[Hdri] Missed postings...

[Greg Ward]

My last two messages to the list only went to the posters, as I  
hadn't set it up to automatically send responses to the list.

I have now done so, more for consistency with radiance-general than  
anything else.  You now need not use the "reply all" button to get  
your post to the list.  If you wish to reply to the poster privately,  
you will have to start a separate message, as you now do on radiance- 
general.

-Greg

Begin forwarded message:

> From: Greg Ward <gregoryjward at gmail.com>
> Date: January 17, 2006 8:47:33 AM PST
> To: Martin Moeck <MMoeck at engr.psu.edu>
> Subject: Re: [Hdri] correction for barrel distortion
>
> Hi Martin,
>
> Our first real post...
>
> If you have Photoshop, you can apply a lens distortion filter to  
> each 8-bit input image (saving and reusing the same filter) prior  
> to combining them.  The filter doesn't work on HDR images, even in  
> CS2, unfortunately.
>
> Some high-end cameras also come with distortion correction  
> software, which you can apply in the same way as long as you're  
> consistent.
>
> Let me know if it works.
> -Greg
>
>> From: "Martin Moeck" <MMoeck at engr.psu.edu>
>> Date: January 17, 2006 7:11:08 AM PST
>>
>> Assume you have a barrel distortion image like the one shown at
>>
>> http://www.dcresource.com/reviews/nikon/coolpix5400-review/
>>
>> towards the bottom of the page.
>>
>> 1) Are there software tools or algorithms available to correct  
>> these images before they are converted into an HDR image?
>>
>> 2) If not, is there a simple way to correct the HDR image for  
>> barrel distortion?
>>
>> Martin Moeck
>>

Begin forwarded message:

> From: Greg Ward <gregoryjward at gmail.com>
> Date: January 17, 2006 11:38:36 AM PST
> To: "Fitzsimmons, Rob" <rob.fitzsimmons at Summit.Fiserv.com>
> Subject: Re: [Hdri] correction for barrel distortion
>
> Photoshop CS2 is pretty good about preserving the Exif header  
> information, though I don't know for certain in this case.  You can  
> always override it in Photosphere using the Set->Other->Field...  
> menu, or with the hdrgen -s option.
>
> This is my second attempt to post -- I seem to be blocked for the  
> moment, and I'm the moderator!
>
> -Greg
>
>> From: "Fitzsimmons, Rob" <rob.fitzsimmons at Summit.Fiserv.com>
>> Date: January 17, 2006 10:38:27 AM PST
>>
>> I could be wrong, but don't HDR creators need the original camera  
>> shot with exif information? Doing Photoshop adjustments would lose  
>> that info. I'm pretty sure Photosphere needs this, but I don't  
>> know if HDRShop does.
>>
>> Rob F
>>