Groups | Search | Server Info | Keyboard shortcuts | Login | Register [http] [https] [nntp] [nntps]
Groups > linux.debian.user > #204007
| From | Gene Heskett <gheskett@shentel.net> |
|---|---|
| Newsgroups | linux.debian.user |
| Subject | Re: [OT] scanned files are large in size |
| Date | 2019-01-04 19:50 +0100 |
| Message-ID | <xcCHE-3Ir-15@gated-at.bofh.it> (permalink) |
| References | <xbwbf-3Xz-1@gated-at.bofh.it> <xc2kN-74w-5@gated-at.bofh.it> <xcBsf-32F-21@gated-at.bofh.it> |
| Organization | linux.* mail to news gateway |
On Friday 04 January 2019 12:26:07 Brian wrote: > On Wed 02 Jan 2019 at 22:56:22 -0500, kamaraju kusumanchi wrote: > > On Wed, Jan 2, 2019 at 9:23 PM David Wright <deblis@lionunicorn.co.uk> wrote: > > > On Wed 02 Jan 2019 at 14:44:14 (+0000), Brian wrote: > > > > I'm intrigued; I hadn't realised that conversion of the scanned > > > > image for some vendors' devices took place on the device itself. > > > > How do you know this happens? It is the frontend to SANE (xsane > > > > or scanimage, for example) which I've always associated with > > > > image aquisition conversion. > > > > > > It really is rather easy. You insert a USB stick into the scanner, > > > press scan, and later observe that a JPEG or PDF file has appeared > > > on the stick, as appropriate. > > > > Yes, that is precisely what I did. Stick a USB into the scanner and > > press the scan button. > > My HP Envy 4520 has no such button. There is an option for scanning to > the computer, but software is required on the computer to do that and > HPLIP does not provide it. > > Anyway, I managed to persuade the device to give me the PDF it would > have sent to a USB stick if the facility had existed (the device has > Apple's AirScan). If it matters, the PDF does not have any Creator or > Publisher information and doesn't contain any embedded or subset > fonts. > > Scanned at a resolution of 600: > > brian@desktop:~$ pdfimages -list out.pdf > page num type width height color comp bpc enc interp object ID > x-ppi y-ppi size ratio > ---------------------------------------------------------------------- >---------------------- 1 0 image 5100 6600 gray 1 8 jpeg > no 1 0 600 600 2090K 6.4% > > ps2pdf reduces the 2090K by about 50% to 1051K. > > A different scanner device and source document, of course, and maybe > different methods of PDF production, so I wouldn't read too much into > this. > > BTW (for completeness), what machine was scanned_in_office.pdf > produced on? If I take a screen snapshot that might be of interest to my bunch, I usually run it thru gimp, exporting it as a jpeg, increasing the compression until I start to see artifacts/errors in the preview image, then go back up in size till I can't see them anymore, then export to a more understandable english name. By this method I have pulled in an image from my camera that was a gigabyte+ when unpacked from its "jpeg" output, and smunched it down to 2 or 3 hundred kilobytes for sending over the net. And I'm still sending a far higher quality of image than I've ever received from a winders machine sending me 25k jpegs. The proper description of those when being kind is fugly. Cheers, Gene Heskett -- "There are four boxes to be used in defense of liberty: soap, ballot, jury, and ammo. Please use in that order." -Ed Howdershelt (Author) Genes Web page <http://geneslinuxbox.net:6309/gene>
Back to linux.debian.user | Previous | Next — Previous in thread | Next in thread | Find similar | Unroll thread
[OT] scanned files are large in size kamaraju kusumanchi <raju.mailinglists@gmail.com> - 2019-01-01 18:40 +0100
Re: [OT] scanned files are large in size <tomas@tuxteam.de> - 2019-01-01 19:50 +0100
Re: [OT] scanned files are large in size Anders Andersson <pipatron@gmail.com> - 2019-01-01 20:00 +0100
Re: [OT] scanned files are large in size "Thomas Schmitt" <scdbackup@gmx.net> - 2019-01-01 20:30 +0100
Re: [OT] scanned files are large in size <tomas@tuxteam.de> - 2019-01-01 20:40 +0100
Re: [OT] scanned files are large in size kamaraju kusumanchi <raju.mailinglists@gmail.com> - 2019-01-02 04:50 +0100
Re: [OT] scanned files are large in size tomas@tuxteam.de - 2019-01-02 10:40 +0100
Re: [OT] scanned files are large in size Joe <joe@jretrading.com> - 2019-01-02 11:10 +0100
Re: [OT] scanned files are large in size <tomas@tuxteam.de> - 2019-01-02 11:30 +0100
Re: [OT] scanned files are large in size deloptes <deloptes@gmail.com> - 2019-01-02 12:10 +0100
Re: [OT] scanned files are large in size Chris Ramsden <chris.ramsden@gmail.com> - 2019-01-02 12:10 +0100
Re: [OT] scanned files are large in size <tomas@tuxteam.de> - 2019-01-02 12:40 +0100
Re: [OT] scanned files are large in size mick crane <mick.crane@gmail.com> - 2019-01-02 20:20 +0100
Re: [OT] scanned files are large in size Brian <ad44@cityscape.co.uk> - 2019-01-02 20:30 +0100
Re: [OT] scanned files are large in size David Wright <deblis@lionunicorn.co.uk> - 2019-01-03 03:50 +0100
Re: [OT] scanned files are large in size Siard <shiems146@kpnplanet.nl> - 2019-01-03 14:10 +0100
Re: [OT] scanned files are large in size Nicolas George <george@nsup.org> - 2019-01-03 14:20 +0100
Re: [OT] scanned files are large in size deloptes <deloptes@gmail.com> - 2019-01-03 15:20 +0100
Re: [OT] scanned files are large in size Siard <shiems146@kpnplanet.nl> - 2019-01-03 16:00 +0100
Re: [OT] scanned files are large in size Nicolas George <george@nsup.org> - 2019-01-03 17:30 +0100
Re: [OT] scanned files are large in size deloptes <deloptes@gmail.com> - 2019-01-03 17:30 +0100
Re: [OT] scanned files are large in size David Wright <deblis@lionunicorn.co.uk> - 2019-01-03 21:30 +0100
Re: [OT] scanned files are large in size Brian <ad44@cityscape.co.uk> - 2019-01-02 15:50 +0100
Re: [OT] scanned files are large in size <tomas@tuxteam.de> - 2019-01-02 16:00 +0100
Re: [OT] scanned files are large in size deloptes <deloptes@gmail.com> - 2019-01-02 16:20 +0100
Re: [OT] scanned files are large in size <tomas@tuxteam.de> - 2019-01-02 16:30 +0100
Re: [OT] scanned files are large in size deloptes <deloptes@gmail.com> - 2019-01-02 17:20 +0100
Re: [OT] scanned files are large in size <tomas@tuxteam.de> - 2019-01-02 17:40 +0100
Re: [OT] scanned files are large in size Brian <ad44@cityscape.co.uk> - 2019-01-02 20:10 +0100
Re: [OT] scanned files are large in size Nicolas George <george@nsup.org> - 2019-01-02 16:20 +0100
Re: [OT] scanned files are large in size tomas@tuxteam.de - 2019-01-02 16:20 +0100
Re: [OT] scanned files are large in size Joe <joe@jretrading.com> - 2019-01-02 18:00 +0100
Re: [OT] scanned files are large in size David Wright <deblis@lionunicorn.co.uk> - 2019-01-03 04:10 +0100
Re: [OT] scanned files are large in size David Wright <deblis@lionunicorn.co.uk> - 2019-01-03 03:30 +0100
Re: [OT] scanned files are large in size kamaraju kusumanchi <raju.mailinglists@gmail.com> - 2019-01-03 05:00 +0100
Re: [OT] scanned files are large in size Brian <ad44@cityscape.co.uk> - 2019-01-04 18:30 +0100
Re: [OT] scanned files are large in size Gene Heskett <gheskett@shentel.net> - 2019-01-04 19:50 +0100
Re: [OT] scanned files are large in size Brian <ad44@cityscape.co.uk> - 2019-01-04 20:50 +0100
Re: [OT] scanned files are large in size deloptes <deloptes@gmail.com> - 2019-01-04 20:40 +0100
Re: [OT] scanned files are large in size Brian <ad44@cityscape.co.uk> - 2019-01-04 21:00 +0100
Re: [OT] scanned files are large in size David Wright <deblis@lionunicorn.co.uk> - 2019-01-05 03:20 +0100
Re: [OT] scanned files are large in size Brian <ad44@cityscape.co.uk> - 2019-01-01 21:10 +0100
Re: [OT] scanned files are large in size kamaraju kusumanchi <raju.mailinglists@gmail.com> - 2019-01-02 05:00 +0100
Re: [OT] scanned files are large in size Brian <ad44@cityscape.co.uk> - 2019-01-02 20:20 +0100
Re: [OT] scanned files are large in size Jörg-Volker Peetz <jvpeetz@web.de> - 2019-01-02 12:40 +0100
Re: [OT] scanned files are large in size kamaraju kusumanchi <raju.mailinglists@gmail.com> - 2019-01-03 05:00 +0100
Re: [OT] scanned files are large in size David Wright <deblis@lionunicorn.co.uk> - 2019-01-03 06:10 +0100
Re: [OT] scanned files are large in size Jörg-Volker Peetz <jvpeetz@web.de> - 2019-01-03 09:40 +0100
Re: [OT] scanned files are large in size Jonathan Dowland <jmtd@debian.org> - 2019-01-03 14:50 +0100
Re: [OT] scanned files are large in size David Wright <deblis@lionunicorn.co.uk> - 2019-01-03 21:50 +0100
Re: [OT] scanned files are large in size Jonathan Dowland <jmtd@debian.org> - 2019-01-04 11:00 +0100
csiph-web