OK... I learned a little more about jpeg compression working on pixel
brightness in 8 * 8 blocks as opposed to color compression, but of course
that doesn't help reduce the file size.
Tom C.
From: "Tom C" <[EMAIL PROTECTED]>
Reply-To: [EMAIL PROTECTED]
To: [EMAIL PROTECTED]
Subject: JPEG Compression Limits
Date: Tue, 20 Jul 2004 21:47:17 -0600
I've been trying to get my PUG entry finished and when getting to the last
step of saving it as a .jpg, the smallest I can compress the file is 102K,
at Photoshop quality level of zero. This is for an image that is 600 * 394
pixels, resampled at 72 ppi. There is noticieable degradation in the
image.
The smallest I can compress the image at it's physical pixel size, and
still get reasonably good results yields a filesize of 134K at Photoshop
quality level 3.
Any suggestions or have I simply hit the compression wall? The image is a
silohuetted trees with fairly open branches and therefore, I assume, has
quite a bit of image info compared to shots that may have large contiguous
blocks of color (assuming again I have an inkling of how jpeg compression
works).
Tom C.
