POV-Ray : Newsgroups : povray.off-topic : Looking for an Android HDR Panorama camera app Server Time
25 Dec 2024 14:35:20 EST (-0500)
  Looking for an Android HDR Panorama camera app (Message 1 to 8 of 8)  
From: Nekar Xenos
Subject: Looking for an Android HDR Panorama camera app
Date: 26 Jun 2014 14:47:00
Message: <op.xh2rshz8ufxv4h@xena.home>
Has anyone come across one? I've found many HDR camera apps and many  
Panoram apps and many that can do both, but not both in one image.

I would like to be able to take hdr 360 panoramas with my phone for  
renderings.

-- 
-Nekar Xenos-


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From: Jim Henderson
Subject: Re: Looking for an Android HDR Panorama camera app
Date: 26 Jun 2014 15:10:01
Message: <53ac7009$1@news.povray.org>
On Thu, 26 Jun 2014 20:46:55 +0200, Nekar Xenos wrote:

> Has anyone come across one? I've found many HDR camera apps and many
> Panoram apps and many that can do both, but not both in one image.
> 
> I would like to be able to take hdr 360 panoramas with my phone for
> renderings.

I would love to find something like this as well - my Galaxy S5 phone's 
camera can do HDR and it can do panoramas, but like you note, it can't do 
both for some reason.

Jim



-- 
"I learned long ago, never to wrestle with a pig. You get dirty, and 
besides, the pig likes it." - George Bernard Shaw


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From: Kevin Wampler
Subject: Re: Looking for an Android HDR Panorama camera app
Date: 27 Jun 2014 12:55:17
Message: <53ada1f5@news.povray.org>
On 6/26/2014 12:10 PM, Jim Henderson wrote:
>
> I would love to find something like this as well - my Galaxy S5 phone's
> camera can do HDR and it can do panoramas, but like you note, it can't do
> both for some reason.
>

One guess for why it doesn't do both is that the two photography modes 
have contrasting requirements.  For HDR you want to hold the camera 
still so it can easily align the different exposures, but for panoramas 
you need to move the camera.  Not that solving this is impossible, but I 
bet getting really nice results would be trickier than with either alone.

Barring the possibility that some app already exists to do this, if 
you're (or rather if Nekar's) willing to spend some time on it, the 
easiest option I can think of is to capture a bunch of independent HDR 
photos, then stitch them into a panorama after the fact.  The images 
might have to be downloaded to the desktop to do the stitching though.


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From: Jim Henderson
Subject: Re: Looking for an Android HDR Panorama camera app
Date: 27 Jun 2014 14:39:12
Message: <53adba50$1@news.povray.org>
On Fri, 27 Jun 2014 09:55:26 -0700, Kevin Wampler wrote:

> On 6/26/2014 12:10 PM, Jim Henderson wrote:
>>
>> I would love to find something like this as well - my Galaxy S5 phone's
>> camera can do HDR and it can do panoramas, but like you note, it can't
>> do both for some reason.
>>
>>
> One guess for why it doesn't do both is that the two photography modes
> have contrasting requirements.  For HDR you want to hold the camera
> still so it can easily align the different exposures, but for panoramas
> you need to move the camera.  Not that solving this is impossible, but I
> bet getting really nice results would be trickier than with either
> alone.
> 
> Barring the possibility that some app already exists to do this, if
> you're (or rather if Nekar's) willing to spend some time on it, the
> easiest option I can think of is to capture a bunch of independent HDR
> photos, then stitch them into a panorama after the fact.  The images
> might have to be downloaded to the desktop to do the stitching though.

Possibly, though the way the app for the S5 works, you have to hold still 
for each exposure in a 360° picture (as well as a panorama), so it 
shouldn't be completely incompatible.

Though maybe the variance in light levels between exposures would/could 
create an inconsistent image.

Jim



-- 
"I learned long ago, never to wrestle with a pig. You get dirty, and 
besides, the pig likes it." - George Bernard Shaw


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From: Nekar Xenos
Subject: Re: Looking for an Android HDR Panorama camera app
Date: 28 Jun 2014 11:50:01
Message: <web.53aee31eac79a1b1866d0120@news.povray.org>
> Possibly, though the way the app for the S5 works, you have to hold still

> shouldn't be completely incompatible.
>
> Though maybe the variance in light levels between exposures would/could
> create an inconsistent image.
>
> Jim
>
I would prefer 360 panoramas, but it would be extremely difficult to do manualy
- especially with the sky having no reference points. Maybe with 5 exposures per
frame, you could at least get 3 matching exposures.

-Nekar Xenos-


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From: Francois Labreque
Subject: Re: Looking for an Android HDR Panorama camera app
Date: 28 Jun 2014 13:32:04
Message: <53aefc14$1@news.povray.org>
Le 2014-06-27 12:55, Kevin Wampler a écrit :
> On 6/26/2014 12:10 PM, Jim Henderson wrote:
>>
>> I would love to find something like this as well - my Galaxy S5 phone's
>> camera can do HDR and it can do panoramas, but like you note, it can't do
>> both for some reason.
>>
>
> One guess for why it doesn't do both is that the two photography modes
> have contrasting requirements.  For HDR you want to hold the camera
> still so it can easily align the different exposures, but for panoramas
> you need to move the camera.  Not that solving this is impossible, but I
> bet getting really nice results would be trickier than with either alone.

Solution 1:  Blur the ever-loving crap out of the result.  Since you're 
mostly looking for illumination, alignment errors between exposures 
shouldn' matter too much.

Solution 2:  (don't know if this is possible) create panoramic at 
various exposures and combine the panoramic pictures.

You'll probably have to work with a computer app to do that, rather than 
just a phone app, however.

-- 
/*Francois Labreque*/#local a=x+y;#local b=x+a;#local c=a+b;#macro P(F//
/*    flabreque    */L)polygon{5,F,F+z,L+z,L,F pigment{rgb 9}}#end union
/*        @        */{P(0,a)P(a,b)P(b,c)P(2*a,2*b)P(2*b,b+c)P(b+c,<2,3>)
/*   gmail.com     */}camera{orthographic location<6,1.25,-6>look_at a }


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From: Jim Henderson
Subject: Re: Looking for an Android HDR Panorama camera app
Date: 28 Jun 2014 15:29:29
Message: <53af1799$1@news.povray.org>
On Sat, 28 Jun 2014 11:47:12 -0400, Nekar Xenos wrote:

>> Possibly, though the way the app for the S5 works, you have to hold
>> still for each exposure in a 360° picture (as well as a panorama), so
>> it shouldn't be completely incompatible.
>>
>> Though maybe the variance in light levels between exposures would/could
>> create an inconsistent image.
>>
>> Jim
>>
> I would prefer 360 panoramas, but it would be extremely difficult to do
> manualy - especially with the sky having no reference points. Maybe with
> 5 exposures per frame, you could at least get 3 matching exposures.

The S5's built-in camera actually uses the sensors to detect the 
orientation of the camera, and it  takes multiple exposures as you move 
the lens through virtual markers.  The stitching isn't perfect 
(presumably because the camera actually needs to be rotated while 
stationary, which is tricky to do, certainly without practice), but it's 
not bad.

Jim


-- 
"I learned long ago, never to wrestle with a pig. You get dirty, and 
besides, the pig likes it." - George Bernard Shaw


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From: Nekar Xenos
Subject: Re: Looking for an Android HDR Panorama camera app
Date: 28 Jun 2014 15:51:54
Message: <op.xh6j4mzuufxv4h@xena.home>
On Sat, 28 Jun 2014 21:29:29 +0200, Jim Henderson <nos### [at] nospamcom>  

wrote:

> On Sat, 28 Jun 2014 11:47:12 -0400, Nekar Xenos wrote:
>
>>> Possibly, though the way the app for the S5 works, you have to hold

 so
>>> it shouldn't be completely incompatible.
>>>
>>> Though maybe the variance in light levels between exposures would/co
uld
>>> create an inconsistent image.
>>>
>>> Jim
>>>
>> I would prefer 360 panoramas, but it would be extremely difficult to 
do
>> manualy - especially with the sky having no reference points. Maybe w
ith
>> 5 exposures per frame, you could at least get 3 matching exposures.
>
> The S5's built-in camera actually uses the sensors to detect the
> orientation of the camera, and it  takes multiple exposures as you mov
e
> the lens through virtual markers.  The stitching isn't perfect
> (presumably because the camera actually needs to be rotated while
> stationary, which is tricky to do, certainly without practice), but it
's
> not bad.
>
> Jim
>

The G2 does the same. Multiple 360 panoramas wouldn't line up, so it wou
ld  

be better to ake multiple hdr photos, but then you don't get those helpf
ul  

markers.
If someone could just hack the 360 camera to use the hdr camera for each
  

shot. It sounds so simple. :)

-- 

-Nekar Xenos-


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