|Re: HP41 Wand Update|
Message #12 Posted by Dave Shaffer on 12 Jan 2007, 2:20 p.m.,
in response to message #4 by Howard Owen
This bar code would be difficult to clean up. I tried applying a threshold, and a lot of the grays went away, and the intercharacter spacings are cleaner, but the spacing looks rather variable. I don't have a wand, so I have no idea how it would scan. I'd be glad to send the cleaned up file to anybody who wants to try it. Conversely, could you send me the original PDF to play with? Thanks.
It looks to me like the original scanning resolution was just not enough. Plus, for something that is intrinsically black and white, the scan product should also be black and white (AND NOT JPEG!! jpeg images have fuzzy stuff all over them, even if they started out as black and whites!)
Perhaps before there is more scanning of bar codes for future DVDs, there should be some trials, with trial distributions in whatever format is likely to be the final, so that wand users can give them a try. Although the files may be larger, I recommend that graphics files for purposes like this be in a non-lossy format. GIF, BMP, PNG, TIFF (gigantic files may result, though), PCX are all acceptable (but some are not very "modern" anymore, such as my favorite PCX). Note also, that conversion to PDF results in losses. Bar code files should probably stay in their original grpahics format and not be converted to PDF. Doesn't everyone have graphics viewers and printers? If not, I could suggest a very nice shareware program.