[HDR-photo] Why does the preview look better than the final output image?

[Bob Wise]

Some other 64bit OS then?

On Mar 27, 2007, at 9:55 AM, <keith.henson21 at ntlworld.com> wrote:

>
>> no Vista
>
> 8gb of memory Dual Processing but I've had it crash with an Error  
> twice in the last ten minutes too.
>> From: Bob Wise <bob at bobsplanet.com>
>> Date: 2007/03/27 Tue PM 04:04:48 GMT
>> To: High Dynamic Range Photography <hdr-photo at hdr-photography.com>
>> Subject: Re: [HDR-photo] Why does the preview look better than the
>> 	final	output image?
>>
>>
>> I haven't had a crash. I'm running WinXP SP2 on a dual-core conroe w/
>> 2gb main memory. You?
>> Not using Vista are you? :-)
>>
>> -Bob
>>
>> On Mar 27, 2007, at 8:04 AM, <keith.henson21 at ntlworld.com>
>> <keith.henson21 at ntlworld.com> wrote:
>>
>>> Hi guys,
>>>
>>> I've been putting 2.4 through some serious work over the last few
>>> days and when it's doing the job it's great, but it seems a bit
>>> 'buggy' and crashes on a regular basis.
>>>
>>> Has anybody else noticed this?
>>>
>>> Keith
>>> www.northscape.co.uk
>>>>
>>>> From: "Geraldine Joffre" <hdr-photo at hdrsoft.com>
>>>> Date: 2007/03/27 Tue AM 09:36:13 GMT
>>>> To: High Dynamic Range Photography <hdr-photo at hdr-photography.com>
>>>> Subject: Re: [HDR-photo] Why does the preview look better than the
>>>> final
>>>> 	output image?
>>>>
>>>> On Mon, 26 Mar 2007 17:02:24 -0700, Bob Wise wrote
>>>>> Perhaps a silly question... can the software not provide the  
>>>>> preview
>>>>>  algorithm as an option for image processing?
>>>> The preview algorithm is already used for the final result. The
>>>> difference is
>>>> not in the algorithm but in the size of the image to which the
>>>> algorithm is
>>>> applied. If you resize your HDR image to the size of the preview,
>>>> then the
>>>> final output will be exactly the same as with the preview.
>>>>
>>>> Actually, in case you get a large difference with the preview,
>>>> with the final
>>>> result being very dark, resizing the image only slightly may be
>>>> sufficient. In
>>>> this case, the dark final result is because the HDR image includes
>>>> too many
>>>> abnormally low values which confuse the Details Enhancer
>>>> algorithm. But if you
>>>> resize the HDR image, the interpolation done for resizing should
>>>> smooth out
>>>> the outliers low values, and the algorithm should then work  
>>>> normally.
>>>>
>>>> Geraldine Joffre
>>>>
>>>> _______________________________________________
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>>>> http://www.hdr-photography.com/mailman/listinfo/hdr-photo
>>>>
>>>
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>
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