{"issue":{"title":"How to darken image?","user":{"login":"chuckb","id":239663,"url":"https://api.github.com/users/chuckb","avatar_url":"https://secure.gravatar.com/avatar/8bcc9bee57dd688275afb54e0a06f2c4?d=https://a248.e.akamai.net/assets.github.com%2Fimages%2Fgravatars%2Fgravatar-140.png","gravatar_id":"8bcc9bee57dd688275afb54e0a06f2c4"},"created_at":"2011-12-28T14:56:54Z","milestone":null,"labels":[],"state":"open","updated_at":"2011-12-28T18:23:15Z","id":2671721,"pull_request":{"patch_url":null,"html_url":null,"diff_url":null},"closed_at":null,"html_url":"https://github.com/Flameeyes/scan2pdf/issues/3","body":"Using an HPLJ3055 multi-function unit.  Pencil drawings in lineart mode are not legible.  In grey scale mode, more comes out but still not legible.  Is there a way to adjust the interpretation between light and dark?","number":3,"url":"https://api.github.com/repos/Flameeyes/scan2pdf/issues/3","comments":3,"assignee":null},"comment":{"user":{"login":"chuckb","id":239663,"url":"https://api.github.com/users/chuckb","avatar_url":"https://secure.gravatar.com/avatar/8bcc9bee57dd688275afb54e0a06f2c4?d=https://a248.e.akamai.net/assets.github.com%2Fimages%2Fgravatars%2Fgravatar-140.png","gravatar_id":"8bcc9bee57dd688275afb54e0a06f2c4"},"created_at":"2011-12-28T18:23:15Z","updated_at":"2011-12-28T18:23:15Z","id":3293542,"body":"Yes, I dug at some length in the backend code for hplib and it appears like it is unsupported.  But it may be possible with unpaper (with lesser degree of success I realize).  Will tinker with and report back, with code within scan2pdf to send to unpaper.","url":"https://api.github.com/repos/Flameeyes/scan2pdf/issues/comments/3293542"},"action":"created"}