nanog mailing list archives
Re: AOL web troubles.. New AOL speedup seems to be a slowdown
From: "Brian Bruns" <bruns () 2mbit com>
Date: Fri, 30 Jan 2004 16:13:15 -0500
On Friday, January 30, 2004 2:20 PM [GMT-5=EST], JC Dill <nanog () vo cnchost com> wrote:
At 09:43 PM 1/29/2004, "Brian Bruns" <bruns () 2mbit com> wrote:Properly implemented watermarking won't be affected by the recompression. It may not be as clear to the program as it would be if it was in its old format, but its still legible.That's *visible* watermarking, not invisible *digital* watermarking which is hidden in the image file and marks the image as the property of the copyright owner. If AOL's recompression technique is stripping out the digital watermark (can anyone here verify this?), then: AOL is copying and redistributing the image in a new format *without the permission of the copyright holder* in a way that A) makes AOL money and B) removes protections that the copyright holder had placed on the image to help keep third parties from reproducing the image without permission. and in doing so: IMHO they are infringing on the copyright of those who have placed the digital watermark in the image. jc
As far as I know, they don't tamper with digital watermarks. Frankly, unless you know the program that created them, its very hard to figure out where a digital watermark is, as they are designed to be completely transparent and invisible to pretty much everything but the identifying program. If they were visible, it would be simple enough to strip it out and take the image. Visible watermarking shouldn't be too badly affected by the compression either - I guess I could throw up some of my samples if people here would be interested in the difference in quality between normal images, AOL ART compressed images, etc so you can get an idea if you dont already know what we are talking about. The most common side affect of the AOL ART compression is color banding - where smooth gradients are turned into color streaks of solid colors. The other thing is loss of detail on areas where color is very similar (ie: skin tones). -- Brian Bruns The Summit Open Source Development Group Open Solutions For A Closed World / Anti-Spam Resources http://www.sosdg.org The AHBL - http://www.ahbl.org
Current thread:
- Re: AOL web troubles.. New AOL speedup seems to be a slowdown, (continued)
- Re: AOL web troubles.. New AOL speedup seems to be a slowdown Kevin Loch (Jan 29)
- Re: AOL web troubles.. New AOL speedup seems to be a slowdown Stephen Sprunk (Jan 29)
- Re: AOL web troubles.. New AOL speedup seems to be a slowdown Daniel Senie (Jan 29)
- Re: AOL web troubles.. New AOL speedup seems to be a slowdown Nicole (Jan 30)
- Re: AOL web troubles.. New AOL speedup seems to be a slowdown Stephen Sprunk (Jan 29)
- Re: AOL web troubles.. New AOL speedup seems to be a slowdown Brian Bruns (Jan 29)
- RE: AOL web troubles.. New AOL speedup seems to be a slowdown Benjamin Chase (Jan 29)
- RE: AOL web troubles.. New AOL speedup seems to be a slowdown Chris Parker (Jan 29)
- RE: AOL web troubles.. New AOL speedup seems to be a slowdown Benjamin Chase (Jan 29)
- Re: AOL web troubles.. New AOL speedup seems to be a slowdown Brian Bruns (Jan 29)
- Re: AOL web troubles.. New AOL speedup seems to be a slowdown JC Dill (Jan 30)
- Re: AOL web troubles.. New AOL speedup seems to be a slowdown Brian Bruns (Jan 30)
- Re: AOL web troubles.. New AOL speedup seems to be a slowdown Kevin Loch (Jan 29)
- Re: AOL web troubles.. New AOL speedup seems to be a slowdown Stephen J. Wilcox (Jan 31)
- Re: AOL web troubles.. New AOL speedup seems to be a slowdown The Gunn (Jan 31)