Creating "real" thumbnails w/ compression control

[Sannyasin Sivakatirswami]

I followed the recent thread on making thumbnails, but still have a 
basic question. Of course, it possible to import a large digital JPEG 
image (typically taken by a digital camera, 20 X 14 at 100 DPI or 
something like that), and assign that image to a small rect that is 
locked and thus it appears as a thumbnail. The questions are

1) How does one go about actually making a thumbnail of the large image 
that resides on disk, but, in Revolution the amount of image data for 
the thumbnail is just that, the necessary data to show a thumbnail.. 
let's say 1 inch tall by 2 inches wide, for discussion purposes... at 
72 DPI. So that when you export that thumbnail back to the hard drive 
you end up with a tiny 20K thumbnail image of the large image?

2) Can we import a JPEG and then export that big file back to a smaller 
file and a specific smaller size and compression. e.g. we bring in the 
file and save it out as a 3X5 image at 72 DPI at compression "medium" 
or 40.

Of course we have lots of external tools for this, but each one has 
limitations. ImageReady is not a cataloging interface. iView is great, 
but has no easy export feature and the thumbnails are "locked" into the 
catalog itself.  What I am looking for is an application independent 
work flow, where the original image, the resized image for web use and 
a thumbnail of that end up as files  on the hard drive, that cane 
process a single image in one go.


Sannyasin Sivakatirswami
Himalayan Academy Publications
at Kauai's Hindu Monastery
katir at hindu.org

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