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Subject Topic: why forced compression? Post Reply Post New Topic
Message posted by PhotoBill on March-05-2005 at 10:46am
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After bringing in 2 hemi TIF's at 23.5 megs each and stitching the pano, when I go to save as panoramic image at JPEG quality 100% the stitch file goes from 3.73 megs to 569KB. Other software packages do the same but Panoweaver seems to reduce this more.
I would like to be able to save these panos at a much higher resoltion so as to edit in PS and to publish higher quality panos.
Any suggestions?
Thanks
Bill

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CircularWorlds.com
"turning your head with panoramic photography"

Message posted by RotoPix on March-05-2005 at 10:55am
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I typically save the panos as BMP files, then open them in PhotoShop for enhancement, then "Save For Web" in PS as JPEGs at whatever compression ratio I need.

Message posted by PhotoBill on March-05-2005 at 11:32am
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Thx for the quick reply RotoPix -
Tried that - don't really see an image improvement by converting to BMP.
Trying to achive the same image quailty as the orginal panos.
I'll play with it some more.......

thx

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CircularWorlds.com
"turning your head with panoramic photography"

Message posted by spinem on March-05-2005 at 12:52pm
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Quote: Originally posted by PhotoBill on March-05-2005
Thx for the quick reply RotoPix -
Tried that - don't really see an image improvement by converting to BMP.
Trying to achive the same image quailty as the orginal panos.
I'll play with it some more.......

thx



hey...
I was looking at you're site. You mentioned there that u can publish VR in ipix format....
Do you have ipix Interactive Studio? or is it possible to do it in some other way?

Message posted by PhotoBill on March-05-2005 at 2:23pm
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I have the Pix Interactive Studio - garbage really - too generic, not enough manual control and I certainly wouldn't recommend to anyone (pros or amatuers) ......and I don't think you can publish .ipx with another peace of software. I use it for real estate agencies that don't know any better and are used to working with it.
Sorry iPix for the slam - just my opinion.

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CircularWorlds.com
"turning your head with panoramic photography"

Message posted by phoenixrising on March-07-2005 at 3:22am
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Hiya... what cam are u using to bring in hemi tifs?? My workflow has alwys been to blend my fine res jpg hemis first (for over and under exposed areas) save these as BMP's and stich. Save the image as BMP and then do PS work. Last step will be to size image to final required display size, unsharpen image and then save as jpg and publish. This is due to the fact that jpy is compressed image which will recompress each time u open and save it = pixel displacement and loss of image sharpness.

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If I only had an hour to chop down a tree... I'd spend 45 mins sharpening the axe.

Message posted by PhotoBill on March-07-2005 at 9:10am
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using the coolpix 8800 with fc-e9 fisheye lens. Tried your method and still lossing something if not my head.



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CircularWorlds.com
"turning your head with panoramic photography"

Message posted by phoenixrising on March-07-2005 at 9:29am
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Hhmm...

matter of interest, when stiching... are you selecting stiched output size???

You'll see that you can select the image size on the right hand side. Easypano will allow files up to 2500x5000 pixels.

When I take 3 shot images (jpg fine) for a tour my initial jpg's will be approx 1MB in size. When the hemis are blended and saved as bmp they'll be 9MB each (image size 1535x2048px) I'll then stich to 1500x3000 which in effect makes the images smaller then I could (here the max size being 2000x4000) to around 12mb. If I were to stich to 2000x4000 I'd have around 23mb in file size.

I have a feeling ur output file size is a tad small... hhmmm?? 



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If I only had an hour to chop down a tree... I'd spend 45 mins sharpening the axe.

Message posted by smooth on March-07-2005 at 1:07pm
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The job of Panoweaver is to do the stitch.

Once done you save the stitched images in a non lossy format. (I do not use Panoweaver to compress the image) This is left to Photoshop.

If you must use Panoweaver to give you an output file simply replace the "panorama image" with the correctly compressed and edited file you have saved from Photoshop.

HUGE files don't necessarily produce a clearer image. 4000 x 2000 is enough for fullscreen viewing.

Regards, Smooth


Message posted by PhotoBill on March-07-2005 at 7:27pm
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Quote: Originally posted by smooth on March-07-2005

The job of Panoweaver is to do the stitch.

Once done you save the stitched images in a non lossy format. (I do not use Panoweaver to compress the image) This is left to Photoshop.

If you must use Panoweaver to give you an output file simply replace the "panorama image" with the correctly compressed and edited file you have saved from Photoshop.

HUGE files don't necessarily produce a clearer image. 4000 x 2000 is enough for fullscreen viewing.

Regards, Smooth



got it worked work - thx smooth

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CircularWorlds.com
"turning your head with panoramic photography"

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