On 05/20/2014 12:27 AM, Octavio Alvarez wrote: > So far, I have repeated some of the tests with scanimage only and > target_code seems to be too high for my taste. 0x8000 seems like a lot > better value. I'm still testing though.
Hi, Stef. I have made some tests using scanimage only. I, effectively, don't get the artifacts anymore. Thanks a lot! However, you were right, the image quality has problems. Using target_code = 0xe000, the currently coded value, I get a bluish and saturated image. I tried lowering target_code across multiple values down to 0x4000. The lower the value, the better the quality but the darker the image. At 0xb000, the horizontal extremes of the image are white balanced but it is still noticeably bluish towards the center. This is, two small vertical correctly white-balanced sections are noticed at the left and right extremes. For example, at 0x8000, the image is not saturated anymore, and the image is way better white-balanced overall. However, the image is noticeably darker image (75% of the histogram with typical white at 55% luminosity). There is still a noticeably vertical stripe towards the blue, a bit off the center towards the right. At 0x4000, I don't get bluish stripes and perfect white-balance, but it results in only half of the histogram. I tried tweaking the "o" value (offset?) but I didn't seem to find any kind of pattern, except that if I set it too high I get badly colored stripes, so I just left them at their original values. Thanks again. -- sane-devel mailing list: [email protected] http://lists.alioth.debian.org/cgi-bin/mailman/listinfo/sane-devel Unsubscribe: Send mail with subject "unsubscribe your_password" to [email protected]
