I'm thinking my best bet is to use the default resolution with max x and max y.
On Thu, Jan 4, 2018 at 10:51 AM, Jeff Sadowski <jeff.sadow...@gmail.com> wrote: > I have been working on a php implementation of a scanner interface. > > I am making some progress. I have my code at > https://bitbucket.org/jeffsadowski/phpsaneng > > (Not anywhere ready for mainstream as for now it just lists the > options selected when I hit scan.) > > I'm at the point where I want to start a preview and I need to make a > decision of how to get a preview. > > I don't see a preview option to scanimage and am curious how xsane > gets it's preview. > > When I try a preview with xsane with test:1 scanner I get a perfect > grid. (I had set the "Select the test picture" to Grid) > > using scanimage '-h' '-d' 'test:1' > > I saw the options for test:1 > > So I tried > > scanimage '--batch=preview.jpg' '--format' 'jpeg' '--batch-count' '1' > '-d' 'test:1' '--test-picture' 'Grid' > > which did not come up with the same grid I get in the preview that xsane > shows. > > I thought well maybe it is getting the max x and y so I tried > > scanimage '--batch=preview.jpg' '--format' 'jpeg' '--batch-count' '1' > '-d' 'test:1' '--test-picture' 'Grid' '-x' '200' '-y' '200' > > that wasn't it either. > > Then I noticed xsane can only set x and y up to 20 which is weird. > even the defaults are 80 for x and 100 for y > > I tried 20x20 and 80x100 > but those didn't result in an image that xsane did either. > I also tried lowest resolutions that isn't it either. So I am curious > how xsane acquires a preview? > Or better yet what is the best way to acquire a preview with scanimage? > > I think I would want to have the scanner scan as fast as possible so I > thought lowest resolution. > I also think I want my preview of the full bed so max x and max y > the image I get when I try > > scanimage '--batch=preview.jpg' '--format' 'jpeg' '--batch-count' '1' > '-d' 'test:1' '--resolution' '1' '--test-picture' 'Grid' '-x' '200' > '-y' '200' > > doesn't even look like a grid at all. > > So I thought I'd ask this list for some help. -- sane-devel mailing list: sane-devel@lists.alioth.debian.org http://lists.alioth.debian.org/cgi-bin/mailman/listinfo/sane-devel Unsubscribe: Send mail with subject "unsubscribe your_password" to sane-devel-requ...@lists.alioth.debian.org