> I finally started having a look at the coolscan2 backend. For my first > patch I added a new option, --quality, that may be used to activate the > "high quality scan" scanner option.
Thanks for taking over. I really don't have any time to spend on SANE at the moment. But what, exactly, is the high-quality option? Do you mean multisampling? For that to work, it's not sufficient to just set the relevant bits before scanning, you also have to actively read out the lines and sum them up yourself, the scanner doesn't do it for you. Also, not that not all scanners support multisampling. Also, if you mean multisampling, I'd call the option accordingly because "high-quality" doesn't really mean a lot. > My next work will be on activating a new option, --greyscale, in order > to scan in greyscale instead of RGB. Again, the scanner doesn't support that in hardware. And because it doesn't, I think it's better to scan RGB and leave the conversion to greyscale to the frontend or the user. (The scanner does have a single-colour mode, but that isn't greyscale, you can select one of the colour channels to be scanned exclusively, but I wouldn't call that greyscale). BTW, has anyone got the LS-50/5000 working in the end? Andras
