[Bug 192176] Re: Scanner output always JPEG compressed

2019-04-06 Thread Vier Eck
The original problem and it's solution did also apply to me; however, I
did not find any option in xsane to change compression; I had to change
the .drc-file directly under the ~/.sane/xsane directory.

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[Bug 192176] Re: Scanner output always JPEG compressed

2017-03-05 Thread Bug Watch Updater
** Changed in: hplip (Debian)
   Status: Confirmed => Fix Released

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[Bug 192176] Re: Scanner output always JPEG compressed

2014-03-28 Thread SmilingInSeattle
I found this thread after scanning to create PDFs for emailing with my
recently purchased HPLaserJet M1212nf MFP.  The  quality of text scans
are terrible.  I thought I had a kludgy solution from the 2010 posts,
but since I'm using hplip3.14.1 I see that solution is no longer even
viable.  I tried changing resolutions to no avail, but now I understand
why scans are quicker no than with HP LaserJet 5 that this printer
replaced.  I thought it was a technological advancement. Ha!  I would
really like to have better quality than faster speeds.

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[Bug 192176] Re: Scanner output always JPEG compressed

2014-03-28 Thread Till Kamppeter
SmilingInSeattle, please open a new bug (on the package hplip) about
this problem, as Robert Ancell already suggests in comment #23.

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[Bug 192176] Re: Scanner output always JPEG compressed

2013-05-08 Thread Hans Petter Birkeland
Here is simple-scan.log and the resulting PNG in a ZIP file. Also, in
the log file there is a line about jpeg quality. And there is no setting
for compression quality in Preferences. The only quality setting is
Resolution (dpi).


** Attachment added: simple-scan.log+png.zip
   
https://bugs.launchpad.net/ubuntu/+source/hplip/+bug/192176/+attachment/3669587/+files/simple-scan.log%2Bpng.zip

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[Bug 192176] Re: Scanner output always JPEG compressed

2013-05-08 Thread Hans Petter Birkeland
Also, from David Suffield's output of 'scanimage -h' above:

 --compression None|JPEG [JPEG]
Selects the scanner compression method for faster scans, possibly at
the expense of image quality.


When I do the same command I only get

--compression JPEG [JPEG]

i.e. I don't get the 'None' option. So it seems uncompressed scans are
not supported for my scanner (HP Photosmart 6510). I find this quite
outrageous, that some devloper has taken the liberty to decide that I
don't need uncompressed scans! Especially since there is AFAIK no
alternative to Sane.

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[Bug 192176] Re: Scanner output always JPEG compressed

2013-05-08 Thread Robert Ancell
Simple Scan reports the same as scanimage does - it cannot disable
compression which is why the image is compressed. Hans - I suggest you
open a new bug here. This bug is about the default being set to
compressed (and simple scan not being able to disable it). The bug you
are reporting is that your driver/scanner can only do compressed.

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[Bug 192176] Re: Scanner output always JPEG compressed

2013-05-07 Thread Hans Petter Birkeland
I'm returning to this.
I have Xsane 0.998 and hplip 3.12.2. In Xsane's Advanced Options dialog the 
only alternative I get for compression is JPEG. It is not possible to set to 
none. And if I try the OP's fix and edit that file, Xsane overwrites it the 
next time it starts. So after three years nothing has happened, it is still not 
possible to save an uncompressed tif file! I find this rather outrageous!

Also, Robert Ancell claims that Simple-scan will save uncompressed, but
it certainly does not. Simple-scan 3.4.3.

Does all this mean that there is no way to scan uncompressed with a HP
scanner? If so, what kind of scanner do I need to get uncompressed
scans?

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[Bug 192176] Re: Scanner output always JPEG compressed

2013-05-07 Thread Robert Ancell
Hans, are you saving as a PNG? If there are compression artifacts,
please attach ~/.cache/simple-scan/simple-scan.log after scanning and
this will indicate if simple-scan attempted to disable this feature.

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[Bug 192176] Re: Scanner output always JPEG compressed

2010-02-16 Thread Robert Ancell
** Changed in: simple-scan (Ubuntu)
   Status: Triaged = Fix Released

** Changed in: simple-scan
   Status: Fix Committed = Fix Released

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[Bug 192176] Re: Scanner output always JPEG compressed

2010-02-15 Thread Till Kamppeter
** Also affects: simple-scan (Ubuntu)
   Importance: Undecided
   Status: New

** Changed in: simple-scan (Ubuntu)
   Status: New = Confirmed

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[Bug 192176] Re: Scanner output always JPEG compressed

2010-02-15 Thread Till Kamppeter
This is a problem of simple-scan not offering the advanced options of
the driver. The hpaio SANE driver has the needed functionality.

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Re: [Bug 192176] Re: Scanner output always JPEG compressed

2010-02-15 Thread Andrey Paramonov
2010/2/15 Till Kamppeter till.kamppe...@gmail.com:
 This is a problem of simple-scan not offering the advanced options of
 the driver. The hpaio SANE driver has the needed functionality.

I do not agree. You say that simple-scan and every other frontend
should implement the ability to configure the backend. This is bad
design because:

1) There is no interoperability between frontends (user must configure
each frontend).
2) Every frontend author should take effort and write the code.
3) Code duplication.

Please tell if it's hard to implement global backend option and why.

Andrey Paramonov

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[Bug 192176] Re: Scanner output always JPEG compressed

2010-02-15 Thread Robert Ancell
Simple scan now disables compression on drivers that support it

** Also affects: simple-scan
   Importance: Undecided
   Status: New

** Changed in: simple-scan
   Importance: Undecided = Low

** Changed in: simple-scan (Ubuntu)
   Status: Confirmed = Triaged

** Changed in: simple-scan (Ubuntu)
   Importance: Undecided = Low

** Changed in: simple-scan
   Status: New = Fix Committed

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Re: [Bug 192176] Re: Scanner output always JPEG compressed

2010-02-15 Thread Andrey Paramonov
2010/2/16 Robert Ancell robert.anc...@canonical.com:
 Simple scan now disables compression on drivers that support it

Very nice, I'll upgrade to the new version as soon as it propagates to
the repository.

Andrey Paramonov

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[Bug 192176] Re: Scanner output always JPEG compressed

2010-02-14 Thread Andrey Paramonov
Hello!

Recently new SANE frontends started to appear. A very nice one is Simple Scan:
 
launchpad.net/simple-scan

However, it's focused on interface simplicity and does not provide a way
to set Compression to None in the Advanced Options dialog. Nor it
supports command line option not to garble the image.

How should I proceed in this case?

Andrey Paramonov

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Re: [Bug 192176] Re: Scanner output always JPEG compressed

2009-05-14 Thread Andrey Paramonov
2009/5/13 dwelch91 dwelc...@gmail.com:
 Not commenting on the merits of this defect report, but I will point out
 that this has been the default in HPLIP since our first release, and was
 the default in HPOJ, the previous project for HP print/scan support (in
 other words, this default has been in place for approximately 9 years,
 it was not changed recently, AFAIK).


Hello!

As of now, I cannot really confirm or disprove your statement, because
I do not have older packages any more. Anyway, is it possible to
implement global config option to turn the undesired behavior off?

Thanks for your effort,
Andrey

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[Bug 192176] Re: Scanner output always JPEG compressed

2009-05-14 Thread David Suffield
scanimage -h

Usage: scanimage [OPTION]...

Start image acquisition on a scanner device and write PNM image data to
standard output.

Parameters are separated by a blank from single-character options (e.g.
-d epson) and by a = from multi-character options (e.g. --device-name=epson).
-d, --device-name=DEVICE   use a given scanner device (e.g. hp:/dev/scanner)
--format=pnm|tiff  file format of output file
-i, --icc-profile=PROFILE  include this ICC profile into TIFF file
-L, --list-devices show available scanner devices
-f, --formatted-device-list=FORMAT similar to -L, but the FORMAT of the output
   can be specified: %d (device name), %v (vendor),
   %m (model), %t (type), and %i (index number)
-b, --batch[=FORMAT]   working in batch mode, FORMAT is `out%d.pnm' or
   `out%d.tif' by default depending on --format
--batch-start=#page number to start naming files with
--batch-count=#how many pages to scan in batch mode
--batch-increment=#increase number in filename by an amount of #
--batch-double increment page number by two for 2sided originals
   being scanned in a single sided scanner
--batch-prompt ask for pressing a key before scanning a page
--accept-md5-only  only accept authorization requests using md5
-p, --progress print progress messages
-n, --dont-scanonly set options, don't actually scan
-T, --test test backend thoroughly
-h, --help display this help message and exit
-v, --verbose  give even more status messages
-B, --buffer-size  change default input buffersize
-V, --version  print version information

Options specific to device `hpaio:/usb/PSC_750?serial=MY17KC22C0WB':
  Scan mode:
--mode Lineart|Gray|Color [Color]
Selects the scan mode (e.g., lineart, monochrome, or color).
--resolution 75..600dpi [75]
Sets the resolution of the scanned image.
  Advanced:
--contrast 0..100 [inactive]
Controls the contrast of the acquired image.
--compression None|JPEG [JPEG]
Selects the scanner compression method for faster scans, possibly at
the expense of image quality.
--jpeg-quality 0..100 [10]
Sets the scanner JPEG compression factor. Larger numbers mean better
compression, and smaller numbers mean better image quality.
--batch-scan[=(yes|no)] [no]
Enables continuous scanning with automatic document feeder (ADF).
--source Flatbed [Flatbed]
Selects the scan source (such as a document-feeder).
  Geometry:
--length-measurement Unknown|Approximate|Padded [Padded]
Selects how the scanned image length is measured and reported, which
is impossible to know in advance for scrollfed scans.
-l 0..215.9mm [0]
Top-left x position of scan area.
-t 0..296.926mm [0]
Top-left y position of scan area.
-x 0..215.9mm [215.9]
Width of scan-area.
-y 0..296.926mm [296.926]
Height of scan-area.

Type ``scanimage --help -d DEVICE'' to get list of all options for
DEVICE.

List of available devices:
hpaio:/usb/PSC_750?serial=MY17KC22C0WB
hpaio:/net/HP_Color_LaserJet_CM1017?ip=15.252.39.136
hpaio:/net/HP_LaserJet_M1120n_MFP?ip=15.252.35.107
hpaio:/net/HP_LaserJet_M1522nf_MFP?ip=15.252.35.173
hpaio:/net/HP_LaserJet_M1120n_MFP?ip=15.5.179.63

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[Bug 192176] Re: Scanner output always JPEG compressed

2009-05-14 Thread David Suffield
For xsane set Compression to None in the Advanced Options dialog. These
options are sticky so you won't have to set it again for this device.

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[Bug 192176] Re: Scanner output always JPEG compressed

2009-05-13 Thread dwelch91
Not commenting on the merits of this defect report, but I will point out
that this has been the default in HPLIP since our first release, and was
the default in HPOJ, the previous project for HP print/scan support (in
other words, this default has been in place for approximately 9 years,
it was not changed recently, AFAIK).

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[Bug 192176] Re: Scanner output always JPEG compressed

2009-05-13 Thread Bruce Cowan
I'm unsubscribing from all my bug reports here once I receive any
bugmail, but I'd like to point out that the last comment was rather
rude.

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Re: [Bug 192176] Re: Scanner output always JPEG compressed

2009-05-13 Thread dwelch91
Wow. OK...

I was merely addressing this comment:

I argue that the new default value for the compression option is *not* a
good balance between speed and quality.
For me, the new default behavior is a clear *regression* compared to the
previous versions.

made by Andrey earlier in this thread. This is not a regression, since
nothing has changed.


On Wed, May 13, 2009 at 3:45 PM, Bruce Cowan l...@bcowan.fastmail.co.ukwrote:

 I'm unsubscribing from all my bug reports here once I receive any
 bugmail, but I'd like to point out that the last comment was rather
 rude.

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[Bug 192176] Re: Scanner output always JPEG compressed

2008-06-03 Thread Andrey Paramonov
Hi Aaron!

You say that xsane is your primary frontend. But it doesn't seem to be
documented anywhere in xsane manual how to disable the image corruption.
A user should not have to play Sherlock Holmes in order to find a way to
turn the image corruption off. As of now, the whole feature effectively
resembles infamous proprietary Digital Restrictions Management systems.
Please, provide a straightforward way to disable image corruption and
document it!

Andrey Paramonov

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[Bug 192176] Re: Scanner output always JPEG compressed

2008-06-03 Thread Andrey Paramonov
Hi Aaron!

You say that xsane is your primary frontend. But it doesn't seem to be
documented anywhere in xsane manual how to disable the image corruption.
A user should not have to play Sherlock Holmes in order to find a way to
turn the image corruption off. As of now, the whole feature effectively
resembles infamous proprietary Digital Restrictions Management systems.
Please, provide a straightforward way to disable image corruption and
document it!

Andrey Paramonov

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[Bug 192176] Re: Scanner output always JPEG compressed

2008-06-03 Thread Andrey Paramonov
Hi Aaron!

You say that xsane is your primary frontend. But it doesn't seem to be
documented anywhere in xsane manual how to disable the image corruption.
A user should not have to play Sherlock Holmes in order to find a way to
turn the image corruption off. As of now, the whole feature effectively
resembles infamous proprietary Digital Restrictions Management systems.
Please, provide a straightforward way to disable image corruption and
document it!

Andrey Paramonov

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[Bug 192176] Re: Scanner output always JPEG compressed

2008-06-02 Thread Bug Watch Updater
** Changed in: hplip (Debian)
   Status: New = Confirmed

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[Bug 192176] Re: Scanner output always JPEG compressed

2008-06-02 Thread Andrey Paramonov
Hi!

I'm the original bug submitter and I'm really disappointed that you have
set status to invalid. I argue that the new default value for the
compression option is *not* a good balance between speed and quality.
For me, the new default behavior is a clear *regression* compared to the
previous versions.

What you say sounds kind of like 90% of users' content is so poor that
they will not even notice quality reduction anyway. Please note
however, that in some areas such an evident image *corruption* is not
acceptable, take for example OCR. I argue that OCR is a very common
application for scanners, so most users probably would *not* benefit
from image quality loss.

Having said all that, it *could* be a sensible default value if a user
could easily switch the lossy compression off. As of now, there seems to
be no system-wide setting, at least documented, that could switch the
image corruption once and for all. It's even not obvious how to turn the
image corruption off on program-by-program basis (please see man xsane
and xsane html documentation -- there is no mention of compression).
It took me considerable amount of time just to understand that this is
not a bug but a [mis]feature. I guess many users just started to use
higher resolution settings to compensate for quality reduction.

Please consider reopening the bug!

Andrey Paramonov

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[Bug 192176] Re: Scanner output always JPEG compressed

2008-06-02 Thread Aaron Albright
Hey Andrey,

I spoke with the dev team and our thinking is this isn't a defect
because it can be changed in the xsane settings and once changed it will
stay with the new setting.  The default is set because in a majority of
cases default works good for most users.

As for system wide we primarily only support scanning with xsane and
each user would need to change the setting.

Maybe we're not clear on the use case you are wanting to improve?

Thanks!

A

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[Bug 192176] Re: Scanner output always JPEG compressed

2008-02-19 Thread Aaron Albright
This is correct, the default for xsane and most other applications are
to have jpeg compression on to increase the speed of the scanning.  You
can disable the jpeg compression depending on the application you are
using, and it should remain off until it's changed.

If I'm understanding what you are seeking correctly, you assumed that
jpeg compression would be off and want that to be the default instead of
on.  If so the setting is set by the application you are using, although
default on is preferred because of the increase speed in scanning and
because for most users this setting is sufficient.   It's a balance
between speed and quality.

Hope this helps.

Aaron

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[Bug 192176] Re: Scanner output always JPEG compressed

2008-02-19 Thread Aaron Albright
Setting to invalid because it's not likely this default will be changed.

A

** Changed in: hplip (Ubuntu)
   Status: New = Invalid

** Also affects: hplip
   Importance: Undecided
   Status: New

** Changed in: hplip
   Status: New = Invalid

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[Bug 192176] Re: Scanner output always JPEG compressed

2008-02-16 Thread Bug Watch Updater
** Changed in: hplip (Debian)
   Status: Unknown = New

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