[sane-devel] Colors and Calibration of a Genius ColorPage-Vivid 3XE
Renato
rbsanti at bol.com.br
Sun Feb 24 17:21:05 UTC 2008
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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