Groups | Search | Server Info | Keyboard shortcuts | Login | Register [http] [https] [nntp] [nntps]
Groups > sci.electronics.design > #449736
| Subject | Re: AoE X-Chapters? |
|---|---|
| Newsgroups | sci.electronics.design |
| References | (3 earlier) <58b4d8c8$0$60180$c3e8da3$66d3cc2f@news.astraweb.com> <FKdtA.594627$fg7.353321@fx08.fr7> <58b5f583$0$32677$b1db1813$19ace300@news.astraweb.com> <nQAtA.2$dg3.0@fx37.am4> <addfc51e-3789-82a7-df7a-65f9618f1065@electrooptical.net> |
| From | Tom Gardner <spamjunk@blueyonder.co.uk> |
| Message-ID | <zKCtA.7$a45.2@fx29.am4> (permalink) |
| Organization | virginmedia.com |
| Date | 2017-03-01 16:34 +0000 |
On 01/03/17 15:50, Phil Hobbs wrote: > There are steganographic methods that survive converting to 1-bit > monochrome, cropping, and stretching. The ones I know about encode the > message in the low spatial frequencies of an image. The work was done > by some IBM colleagues of mine around 2000. In 1999 I saw a watermark added to a professional quality jpeg photo. Then the image was shrunk and the quality reduced, then printed on an inkjet printer and scanned. The watermark survived. But watermarking etc is pretty much irrelevant unless there are effective sanctions against copying and/or distributing. In most cases, there aren't. It is another variant of the old axiom "if you think cryptography will solve your problem, then you don't understand cryptography and you don't understand your problem".
Back to sci.electronics.design | Previous | Next — Previous in thread | Next in thread | Find similar | Unroll thread
OT: Art of Electronics, 3rd ed, for $59.96 Winfield Hill <hill@rowland.harvard.edu> - 2017-02-03 11:35 -0800
Re: OT: Art of Electronics, 3rd ed, for $59.96 boB <boB@theresnoplacelikehome.com> - 2017-02-03 14:17 -0800
Re: OT: Art of Electronics, 3rd ed, for $59.96 bitrex <bitrex@de.lete.earthlink.net> - 2017-02-03 18:35 -0500
Re: OT: Art of Electronics, 3rd ed, for $59.96 Winfield Hill <hill@rowland.harvard.edu> - 2017-02-03 17:20 -0800
Re: OT: Art of Electronics, 3rd ed, for $59.96 Pimpom <Pimpom@invalid.com> - 2017-02-04 15:38 +0530
Re: OT: Art of Electronics, 3rd ed, for $59.96 Winfield Hill <hill@rowland.harvard.edu> - 2017-02-04 04:39 -0800
Re: Art of Electronics, 3rd ed, for $59.96 "Tom Del Rosso" <fizzbintuesday@that-google-mail-domain.com> - 2017-02-04 10:02 -0500
Re: Art of Electronics, 3rd ed, for $59.96 Frnak McKenney <frnak@far.from.the.madding.crowd.com> - 2017-02-18 22:22 -0600
Re: Art of Electronics, 3rd ed, for $59.96 John Larkin <jjlarkin@highlandtechnology.com> - 2017-02-18 20:25 -0800
Re: Art of Electronics, 3rd ed, for $59.96 Joerg <news@analogconsultants.com> - 2017-02-28 16:19 -0800
Re: Art of Electronics, 3rd ed, for $59.96 "Tom Del Rosso" <fizzbintuesday@that-google-mail-domain.com> - 2017-03-01 05:53 -0500
Re: Art of Electronics, 3rd ed, for $59.96 Joerg <news@analogconsultants.com> - 2017-03-01 07:16 -0800
Re: OT: Art of Electronics, 3rd ed, for $59.96 amdx <nojunk@knology.net> - 2017-02-25 18:59 -0600
AoE X-Chapters? Michael Elwood <mkelwoodut@gmail.com> - 2017-02-27 15:39 -0800
Re: AoE X-Chapters? Winfield Hill <hill@rowland.harvard.edu> - 2017-02-27 17:11 -0800
Re: AoE X-Chapters? Tom Gardner <spamjunk@blueyonder.co.uk> - 2017-02-28 01:20 +0000
Re: AoE X-Chapters? Phil Hobbs <pcdhSpamMeSenseless@electrooptical.net> - 2017-02-28 10:10 -0500
Re: AoE X-Chapters? Clifford Heath <no.spam@please.net> - 2017-02-28 12:57 +1100
Re: AoE X-Chapters? Winfield Hill <hill@rowland.harvard.edu> - 2017-02-28 03:10 -0800
Re: AoE X-Chapters? Tom Gardner <spamjunk@blueyonder.co.uk> - 2017-02-28 11:39 +0000
Re: AoE X-Chapters? Chris Jones <lugnut808@spam.yahoo.com> - 2017-02-28 23:08 +1100
Re: AoE X-Chapters? Clifford Heath <no.spam@please.net> - 2017-03-01 09:11 +1100
Re: AoE X-Chapters? Chris Jones <lugnut808@spam.yahoo.com> - 2017-03-02 01:24 +1100
Re: AoE X-Chapters? Phil Hobbs <pcdhSpamMeSenseless@electrooptical.net> - 2017-03-01 10:50 -0500
Re: AoE X-Chapters? Tom Gardner <spamjunk@blueyonder.co.uk> - 2017-03-01 16:34 +0000
Re: AoE X-Chapters? John Larkin <jjlarkin@highlandtechnology.com> - 2017-03-01 08:58 -0800
Re: AoE X-Chapters? Phil Hobbs <pcdhSpamMeSenseless@electrooptical.net> - 2017-03-01 12:43 -0500
Re: AoE X-Chapters? Phil Hobbs <pcdhSpamMeSenseless@electrooptical.net> - 2017-02-28 10:11 -0500
Re: AoE X-Chapters? Neon John <no@never.com> - 2017-02-28 12:11 -0500
Re: AoE X-Chapters? Spehro Pefhany <speffSNIP@interlogDOTyou.knowwhat> - 2017-02-28 18:36 -0500
Re: AoE X-Chapters? Clifford Heath <no.spam@please.net> - 2017-03-01 12:40 +1100
Re: AoE X-Chapters? George Herold <gherold@teachspin.com> - 2017-02-28 17:44 -0800
Re: AoE X-Chapters? Winfield Hill <hill@rowland.harvard.edu> - 2017-02-28 18:22 -0800
Re: AoE X-Chapters? pcdhobbs@gmail.com - 2017-02-28 18:28 -0800
Re: AoE X-Chapters? Winfield Hill <hill@rowland.harvard.edu> - 2017-02-28 19:10 -0800
Re: AoE X-Chapters? pcdhobbs@gmail.com - 2017-03-01 06:08 -0800
Re: AoE X-Chapters? pcdhobbs@gmail.com - 2017-02-28 18:28 -0800
Re: AoE X-Chapters? George Herold <gherold@teachspin.com> - 2017-02-27 18:25 -0800
Re: AoE X-Chapters? George Herold <gherold@teachspin.com> - 2017-02-27 18:28 -0800
Re: AoE X-Chapters? Neon John <no@never.com> - 2017-02-28 12:06 -0500
Re: OT: Art of Electronics, 3rd ed, for $59.96 gyansorova@gmail.com - 2017-03-05 12:37 -0800
Re: OT: Art of Electronics, 3rd ed, for $59.96 Winfield Hill <hill@rowland.harvard.edu> - 2017-03-05 12:51 -0800
Re: OT: Art of Electronics, 3rd ed, for $59.96 John Larkin <jjlarkin@highlandtechnology.com> - 2017-03-05 13:47 -0800
Re: OT: Art of Electronics, 3rd ed, for $59.96 George Herold <gherold@teachspin.com> - 2017-03-05 18:23 -0800
Re: OT: Art of Electronics, 3rd ed, for $59.96 John Larkin <jjlarkin@highlandtechnology.com> - 2017-03-05 18:37 -0800
Re: OT: Art of Electronics, 3rd ed, for $59.96 pcdhobbs@gmail.com - 2017-03-06 05:17 -0800
csiph-web