[sane-devel] Colors and Calibration of a Genius ColorPage-Vivid 3XE

[Renato]

Hey Allan,

Since a some weeks I attempt find Henning because the problem above, without success. You can help-me? Or this is a work for Henning only?

I can make more tests and help you (or Henning) to solve the problem, but alone is very difficult. I velieve this is a little bug.

Thanks.

Renato Barbosa Santiago


On Sun, 24 Feb 2008 14:21:05 -0300
Renato <rbsanti at bol.com.br> wrote:

> Hello Henning,
> 
> I have some problems with my scanner Genius ColorPage-Vivid 3XE and your backend gt68xx. In first time, I accompany the evolution of your backend since years ago, and is a well done work. Congratulations!!!
> 
> Now, about my problems: The colors is wrong!
> 
> Seemingly, the problem is in the calibration process. When I use the scanner in first time (after some time off), the calibration works fine and the image have a good aspect. If SANE don't calibrate scanner again, others scans works fine.
> 
> But, after some time in use, if SANE do a new calibration, the colors in image are wrong, in some cases violet, in others bluely.
> 
> Seemingly, the problem occurs in dark parts of image. White seem always correct.
> 
> In Windows, with de original driver, the scanner works fine.
> 
> I'm using:
> SANE 1.0.18
> gt68xx 1.0-84
> xsane 0.995
> 
> All compiled by me.
> 
> My GNU/Linux is a Debian 4 (Etch)
> 
> Above, the log of a scan with colors wrong.
> 
> The process gt68xx_afe_ccd_calc (calibration?) is very slow, in comparisson with the original driver.
> 
> rbs at quarto:/$ xsane
> [sanei_debug] Setting debug level of gt68xx to 3.
> [gt68xx] SANE GT68xx backend version 1.0 build 84 from sane-backends 1.0.18
> [gt68xx] attach: found Genius flatbed scanner Colorpage Vivid3xe at libusb:001:0
> 09
> [gt68xx] sane_init: can't set afe values #I attempt place a afe settings in gt68xx, without perceptible effect
> [gt68xx] get_id: vendor id=0x0458, product id=0x2017, DID=0x00000009, FID=0xB8B7
> [gt68xx] sane_get_parameters: pixels 2575x3531x256
> [gt68xx] sane_get_parameters: pixels 1283x1761x65536
> [gt68xx] sane_get_parameters: pixels 1283x1761x65536
> [gt68xx] sane_get_parameters: pixels 1283x1761x65536
> [gt68xx] sane_get_parameters: pixels 1283x1761x65536
> [gt68xx] sane_get_parameters: pixels 1283x1761x65536
> [gt68xx] sane_get_parameters: pixels 1283x1761x65536
> [gt68xx] Please wait for lamp warm-up
> [gt68xx] gt68xx_wait_lamp_stable: Lamp is stable after 8 secs (13 secs total)
> [gt68xx] gt68xx_afe_ccd_calc: WARNING: max_white  32   min_black   0  max_black 
>   0
> [gt68xx] gt68xx_afe_ccd_calc: WARNING: max_white 142   min_black 122  max_black 
> 123
> [gt68xx] gt68xx_afe_ccd_calc: WARNING: max_white 137   min_black 112  max_black 
> 114
> [gt68xx] gt68xx_afe_ccd_calc: WARNING: max_white 143   min_black 121  max_black 
> 122
> [gt68xx] gt68xx_afe_ccd_calc: WARNING: max_white 138   min_black 110  max_black 
> 111
> [gt68xx] gt68xx_afe_ccd_calc: WARNING: max_white 145   min_black 119  max_black 
> 121
> [gt68xx] gt68xx_afe_ccd_calc: WARNING: max_white 136   min_black 113  max_black 
> 114
> [gt68xx] gt68xx_afe_ccd_calc: WARNING: max_white 147   min_black 119  max_black 
> 121
> [gt68xx] gt68xx_afe_ccd_calc: WARNING: max_white 137   min_black 111  max_black 
> 112
> [gt68xx] gt68xx_afe_ccd_calc: WARNING: max_white 138   min_black 109  max_black 
> 110
> [gt68xx] gt68xx_afe_ccd_calc: WARNING: max_white 142   min_black 122  max_black 
> 123
> [gt68xx] gt68xx_afe_ccd_calc: WARNING: max_white 143   min_black 121  max_black 
> 122
> [gt68xx] gt68xx_afe_ccd_calc: WARNING: max_white 145   min_black 120  max_black 
> 121
> [gt68xx] gt68xx_afe_ccd_calc: WARNING: max_white 147   min_black 118  max_black 
> 120
> [gt68xx] gt68xx_afe_ccd_calc: WARNING: max_white 137   min_black 113  max_black 
> 114
> [gt68xx] gt68xx_afe_ccd_calc: WARNING: max_white 138   min_black 111  max_black 
> 112
> [gt68xx] gt68xx_afe_ccd_calc: WARNING: max_white 138   min_black 109  max_black 
> 110
> [gt68xx] afe 0x1f 0x86 0x1f 0x72 0x21 0x8a
> [gt68xx] exposure 0x157 0x157 0x157
> [gt68xx] sane_get_parameters: pixels 644x883x256
> [gt68xx] sane_cancel: scan finished, scanned 1705956 bytes in 123 seconds
> [gt68xx] sane_get_parameters: pixels 1283x1761x65536
> [gt68xx] sane_get_parameters: pixels 1283x1761x65536
> [gt68xx] sane_get_parameters: pixels 1283x1761x65536
> [gt68xx] sane_get_parameters: pixels 1283x1761x65536
> [gt68xx] sane_get_parameters: pixels 1283x1761x65536
> 
> 
> Thanks.
> 
> Renato Barbosa Santiago
> rbsanti at quartzo.net
> 
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