You are not logged in.

> The forum rules have been updated. Please take a moment to read them.


#1 2012-02-07 02:50:29

esotericvision
Member
Registered: 2011-11-18
Posts: 27

Stitched images too dark. How do I adjust the settings?

Hi,

I've been using PT Gui in my workflow for years now. Recently, I tried PTP and was very impressed so I bought it. I decided to test Autopano Pro. I had taken some shots in a dark bar and tried to stitch an image with this software. The preview image showed fairly accurate color but the final stitched image was extremely dark. I tried processing it several ways and it never got any better. Any suggestions on setting? The output (tiff, jpg)  looked the same everytime but the preview indicated the colors and exposure I expected.

NOTE:  The images were taken with a Sigma 8mm f3.5, 5D Mark II, ISO 6400 for a spherical pano.

Best,

Ben

Last edited by esotericvision (2012-02-07 02:53:53)

Offline

 

#2 2012-02-09 10:02:21

AlexandreJ
Kolor CEO
From: Francin, France
Registered: 2005-11-14
Posts: 7917
Website

Re: Stitched images too dark. How do I adjust the settings?

It can be related to many part so perhaps could you post here one input image and the rendered output so we can guess where it comes from.
Some ideas to look at :
- color correction : enabled ? disabled ?
- rendering mode ?
- input images : raw or jpg, tiff ?

Offline

 

#3 2012-02-10 19:41:22

jeradg
Member
Registered: 2012-01-17
Posts: 101

Re: Stitched images too dark. How do I adjust the settings?

I have tried using Workflow Case B and E, but I am getting dark sections or entire darkness depending on which images I have for detection. Prior to 2.6.1 I was not having this problem.

My goal is to output as HDR, adjust color/lighting in Photoshop CS5, and then put into Panotour.

This jpg looks a lot like the preview inside AP, but not quite as bad.

Edit: The one in the classroom with a dark spot to the left is very common. It's almost always dark on the left. I output this as HDR then converted 16 bit and then saved as jpg.


Uploaded Images

Last edited by jeradg (2012-02-10 20:41:59)

Offline

 

#4 2012-02-10 21:18:03

klausesser
Member
From: Düsseldorf, Germany
Registered: 2006-05-22
Posts: 6436
Website

Re: Stitched images too dark. How do I adjust the settings?

jeradg wrote:

I have tried using Workflow Case B and E, but I am getting dark sections or entire darkness depending on which images I have for detection. Prior to 2.6.1 I was not having this problem.

My goal is to output as HDR, adjust color/lighting in Photoshop CS5, and then put into Panotour.

This jpg looks a lot like the preview inside AP, but not quite as bad.

Edit: The one in the classroom with a dark spot to the left is very common. It's almost always dark on the left. I output this as HDR then converted 16 bit and then saved as jpg.

Hi!

Did you try color-correction and anchors?

best, Klaus


If you want something you´ve never had,
then you´ve got to do something you´ve never done.

Offline

 

#5 2012-02-10 22:29:02

jeradg
Member
Registered: 2012-01-17
Posts: 101

Re: Stitched images too dark. How do I adjust the settings?

klausesser wrote:

jeradg wrote:

I have tried using Workflow Case B and E, but I am getting dark sections or entire darkness depending on which images I have for detection. Prior to 2.6.1 I was not having this problem.

My goal is to output as HDR, adjust color/lighting in Photoshop CS5, and then put into Panotour.

This jpg looks a lot like the preview inside AP, but not quite as bad.

Edit: The one in the classroom with a dark spot to the left is very common. It's almost always dark on the left. I output this as HDR then converted 16 bit and then saved as jpg.

Hi!

Did you try color-correction and anchors?

best, Klaus

Hey Klaus,

I always appreciate your quick replies. I have tried doing the color correction, but without my exif info (I haven't yet attempted the exiftools) I am only able to do the LDR color correction. The LDR color correction changes the colors and doesn't really make much of an impact on the shadowing/sectioning.

And mid-post (just now before starting this paragraph) I started messing with the anchors, and I might be able to work with that some after I figure out how to use it... I will update after I get the chance to work it some more.

Offline

 

#6 2012-02-13 18:38:15

AlexandreJ
Kolor CEO
From: Francin, France
Registered: 2005-11-14
Posts: 7917
Website

Re: Stitched images too dark. How do I adjust the settings?

Can you try 2.6.2 RC2 which has a fix for 360° blending that looks like this kind of issue ?
( don't use TIFF 16 but PSD 16bits ).

Offline

 

#7 2012-02-13 21:55:36

jeradg
Member
Registered: 2012-01-17
Posts: 101

Re: Stitched images too dark. How do I adjust the settings?

AlexandreJ wrote:

Can you try 2.6.2 RC2 which has a fix for 360° blending that looks like this kind of issue ?
( don't use TIFF 16 but PSD 16bits ).

I am already using 2.6.2 RC2. I had to start using it to get past the 2.6.1 crash error last week.

I will be trying Klaus's suggestion tomorrow to see if that helps. The rendering doesn't seem to make much of a difference (although I have only tried hdr and jpg thus far).

Offline

 

#8 2012-12-18 20:26:12

homelands
New member
Registered: 2012-12-18
Posts: 5

Re: Stitched images too dark. How do I adjust the settings?

I am having the same problem with AP Pro 3.0 -

When I view the image in the Editor window it looks bright and even burned in places, but when processed it shows in photoshop or acdsee as too dark and excessive contrast. I have tried many permutations of the settings and have found no useful/predictable setting that works. This problem holds true using the same source images on 2 different PCs on which AP Pro 3 is installed. It appears to be gamma-related; when it shows in the AP Pro Editor it is at a higher gamma, but when rendered it appears to be produced at a lower gamma than the editor shows.

Anyone else notice this or have a solution?


Uploaded Images

Last edited by homelands (2012-12-18 21:01:14)

Offline

 

#9 2012-12-18 20:32:57

HansKeesom
Member
Registered: 2010-07-19
Posts: 1422
Website

Re: Stitched images too dark. How do I adjust the settings?

Did you make the photos with camera on M and manual whitebalance?


Regards,  Hans Keesom
I stitch and render for other photographers see http://tinyurl.com/brxvlhg for details

Offline

 

#10 2012-12-18 23:58:38

homelands
New member
Registered: 2012-12-18
Posts: 5

Re: Stitched images too dark. How do I adjust the settings?

shutter-bracketed (constant aperture) hdr using Promote Control. There is no jpg manual white balance available on-camera, and there was no colour-correction chosen in AP

Offline

 

#11 2012-12-19 00:05:32

HansKeesom
Member
Registered: 2010-07-19
Posts: 1422
Website

Re: Stitched images too dark. How do I adjust the settings?

So A-mode with AWB if I jmay translate it to DSLR- terminoligy.....

So I assume that if you sort the photos by shuttertime you find more the 3 values, right?


Regards,  Hans Keesom
I stitch and render for other photographers see http://tinyurl.com/brxvlhg for details

Offline

 

#12 2012-12-19 07:10:31

homelands
New member
Registered: 2012-12-18
Posts: 5

Re: Stitched images too dark. How do I adjust the settings?

yes. they are stacked by 5 bracketed shots X 4 stacks = 20 full-frame fisheyes (Samyang 3.5 8mm)

Offline

 

#13 2012-12-19 08:35:42

HansKeesom
Member
Registered: 2010-07-19
Posts: 1422
Website

Re: Stitched images too dark. How do I adjust the settings?

Try M-mode and let us know how that goed.


Regards,  Hans Keesom
I stitch and render for other photographers see http://tinyurl.com/brxvlhg for details

Offline

 

#14 2012-12-19 10:41:38

mediavets
Moderator
From: Isleham, Cambridgeshire, UK.
Registered: 2007-11-14
Posts: 9732
Website

Re: Stitched images too dark. How do I adjust the settings?

homelands wrote:

There is no jpg manual white balance available on-camera?

Really? What camera did you use?

Last edited by mediavets (2012-12-19 10:42:00)


Andrew Stephens
Nikon D40, Nikkor 10.5mm fisheye, Sigma 8mm f3.5 fisheye, Nikkor 18-55/50/35mm lenses, Nodal Ninja 5 Lite, Nodal Ninja 4 with R-D16, Agno's MrotatorTCS short.
Nikon P5100, CP5000, CP995, FC-E8, WC-E63,WC-E68, TC-E2, Kaidan Kiwi 995, Bophoto pano bracket, Agno's MrotatorA.
Merlin/Orion robotic pano head + Papywizard on Nokia 770/N800/N810 and Windows 8/XP/2K.

Online

 

#15 2012-12-20 18:19:05

homelands
New member
Registered: 2012-12-18
Posts: 5

Re: Stitched images too dark. How do I adjust the settings?

By manual whitebalance I was thinking no white balance as with a RAW image. I use a D7000 for panos and it is particularly good at interior shooting auto wb, so I have used that setting for several years now. Have you found that a particular white-balance preset provides more consistent results re: gamma of editor display vis-a-vis the produced pano gamma?

As you see on the image in the earlier post, the editor in AP Pro 3 shows a well-balanced contrast and brightness with detail showing in darker areas, whereas the rendered image is dark dark dark. I have tried all sorts of settings on two different PCs and both yield similar unsatisfactory results.

Offline

 

#16 2012-12-20 19:35:26

HansKeesom
Member
Registered: 2010-07-19
Posts: 1422
Website

Re: Stitched images too dark. How do I adjust the settings?

With M-mode I refer to programm mode M, part of the series P, S, A, M you will find on the knob on the top left of your camera. Which mode do you normally use?


Regards,  Hans Keesom
I stitch and render for other photographers see http://tinyurl.com/brxvlhg for details

Offline

 

#17 2012-12-21 01:33:20

homelands
New member
Registered: 2012-12-18
Posts: 5

Re: Stitched images too dark. How do I adjust the settings?

Manual - but the camera is controlled by Promote Control HDR device providing more brackets and Exposure values than the camera on its own (5 brackets at 1.7 EV each.

Offline

 

#18 2012-12-21 02:49:49

gkaefer
Member
From: Salzburg
Registered: 2009-06-09
Posts: 2678
Website

Re: Stitched images too dark. How do I adjust the settings?

homelands wrote:

Manual - but the camera is controlled by Promote Control HDR device providing more brackets and Exposure values than the camera on its own (5 brackets at 1.7 EV each.

lol - if you dont listen to real good and proofen tips... why do you ask at all?
sorry now for writing like a teacher:

set your lens to manual focus
set your camera to manual focus
set your camera to manual aperture
set your camera to manual exposure time
set your camera tn manual whitebalance
(shoot raw for later changeing whitebalance and some other values if needed)

ever (*)

and also when using promote control device. if you dont trust us here then look this promote-systems video. its 8 minute long and if you in hurry then jump to minute 4:20 or so: "set your camera to manual..."
http://www.youtube.com/watch?v=TstWu67p … tube_gdata

(*) in combination with promote control there is also an execption from this rule: if you use focus stacking and you have in consequence a camera with live view than focus is not manual set.

Georg

PS:
and the reason is also very simple: if your camera is NOT in manual mode, than how can you be sure the promote control is overruling the camera internal settings and who gives you guarantee that your camera is using for all images the same settings & values...
and if no promote control is used: than the manual mode gives you complete equally developed images your stitching program can stitch without having dark or very bright spots in some parts of your pano...
(it may happen that all images than are to brigthen or to dark, but this can be solved in the raw images at first and later autopano has a much easier jpb to do to balance the complete pano...)

Last edited by gkaefer (2012-12-21 03:02:00)

Offline

 

Board footer

Powered by PunBB
© Copyright 2002–2005 Rickard Andersson