Pano generated from Insta360 has weird color artifacts
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Kira Prabhu
Sep 9, 2022, 9:45:04 AM9/9/22
to PTGui Support
I am generating panos from sets of 5 DNG images spaced 2 stops apart, captured by an Insta360 One X2. The camera was on a tripod, and operated by a remote shutter.
We are seeing some weird artifacts in the output panos. The colors look really odd (color chart, chair texture, in general they look faded). We are also seeing ringing and halos around color chart squares, light sources, and text. I've attached 2 sample screenshots - in one the halo-ing is very obvious, and the bottom row of the color chart should have the squares in decreasing order of brightness from white to black, but this is not the case.
I placed a full set of samples in this Drive folder, including project file, source images, and resulting pano.
I have exposure compensation and tone mapping off as we're using these for relighting. Is there something I'm missing?
PTGui Support
Sep 10, 2022, 2:52:03 AM9/10/22
to pt...@googlegroups.com
The problem seems to be that PTGui didn't pick up the ISO speed from the
images' metadata. The ISO varies significantly between images (between
100 and 405). Ignoring this (like PTGui currently does) will cause the
hdr merge to go wrong.
I've attached a project file where the ISO values have been filled in in
the Image Parameters tab, this looks good to me.
I'll investigate why the ISO values are not picked up, this might be a
bug in PTGui.
Kind regards,
Joost Nieuwenhuijse
www.ptgui.com
On 09/09/2022 21:42, John Houghton wrote:
> Kira, Try converting the dng files to tiff. I did this and made no
> other changes to your project file and got the attached screenshot of
> the Panorama Editor window.
>
> John
>
> On Friday, September 9, 2022 at 2:45:04 PM UTC+1 kmat...@google.com wrote:
>
> I am generating panos from sets of 5 DNG images spaced 2 stops
> apart, captured by an Insta360 One X2. The camera was on a tripod,
> and operated by a remote shutter.
>
> We are seeing some weird artifacts in the output panos. The colors
> look really odd (color chart, chair texture, in general they look
> faded). We are also seeing ringing and halos around color chart
> squares, light sources, and text. I've attached 2 sample screenshots
> - in one the halo-ing is very obvious, and the bottom row of the
> color chart should have the squares in decreasing order of
> brightness from white to black, but this is not the case.
>
> I placed a full set of samples in this Drive folder
> <https://drive.google.com/drive/folders/1VnQ1fLNCM7xdHAI7szqEOWKHKJ0VfWLv?usp=sharing>,
> You received this message because you are subscribed to the Google
> Groups "PTGui Support" group.
> To unsubscribe from this group and stop receiving emails from it, send
> an email to ptgui+un...@googlegroups.com
> <mailto:ptgui+un...@googlegroups.com>.
> To view this discussion on the web visit
> https://groups.google.com/d/msgid/ptgui/33ff6437-fbb6-477b-a07a-fe91c3d6259bn%40googlegroups.com
> <https://groups.google.com/d/msgid/ptgui/33ff6437-fbb6-477b-a07a-fe91c3d6259bn%40googlegroups.com?utm_medium=email&utm_source=footer>.
images' metadata. The ISO varies significantly between images (between
100 and 405). Ignoring this (like PTGui currently does) will cause the
hdr merge to go wrong.
I've attached a project file where the ISO values have been filled in in
the Image Parameters tab, this looks good to me.
I'll investigate why the ISO values are not picked up, this might be a
bug in PTGui.
Kind regards,
Joost Nieuwenhuijse
www.ptgui.com
On 09/09/2022 21:42, John Houghton wrote:
> Kira, Try converting the dng files to tiff. I did this and made no
> other changes to your project file and got the attached screenshot of
> the Panorama Editor window.
>
> John
>
> On Friday, September 9, 2022 at 2:45:04 PM UTC+1 kmat...@google.com wrote:
>
> I am generating panos from sets of 5 DNG images spaced 2 stops
> apart, captured by an Insta360 One X2. The camera was on a tripod,
> and operated by a remote shutter.
>
> We are seeing some weird artifacts in the output panos. The colors
> look really odd (color chart, chair texture, in general they look
> faded). We are also seeing ringing and halos around color chart
> squares, light sources, and text. I've attached 2 sample screenshots
> - in one the halo-ing is very obvious, and the bottom row of the
> color chart should have the squares in decreasing order of
> brightness from white to black, but this is not the case.
>
> I placed a full set of samples in this Drive folder
> including project file, source images, and resulting pano.
>
> I have exposure compensation and tone mapping off as we're using
> these for relighting. Is there something I'm missing?
>
>
> --
>
> I have exposure compensation and tone mapping off as we're using
> these for relighting. Is there something I'm missing?
>
>
> You received this message because you are subscribed to the Google
> Groups "PTGui Support" group.
> To unsubscribe from this group and stop receiving emails from it, send
> an email to ptgui+un...@googlegroups.com
> <mailto:ptgui+un...@googlegroups.com>.
> To view this discussion on the web visit
> https://groups.google.com/d/msgid/ptgui/33ff6437-fbb6-477b-a07a-fe91c3d6259bn%40googlegroups.com
> <https://groups.google.com/d/msgid/ptgui/33ff6437-fbb6-477b-a07a-fe91c3d6259bn%40googlegroups.com?utm_medium=email&utm_source=footer>.
Kira Prabhu
Sep 12, 2022, 11:30:50 AM9/12/22
to pt...@googlegroups.com
Thank you both for digging into this! I'll stay tuned for any updates on why the ISO isn't getting picked up.
In the meantime, the tiff conversion does seem to work, and I see the ISO populated for all images in the Image Parameters tab.
Is there a way to manually populate the ISO for the DNG files? I see them in the fixed.pts file but don't see how to do that myself if I start a new project.
Thanks!
Kira
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PTGui Support
Sep 12, 2022, 11:37:24 AM9/12/22
to pt...@googlegroups.com
Hi Kira,
Just go to the Image Parameters tab. Click the little triangle, so the
bracketed images are no longer collapsed. Now you can click in the ISO
field and edit the value.
The values shown here are what's used by PTGui. They are taken from the
EXIF data but you can override them.
> > <mailto:ptgui+un...@googlegroups.com
> <mailto:ptgui%2Bunsu...@googlegroups.com>>.
> <https://groups.google.com/d/msgid/ptgui/1c94f1dc-c2fb-254a-7fab-b0d04df41d50%40ptgui.com>.
>
> --
> <https://groups.google.com/d/msgid/ptgui/CAEL3WwVkjqtmEH9q_RSeedaCn-eC%3DZzEQfxUgHGpBU8NJ%2Byfsg%40mail.gmail.com?utm_medium=email&utm_source=footer>.
Just go to the Image Parameters tab. Click the little triangle, so the
bracketed images are no longer collapsed. Now you can click in the ISO
field and edit the value.
The values shown here are what's used by PTGui. They are taken from the
EXIF data but you can override them.
On 12/09/2022 17:30, 'Kira Prabhu' via PTGui Support wrote:
> Thank you both for digging into this! I'll stay tuned for any updates on
> why the ISO isn't getting picked up.
>
> In the meantime, the tiff conversion does seem to work, and I see the
> ISO populated for all images in the Image Parameters tab.
>
> Is there a way to manually populate the ISO for the DNG files? I see
> them in the fixed.pts file but don't see how to do that myself if I
> start a new project.
>
> Thanks!
> Kira
>
>
> On Fri, Sep 9, 2022 at 11:52 PM 'PTGui Support' via PTGui Support
> <pt...@googlegroups.com <mailto:pt...@googlegroups.com>> wrote:
>
> The problem seems to be that PTGui didn't pick up the ISO speed from
> the
> images' metadata. The ISO varies significantly between images (between
> 100 and 405). Ignoring this (like PTGui currently does) will cause the
> hdr merge to go wrong.
>
> I've attached a project file where the ISO values have been filled
> in in
> the Image Parameters tab, this looks good to me.
>
> I'll investigate why the ISO values are not picked up, this might be a
> bug in PTGui.
>
> Kind regards,
>
> Joost Nieuwenhuijse
> www.ptgui.com <http://www.ptgui.com>
> Thank you both for digging into this! I'll stay tuned for any updates on
> why the ISO isn't getting picked up.
>
> In the meantime, the tiff conversion does seem to work, and I see the
> ISO populated for all images in the Image Parameters tab.
>
> Is there a way to manually populate the ISO for the DNG files? I see
> them in the fixed.pts file but don't see how to do that myself if I
> start a new project.
>
> Thanks!
> Kira
>
>
> On Fri, Sep 9, 2022 at 11:52 PM 'PTGui Support' via PTGui Support
> <pt...@googlegroups.com <mailto:pt...@googlegroups.com>> wrote:
>
> The problem seems to be that PTGui didn't pick up the ISO speed from
> the
> images' metadata. The ISO varies significantly between images (between
> 100 and 405). Ignoring this (like PTGui currently does) will cause the
> hdr merge to go wrong.
>
> I've attached a project file where the ISO values have been filled
> in in
> the Image Parameters tab, this looks good to me.
>
> I'll investigate why the ISO values are not picked up, this might be a
> bug in PTGui.
>
> Kind regards,
>
> Joost Nieuwenhuijse
>
> On 09/09/2022 21:42, John Houghton wrote:
> > Kira, Try converting the dng files to tiff. I did this and made no
> > other changes to your project file and got the attached
> screenshot of
> > the Panorama Editor window.
> >
> > John
> >
> > On Friday, September 9, 2022 at 2:45:04 PM UTC+1
> On 09/09/2022 21:42, John Houghton wrote:
> > Kira, Try converting the dng files to tiff. I did this and made no
> > other changes to your project file and got the attached
> screenshot of
> > the Panorama Editor window.
> >
> > John
> >
> > On Friday, September 9, 2022 at 2:45:04 PM UTC+1
> kmat...@google.com <mailto:kmat...@google.com> wrote:
> >
> > I am generating panos from sets of 5 DNG images spaced 2 stops
> > apart, captured by an Insta360 One X2. The camera was on a
> tripod,
> > and operated by a remote shutter.
> >
> > We are seeing some weird artifacts in the output panos. The
> colors
> > look really odd (color chart, chair texture, in general they look
> > faded). We are also seeing ringing and halos around color chart
> > squares, light sources, and text. I've attached 2 sample
> screenshots
> > - in one the halo-ing is very obvious, and the bottom row of the
> > color chart should have the squares in decreasing order of
> > brightness from white to black, but this is not the case.
> >
> > I placed a full set of samples in this Drive folder
> >
> <https://drive.google.com/drive/folders/1VnQ1fLNCM7xdHAI7szqEOWKHKJ0VfWLv?usp=sharing <https://drive.google.com/drive/folders/1VnQ1fLNCM7xdHAI7szqEOWKHKJ0VfWLv?usp=sharing>>,
> >
> > I am generating panos from sets of 5 DNG images spaced 2 stops
> > apart, captured by an Insta360 One X2. The camera was on a
> tripod,
> > and operated by a remote shutter.
> >
> > We are seeing some weird artifacts in the output panos. The
> colors
> > look really odd (color chart, chair texture, in general they look
> > faded). We are also seeing ringing and halos around color chart
> > squares, light sources, and text. I've attached 2 sample
> screenshots
> > - in one the halo-ing is very obvious, and the bottom row of the
> > color chart should have the squares in decreasing order of
> > brightness from white to black, but this is not the case.
> >
> > I placed a full set of samples in this Drive folder
> >
> > including project file, source images, and resulting pano.
> >
> > I have exposure compensation and tone mapping off as we're using
> > these for relighting. Is there something I'm missing?
> >
> >
> > --
> > You received this message because you are subscribed to the Google
> > Groups "PTGui Support" group.
> > To unsubscribe from this group and stop receiving emails from it,
> send
> > an email to ptgui+un...@googlegroups.com
> <mailto:ptgui%2Bunsu...@googlegroups.com>
> >
> > I have exposure compensation and tone mapping off as we're using
> > these for relighting. Is there something I'm missing?
> >
> >
> > --
> > You received this message because you are subscribed to the Google
> > Groups "PTGui Support" group.
> > To unsubscribe from this group and stop receiving emails from it,
> send
> > an email to ptgui+un...@googlegroups.com
> > <mailto:ptgui+un...@googlegroups.com
> <mailto:ptgui%2Bunsu...@googlegroups.com>>.
> > To view this discussion on the web visit
> >
> https://groups.google.com/d/msgid/ptgui/33ff6437-fbb6-477b-a07a-fe91c3d6259bn%40googlegroups.com
> <https://groups.google.com/d/msgid/ptgui/33ff6437-fbb6-477b-a07a-fe91c3d6259bn%40googlegroups.com>
>
> >
> <https://groups.google.com/d/msgid/ptgui/33ff6437-fbb6-477b-a07a-fe91c3d6259bn%40googlegroups.com?utm_medium=email&utm_source=footer
> >
> https://groups.google.com/d/msgid/ptgui/33ff6437-fbb6-477b-a07a-fe91c3d6259bn%40googlegroups.com
> <https://groups.google.com/d/msgid/ptgui/33ff6437-fbb6-477b-a07a-fe91c3d6259bn%40googlegroups.com>
>
> >
> <https://groups.google.com/d/msgid/ptgui/33ff6437-fbb6-477b-a07a-fe91c3d6259bn%40googlegroups.com?utm_medium=email&utm_source=footer>>.
>
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Kira Prabhu
Sep 12, 2022, 12:46:10 PM9/12/22
to pt...@googlegroups.com
Got it, thanks! I had clicked, but not double-clicked on the ISO box.
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