Hi folks. After a lot of tests (permanent tests anyway), Iâ€™m going to share with you an approach for a single camera bookscanner with a â€œsoft cradleâ€ system.
I call it the SC TYPE 1
The main problem to use a single flat platen and just one camera for bookscanning is to press the book wide opened against the glass.
So talking to some friends about this thing one come with the idea â€œwhy not to use a piece of foam?â€. Cool, but soon we discovered that a regular foam is unable to deform uniformly behind the book, particularly when you have fell pages at one side an a lot at the other side. Trying different things I testes this â€œmemory foam pillowâ€ that has some interesting deformation characteristics.
Look what happens when I press an opened book against the pillow.
The foam deforms in such a way that will accommodate the book during the page turning from the beginning to the end.
Next step was to build a box to accommodate the pillow
And a support with rails for the camera mechanism
Here we have the camera mounted on its support with a mechanical trigger system.
Of course the illumination is always a concern (and a big problem)â€¦ I placed the 5 FCLâ€™s around the platen in a way to avoid reflex.
The set looked like this. Now the thing was dismantled because Iâ€™m building a more â€œpermanentâ€ prototype.
I thing that the main virtue of this approach is its ready-to-go capability. Its so simple and with minimum moving parts that you wonâ€™t think twice to scan few pages or even only one. By the way some binding system are difficult to open with this kind of platen, requiring our old friend the V platen approach. Anyway it may work for 80% of the cases making the job easier.
Post processing in some cases (when you donâ€™t care to have the two pages of the book on a single image for example) was considerably faster.
I helping some people with a archive digitalization and our plan is to use for â€œsoft cradleâ€ books scanners and one with V platen.
As my experimentation progress Iâ€™ll try to keep you informed. Maybe somebody even dare to made one of this, if so donâ€™t hesitate to ask.