Search found 98 matches

by rkomar
22 Jan 2024, 10:45
Forum: Tutorials/How-To's
Topic: Table of Contents: adding links to an existing TOC in a PDF?
Replies: 9
Views: 7193

Re: Table of Contents: adding links to an existing TOC in a PDF?

Indexes and tables of contents are not the same thing. There is a good reason why many technical books have both. The table of contents gives you a summary of how the information is laid out, as well as directions on how to find each section. It is a big picture view of what the document is about. Y...
by rkomar
08 Oct 2022, 22:43
Forum: Tutorials/How-To's
Topic: Table of Contents: adding links to an existing TOC in a PDF?
Replies: 9
Views: 7193

Re: Table of Contents: adding links to an existing TOC in a PDF?

I have added bookmarks to existing PDFs using either ghostscript or pdfbeads. In either case, you have to provide the bookmark data yourself rather than have it automatically gleaned from the scanned images. It usually is a few hours work for complicated documents. However, if you only have one docu...
by rkomar
25 May 2022, 01:11
Forum: Scanners and Build Threads
Topic: Scanning setup/build/purchasing options for for scanning image heavy books of varying sizes/thicknesses
Replies: 8
Views: 4746

Re: Scanning setup/build/purchasing options for for scanning image heavy books of varying sizes/thicknesses

I have the 3600 model which I bought over 13 years ago. The current 3800 model looks very similar, but I don't know if the software that comes with it is the same as for my old model. With the software I have, there is _no_ correction for distortion or shadows. I don't have a problem with that becau...
by rkomar
15 May 2022, 23:33
Forum: Scanners and Build Threads
Topic: Scanning setup/build/purchasing options for for scanning image heavy books of varying sizes/thicknesses
Replies: 8
Views: 4746

Re: Scanning setup/build/purchasing options for for scanning image heavy books of varying sizes/thicknesses

I have my scanner near the edge of the cabinet it is on, so that one side of the book hangs straight down off the side of the cabinet. That way, you don't need to open the book very much to get good access into the gutter. Unless a book has a very stiff spine, I find I can get the page flat right ou...
by rkomar
13 May 2022, 09:30
Forum: Scanners and Build Threads
Topic: Epson Scanner Technical Brief
Replies: 1
Views: 2719

Re: Epson Scanner Technical Brief

Thanks! That was an interesting read.
by rkomar
03 May 2022, 17:33
Forum: Scanners and Build Threads
Topic: Scanning setup/build/purchasing options for for scanning image heavy books of varying sizes/thicknesses
Replies: 8
Views: 4746

Re: Scanning setup/build/purchasing options for for scanning image heavy books of varying sizes/thicknesses

My Opticbook scanner claims it does 600dpi, and that is accurate as far as I can see. What do you think you will learn from a sample scan? Without the original that was scanned, it's hard to know how good the reproduction is. See http://komary.net/cathy.png for a scan I took of a picture in a printe...
by rkomar
27 Apr 2022, 15:32
Forum: Scanners and Build Threads
Topic: Scanning setup/build/purchasing options for for scanning image heavy books of varying sizes/thicknesses
Replies: 8
Views: 4746

Re: Scanning setup/build/purchasing options for for scanning image heavy books of varying sizes/thicknesses

If you aren't going to use the scanner really heavily, then Plustek offers some Opticbook scanners that are designed for scanning bound books. They are designed to scan one page at a time, with the opposing page hanging off the side so that you don't have to break the binding to get a flat scan. The...
by rkomar
16 Dec 2021, 00:52
Forum: Scanners and Build Threads
Topic: Smartphone and Cardboard box solution
Replies: 11
Views: 5886

Re: Smartphone and Cardboard box solution

Is there any issue with the box shaking while you are trying to photograph the pages?
by rkomar
27 Nov 2021, 11:33
Forum: Cameras and Electronics
Topic: Scanning with Xiaomi Mi 9 but bad(bend) results, what camera can I use?
Replies: 4
Views: 4171

Re: Scanning with Xiaomi Mi 9 but bad(bend) results, what camera can I use?

I should also add that you can simplify processing with gimp by using batch commands if your undistort operation always uses the same parameters. Here are some notes I made on the subject a few years ago: gimp batch commands: (args: filename/pattern main edge zoom brighten xshift yshift) > gimp -i -...
by rkomar
27 Nov 2021, 11:14
Forum: Cameras and Electronics
Topic: Scanning with Xiaomi Mi 9 but bad(bend) results, what camera can I use?
Replies: 4
Views: 4171

Re: Scanning with Xiaomi Mi 9 but bad(bend) results, what camera can I use?

I would also suggest that you position the camera farther away and zoom in if possible. That usually improves the problems you saw (depth of field and lens distortions).