Nikon CoolScan LS-9000 ED support
|
View:
New views
8 Messages
—
Rating Filter:
Alert me
|
 |
Nikon CoolScan LS-9000 ED support
by Rob Sims-6
::
Rate this Message:
As suggested by the web page, I'm posting here to let people know I'm
working on a back end for the Nikon LS-9000 (patching coolscan2.c). I also have a few questions. http://www.sane-project.org/unsupported/nikon-ls9000-ed.html I have basic functionality working, but it's definitely not ready for prime time. The Nikon docs are inaccurate and incomplete, so it's been a little slow going. To Do: 1) Fix SET WINDOW for IR channel. Currently returns 5/24/00. Following scan fails, unless I do a failing SET WINDOW followed by a GET WINDOW. 2) Use thumbnail scan mode to capture the whole film strip. Regular scan at lowest scan resolution is limited to ~ 1/2 the strip. Make thumbnail mode an option since it can use a resolution and size not available to a real scan. 3) Add recognition of film holder to help enable (4) 4) Add knowledge of frame positions for various film holders. Some holders have fixed film positions (35mm slides, 35mm strips), others have variable frame sizes and positions. For example, the 865* holders support at least 4 different frame sizes (4.5x6, 6x6, 6x7, 6x9cm), so some user settings will be required also. 5) Add support for multi-pass scanning (option + passthrough to scanner) 6) Get the autoexposre buttons to work reliably. Any feeback? Is it proper to post patches here? -- Rob -- sane-devel mailing list: sane-devel@... http://lists.alioth.debian.org/mailman/listinfo/sane-devel Unsubscribe: Send mail with subject "unsubscribe your_password" to sane-devel-request@... |
|
|
Re: Nikon CoolScan LS-9000 ED support
by Alessandro Zummo
::
Rate this Message:
|
|
|
Re: Nikon CoolScan LS-9000 ED support
by Rob Sims-6
::
Rate this Message:
On Wed, Apr 23, 2008 at 01:51:14AM +0200, Alessandro Zummo wrote:
> On Tue, 22 Apr 2008 17:21:09 -0600 > Rob Sims <sane-z@...> wrote: > > As suggested by the web page, I'm posting here to let people know I'm > > working on a back end for the Nikon LS-9000 (patching coolscan2.c). I > > also have a few questions. > I did some work in improving infrared and general coolscan > support in the coolscan3 driver. You might want to give it a look. Thanks - I was basing my changes on the released package; I have now checked out of cvs. Why the name change? The supported scanner list is the same, and many of the changes seem cosmetic. If coolscan3 is destined to replace 2, I'll rebase the patches against it. Does anyone know of features unimplemented for the 8000 that may be common to the 9000? I'm currently planning on enabling the stuff I add for only the 9000. What is the "reply" convention on this list - Debian lists it's to reply to list only, and on kernel lists it's to retain the cc: list. -- Rob -- sane-devel mailing list: sane-devel@... http://lists.alioth.debian.org/mailman/listinfo/sane-devel Unsubscribe: Send mail with subject "unsubscribe your_password" to sane-devel-request@... |
|
|
Re: Nikon CoolScan LS-9000 ED support
by Alessandro Zummo
::
Rate this Message:
|
|
|
Re: Nikon CoolScan LS-9000 ED support
by Rob Sims-6
::
Rate this Message:
On Tue, Apr 22, 2008 at 05:21:09PM -0600, Rob Sims wrote:
> As suggested by the web page, I'm posting here to let people know I'm > working on a back end for the Nikon LS-9000 (patching coolscan2.c). I > also have a few questions. > http://www.sane-project.org/unsupported/nikon-ls9000-ed.html I've finally got something good enough for people to bang on. From http://www.robsims.com/coolscan9k.html: The existing coolscan2 backend did not support the Coolscan 9000. There was also a newer driver in cvs called coolscan3, which had some cleanup and changed infrared reading support from two front end passes to 4 channel, single pass. This driver started with the coolscan3 driver as suggested by Alessandro Zummo and grew quite a bit. First, this scanner is missing a few features that the driver expected: * No 8 bit color * No lookup tables for gamma correction * No autoexposure (with or without white balance) * No (auto)loader This scanner (as do other models in the family) has interchangeable film holders. Some holders have device-defined scanning areas, and some have soft defined areas. The frame areas can be user-defined for any holder, but defaults to that for only the medium format holders. I added a refresh button to allow quierying the device after changing holders, as the front end doesn't poll. The backend now supports changing holders at whim. There is support for the dropout (infrared) channel. You can select RGB + Gray for legacy front ends or RGBI for newer ones, or select infrared only, primarily designed to help get the exposure right. The Coolscan 9000 supports a "thumbnail" scan which basically scans the entire holder at a low resolution. I brought that interface out via the preview; in thumbnail mode, selections are scaled to the frames. Frame boundaries are drawn on the preview as guides. Since I was changing so much anyway, due to personal preference I changed the exposure controls from a linear to a logarithmic interface. Now, the scale is in "stops" which should be more intuitive for photographers. The scanner supports quite a bit of capability reporting, which I added in place of model-determined capabilities where possible. Because of this, I turned on recognizing vendor "Nikon" and products beginning with "LS" as a supported device. I added a mode select option, and chose the standard names "Transparency Adapter" and "Automatic Document Feeder" as a best fit. In the Transparency Adapter mode, the frame counter is not advanced. In ADF mode, the current frame is advanced after each scan. In ADF mode while thumbnails are active, if the selection is entirely within a frame, the selection is translated to each frame. If the selection covers area outside of a frame, whole frames are scanned. Also, if a thumnail preview scan has been done, empty frames will be skipped in ADF mode. This is primarily for use with the 35mm strip holder, which has two strips of 6. If strips of 4 are placed in the holder, frames 5 and 6 are missing. From the coolscan9k.c release notes: * Support both RGBI and two-pass infrared handling * Improved use of capability bits to mask options * Support for non-static device parameters (changeable film holders) * Remove a lot of miniscule mallocs * Support "thumbnail" mode where entire holder content is previewed * Exposure controls now in stops rather than linear * Support for user defineable frame locations (primarily intended for medium format support) * Support for frame grids rather than linear-only layout; some holders have parallel strips * A lot noisier in debug output * Support for non 8-bit capable scanners * Gather exposure info from inside multiple frames * ADF mode supports full-frame or partial frame scans; selection on thumbnail is translated. * Support for exposure analysis. * Support for infrared exposure analysis. Testing was done primarily with xsane. Do not do multi-frame scanning with the 3+1 option; xsane does not allocate the gamma table and has additional issues as well; however, manually scanning the frames one at a time works. quiteinsane and kooka were briefly tested, but there have been changes in the backend since then. I can post the tarball here if requested, otherwise please fetch from http://www.robsims.com/coolscan9k.tgz Criticise away - I can take it. -- Rob -- sane-devel mailing list: sane-devel@... http://lists.alioth.debian.org/mailman/listinfo/sane-devel Unsubscribe: Send mail with subject "unsubscribe your_password" to sane-devel-request@... |
|
|
Nikon CoolScan LS-9000 ED support
by Gerber van der Graaf-3
::
Rate this Message:
|
|
|
Re: Nikon CoolScan LS-9000 ED support
by m. allan noah-3
::
Rate this Message:
|
|
|
Re: Nikon CoolScan LS-9000 ED support
by Alessandro Zummo
::
Rate this Message:
|
signature.asc (196 bytes) | Free embeddable forum powered by Nabble | Forum Help |
