[sane-devel] How to accurately scan A4(210mmx297mm) size paper?

2008-06-29 Thread Nicolas
Yep But was just warning eagleskycloud, whose concern was to get an exact sized scan area, in mm Can be possible with pixma too, but requires scanning at 600 dpi Which apparently is not possible with Canon's Win driver, but works fine (up to 4800 dpi on some pixma models) with Sane pixma backend

[sane-devel] How to accurately scan A4(210mmx297mm) size paper?

2008-06-28 Thread litlle girl
Is it all about 0.02mm? When I select DIN A4 portrait in Xsane, selects seable area, Xsane gets scan area 210.00m x 296.98mm. All works ;) BTW: It is very common that paper size from laser printers is streched or bended in result of thermal printing proces. Regard LLG

[sane-devel] How to accurately scan A4(210mmx297mm) size paper?

2008-06-28 Thread Nicolas
Actually, result may depend on the scanner and backend you are using. Be careful that size in mm indicated by Xsane preview may not represent the actual scanned area. In the case of the pixma backend, due to alignment rounding, the actual scanned area is given by the pixel area size (on the left

[sane-devel] How to accurately scan A4(210mmx297mm) size paper?

2008-06-28 Thread litlle girl
Maybe beter scan bigger area and then crop/autocrop image, in the case of the pixma backend. LLG

[sane-devel] How to accurately scan A4(210mmx297mm) size paper?

2008-06-27 Thread eagleskycloud
Hi, I want to accurately scan A4 paper(210mmx297mm),but there is not A4(210mmx297mm) item in preset area drop down box in preview window of XSane. I add 210mmx297mm item in the preset area drop down box. XSane exit and output segmentation fault in console after I select 210mmx297mm and I don't

[sane-devel] How to accurately scan A4(210mmx297mm) size paper?

2008-06-27 Thread m. allan noah
On 6/26/08, eagleskycloud eagleskycloud at gmail.com wrote: Hi, I want to accurately scan A4 paper(210mmx297mm),but there is not A4(210mmx297mm) item in preset area drop down box in preview window of XSane. my version of Xsane (.95) has DIN A3, A4, and A5, both in portrait and landscape.

[sane-devel] How to accurately scan A4(210mmx297mm) size paper?

2008-06-27 Thread eagleskycloud
Yes my XSane alse has DIN A3 , DIN A4 and so on,and both in portrait and landscape. But is DIN A3 same to A3? Is DIN A4 same to A4?Is DIN A5 same to A5? DIN is standard of Germany.Is the size of DIN A3 is 297mm x 420mm? Is the size of DIN A4 is 210mm x 297mm? 2008/6/27 m. allan noah

[sane-devel] How to accurately scan A4(210mmx297mm) size paper?

2008-06-27 Thread Patrick Londema
DIN is the German standards body that actually 'invented' the A, B and C paper standards in 1922, but ISO copied them. DIN A4 is thus exactly the same as ISO A4, DIN A3 is the same as ISO A3, etc. I do wonder why XSane uses DIN is the name as it might confuse a few people and doesn't add

[sane-devel] How to accurately scan A4(210mmx297mm) size paper?

2008-06-27 Thread Olaf Meeuwissen
Patrick Londema patrick at evilplatypus.net writes: DIN is the German standards body that actually 'invented' the A, B and C paper standards in 1922, but ISO copied them. DIN A4 is thus exactly the same as ISO A4, DIN A3 is the same as ISO A3, etc. I do wonder why XSane uses DIN is the

[sane-devel] How to accurately scan A4(210mmx297mm) size paper?

2008-06-27 Thread René Kjellerup
: [sane-devel] How to accurately scan A4(210mmx297mm) size paper? DIN is the German standards body that actually 'invented' the A, B and C paper standards in 1922, but ISO copied them. DIN A4 is thus exactly the same as ISO A4, DIN A3 is the same as ISO A3, etc. I do wonder why

[sane-devel] How to accurately scan A4(210mmx297mm) size paper?

2008-06-27 Thread Oliver Schwartz
Hello all, IIRC the person who wrote XSane is indeed german (Oliver Schwartz) well, I'm german, but I didn't write XSane :-( That honour belongs to Oliver Rauch (who is also german AFAIK). Regards, Oliver

[sane-devel] How to accurately scan A4(210mmx297mm) size paper?

2008-06-27 Thread René Kjellerup
-Oprindelig meddelelse- Fra: Oliver Schwartz [mailto:Oliver.Schwartz at gmx.de] Sendt: 27. juni 2008 12:24 Til: Ren? Kjellerup Cc: sane-devel at lists.alioth.debian.org Emne: Re: [sane-devel] How to accurately scan A4(210mmx297mm) size paper? Hello all, IIRC the person

[sane-devel] How to accurately scan A4(210mmx297mm) size paper?

2008-06-27 Thread hh...@gmx.de
Am 27.06.2008 um 07:26 schrieb eagleskycloud: But is DIN A3 same to A3? Is DIN A4 same to A4?Is DIN A5 same to A5? DIN is standard of Germany.Is the size of DIN A3 is 297mm x 420mm? Is the size of DIN A4 is 210mm x 297mm? Yes, they are basically the same. The A series was

[sane-devel] How to accurately scan A4(210mmx297mm) size paper?

2008-06-27 Thread Nicolas
Keep in mind that some backend may perform adjustments on width and height values, that are imposed by the scanner. For instance, in the pixma backend, the count of pixels in width and height need to be aligned to 32 bits for some models, because this is simply imposed by the pixma protocol.