sat, 21 Feb 2015 17:30:45 +1100, Amma Mar <alphah...@gmail.com>
wrote:

>
>

> enblend 4.1.1
>
> See attached image for my settings. It does have the 'Remapped Images :
> Exposure corrected, low dynamic range' does appear that was checked.
>

No you don't have "Remapped images" checked, you have 'Panorama Outputs'
checked. Have a closer look.
Try the setting as I suggested, and if the remapped images are OK, then
try swapping enblend for multiblend and see what results that gives.
You can get multiblend here <http://horman.net/multiblend/>
Go to File -> Preferences, then in the Programs tab change Enblend
ececutable from 'enblend' to 'multiblend'

[Terry Duell]

On Sat, 21 Feb 2015 17:30:45 +1100, Amma Mar <alphah...@gmail.com>
wrote:

>
>

> enblend 4.1.1
>
> See attached image for my settings. It does have the 'Remapped Images :
> Exposure corrected, low dynamic range' does appear that was checked.
>

No you don't have "Remapped images" checked, you have 'Panorama Outputs'
checked. Have a closer look.
Try the setting as I suggested, and if the remapped images are OK, then
try swapping enblend for multiblend and see what results that gives.
You can get multiblend here <http://horman.net/multiblend/>
Go to File -> Preferences, then in the Programs tab change Enblend
ececutable from 'enblend' to 'multiblend'

[Terry Duell]

Hello Magnus,

Have you tried using the enblend option "--nociecam"?
If not, give that a try and report back if you still have problems.

--
Regards,
Terry Duell

[Amma Mar]

Yup that was it.  I still need to use --no-ciecam flag.  I'm surprised that something like this exists.  Now I'm debating whether or not I want to reprocess the last 28 panoramas, especially as I ended up doing some subsequent PP (some lengthy PP on a couple of them).  

Is there a way to add this to some kind of configuration file so it always boots up by default?  

[David W. Jones]

In Hugin? File > Preferences > Programs. Enter --no-ciecam in the
Default Arguments in the Enblend section.

I believe that changes the default for new projects. I don't know if
that will change it for earlier projects.

[Terry Duell]

On Wed, 25 Feb 2015 17:38:49 +1100, Amma Mar <alphah...@gmail.com>
wrote:

> Yup that was it. I still need to use --no-ciecam flag. I'm surprised
> that
> something like this exists. Now I'm debating whether or not I want to
> reprocess the last 28 panoramas, especially as I ended up doing some
> subsequent PP (some lengthy PP on a couple of them).
>
> Is there a way to add this to some kind of configuration file so it
> always boots up by default?
>

The problem has been fixed, but that fix is in a later version of enblend.
If I recall correctly it was fixed in enblend-4.1.3.
You can include the --nociecam switch by setting it in your hugin
preferences.
Go to File -> preferences, and under the Programs tab add --nociecam to
the Enblend Default Arguments.
The alternatives are to install enblend-4.1.3, or to install
multiblend-0.6.2.
If you install multiblend, in Preferences, Programs replace "enblend" with
"multiblend" as the Enblend executable.