How to eliminate black bars due to limited vertical FOV?

[robarama]

How to eliminate black bars due to limited vertical FOV?

by robarama » Sun Jan 12, 2014 6:02 pm

My flat panos are only one row of stitching so the vertical field of view is narrow. When I render them for 360 in PTP2, I get black (letterbox looking) bars on the top and bottom. See links below for the flat file and the PTP2 generated 360.

Thanks in advance to anyone who can help.

R

http://www.robertgranoff.com/test/SE_8t ... eters.html

http://www.robertgranoff.com/test/SE_8t ... ge.jpg.zip

[mediavets]

Re: How to eliminate black bars due to limited vertical FOV?

by mediavets » Sun Jan 12, 2014 6:12 pm

My flat panos are only one row of stitching so the vertical field of view is narrow. When I render them for 360 in PTP2, I get black (letterbox looking) bars on the top and bottom. See links below for the flat file and the PTP2 generated 360.

Thanks in advance to anyone who can help.

R

http://www.robertgranoff.com/test/SE_8t ... eters.html

http://www.robertgranoff.com/test/SE_8t ... ge.jpg.zip

Use the Crop tool (it performs a virtual crop) to limit the pano FOV when tour is viewed.

Attachments

[robarama]

Re: How to eliminate black bars due to limited vertical FOV?

by robarama » Sun Jan 12, 2014 7:25 pm

Thank you mediavets! That's a great simply fix! Another question if you don't mind:

This tour looks good on my desktop screen and is zoomable to resolution but when I view on my first generation iPad, it starts zoomed and it will not zoom in our out with a pinch. Do you happen to know a way around this is or is it just an iPad limitation?

http://www.robertgranoff.com/test/SE_8t ... ers_c.html

Thanks!

R

[mediavets]

Re: How to eliminate black bars due to limited vertical FOV?

by mediavets » Sun Jan 12, 2014 7:28 pm

Thank you mediavets! That's a great simply fix! Another question if you don't mind:

This tour looks good on my desktop screen and is zoomable to resolution but when I view on my first generation iPad, it starts zoomed and it will not zoom in our out with a pinch. Do you happen to know a way around this is or is it just an iPad limitation?

http://www.robertgranoff.com/test/SE_8t ... ers_c.html

Thanks!

R

If you are using PTP RC1 then in theory multi-resolution support is also available for mobile platforms (multi-res. on mobile platforms was not available before RC1).

Whether that extends to first generation iPads I don't know...I don't have any iDevices.

[robarama]

Re: How to eliminate black bars due to limited vertical FOV?

by robarama » Sun Jan 12, 2014 8:11 pm

I'm using PTP2 with multires checked, what is PTP "RC1"?

[mediavets]

Re: How to eliminate black bars due to limited vertical FOV?

by mediavets » Sun Jan 12, 2014 8:28 pm

I'm using PTP2 with multires checked, what is PTP "RC1"?

The latest release - Release Candidate 1.

The prior Beta series don't support multi-res on mobile platforms.

[robarama]

Re: How to eliminate black bars due to limited vertical FOV?

by robarama » Sun Jan 12, 2014 8:31 pm

Yes, it appears that I am running RC 1 so perhaps my issue has something to do with the fact that I'm viewing on a first generation iPad. I need to find someone who has an iPad 2 or iPad mini to test. Thanks - R

[mediavets]

Re: How to eliminate black bars due to limited vertical FOV?

by mediavets » Sun Jan 12, 2014 8:45 pm

Yes, it appears that I am running RC 1 so perhaps my issue has something to do with the fact that I'm viewing on a first generation iPad. I need to find someone who has an iPad 2 or iPad mini to test. Thanks - R

If you first created the tour with a Beta version, then you need to Rebuild all tiles in RC1, because the default tile size has changed (it is now a fixed value of 512 in RC1).

If your iPad supports iOS 5.1 then multires should work:

http://krpano.com/html5multires/

"iOS (iPhone, iPad, iPod Touch) - All iOS devices with iOS 5.1 or higher."

Attachments

[robarama]

Re: How to eliminate black bars due to limited vertical FOV?

by robarama » Sun Jan 12, 2014 8:50 pm

The file was created using the most current version of Autopano 3 but I did not have rebuild all tiles checked in PTP2. However I did have multi res and incremental build checked.

[mediavets]

Re: How to eliminate black bars due to limited vertical FOV?

by mediavets » Sun Jan 12, 2014 8:59 pm

The file was created using the most current version of Autopano 3

The version of APP/APG used to create the input pano file(s) is irrelevant.

Do you input images all have a HFOV of 360 degrees?

What important here is the version of PT/PTOP you used to create and build the tour (you need to be using RC1) and whether your iPad is running iOS 5.1 or higher.

but I did not have rebuild all tiles checked in PTP2. However I did have multi res and incremental build checked.

Try a rebuild into new folder that way you'll get a 'clean' build.

[robarama]

Re: How to eliminate black bars due to limited vertical FOV?

by robarama » Sun Jan 12, 2014 9:03 pm

Yes everything was built with RC1 and all horizontal FOV's are 360 however, when I redo a file I've been deleting the old file in the output folder and then saving the new files into the same folder. So you're saying this could cause some problems?

[mediavets]

Re: How to eliminate black bars due to limited vertical FOV?

by mediavets » Sun Jan 12, 2014 9:09 pm

Yes everything was built with RC1 and all horizontal FOV's are 360 however, when I redo a file I've been deleting the old file in the output folder and then saving the new files into the same folder. So you're saying this could cause some problems?

I don't know...what I do know is that building to a new folder means you'll get a 'clean' build.

..........

Is your first generation iPad running iOS 5.1 or later.

If not multi-res will not work on it.

[robarama]

Re: How to eliminate black bars due to limited vertical FOV?

by robarama » Sun Jan 12, 2014 9:11 pm

looks like I'm running version 6.1.3

[mediavets]

Re: How to eliminate black bars due to limited vertical FOV?

by mediavets » Sun Jan 12, 2014 9:16 pm

looks like I'm running version 6.1.3

If so it probably isn't a first gen. iPad if this info is correct:
http://en.wikipedia.org/wiki/IPad_%28fi ... eration%29

"On June 11, 2012 it was announced that iOS 6 would not be released for the first generation iPad, hence making iOS 5.1.1 the final official operating system version available for the device."

[benji33]

Re: How to eliminate black bars due to limited vertical FOV?

by benji33 » Mon Jan 13, 2014 4:21 pm

Your export is mono resolution for devices and so the zoom is limited to image size which is fully displayed on screen. Tested on iPad mini.
RC1 offer multiresolution but only for full 360x180, not for partial panoramas as your's.

[mediavets]

Re: How to eliminate black bars due to limited vertical FOV?

by mediavets » Mon Jan 13, 2014 6:32 pm

Your export is mono resolution for devices and so the zoom is limited to image size which is fully displayed on screen. Tested on iPad mini.
RC1 offer multiresolution but only for full 360x180, not for partial panoramas as your's.

He said all his panos had a HFOV of 360 - is that insufficient?

Must they have a VFOV of 180 as well?

Is this in relation to HTML5 only or also for Flash?

For desktop or just for mobile?

[benji33]

Re: How to eliminate black bars due to limited vertical FOV?

by benji33 » Tue Jan 14, 2014 4:44 pm

He said all his panos had a HFOV of 360 - is that insufficient?

Must they have a VFOV of 180 as well?

Is this in relation to HTML5 only or also for Flash?

For desktop or just for mobile?

No a full 360x180.

HTML5 only yes (desktop + mobile). Flash is able to display multiresolution for a partial shere.

[mediavets]

Re: How to eliminate black bars due to limited vertical FOV?

by mediavets » Tue Jan 14, 2014 5:59 pm

He said all his panos had a HFOV of 360 - is that insufficient?

Must they have a VFOV of 180 as well?

Is this in relation to HTML5 only or also for Flash?

For desktop or just for mobile?

No a full 360x180.

HTML5 only yes (desktop + mobile). Flash is able to display multiresolution for a partial sphere.

Can we expect HTML5 multi-res. support for partial panos with spherical projection, and planar projection, at some point in the future?

Is the current limitation due to krpano HTML5 viewer or PTP?

[benji33]

Re: How to eliminate black bars due to limited vertical FOV?

by benji33 » Wed Jan 15, 2014 9:58 am

In fact HTML5 for partial already exists (in Panotour) but it has not been added yet due to the fact that unused tiles are generated. It can be more than one million of unused tiles into a big gigapixel file.

[mediavets]

Re: How to eliminate black bars due to limited vertical FOV?

by mediavets » Wed Jan 15, 2014 10:14 am

In fact HTML5 for partial already exists (in Panotour) but it has not been added yet due to the fact that unused tiles are generated. It can be more than one million of unused tiles into a big gigapixel file.

Why is that?

Is that because you convert it internally to an equirectangular image before generating the tiles?

[benji33]

Re: How to eliminate black bars due to limited vertical FOV?

by benji33 » Wed Jan 15, 2014 10:29 am

Exactly because HTML5 multi-res is generated into CUBE only (SPHERE is not available) with krpano player.