Book Scanner Software: Difference between revisions
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* [[18 March 2017: Install and try out Spreads on a Mac Mini]] | * [[18 March 2017: Install and try out Spreads on a Mac Mini]] | ||
* [[20 March 2017: Continue Spreads Install on a Mac Mini]] | * [[20 March 2017: Continue Spreads Install on a Mac Mini]] | ||
* | * [[30 May 2017: Test a copy of PDFScanner]], a macOS scanner/image-to-PDF package costing about US$16 | ||
Latest revision as of 02:47, 31 May 2017
Introduction[edit]
This page is for document efforts beginning in 2017 to create a software OCR pipeline.
This is a continuation of efforts by the Digital Archivists Working Group to make the book scanner more convenient to work with.
Platform[edit]
The current hardware platform consists of the following elements-
- A wooden book scanner\ frame, built by members of the Digital Archivists working group
- Two cameras (currently Canon EOS Rebel T3), mounted in the book scanner
- Lighting, glass plates, book platen
- USB cables connecting cameras to computer
- Apple Mac Mini (mid 2010: Core2Duo 2.4 GHz, 8GB RAM, NVIDIA GeForce 320M 256MB)
- macOS Sierra 10.12.3
Intent[edit]
The intent of this effort is provide an OCR facility to help create digital documents from the pages photographed by the book scanner platform. Aspects of this may include-
- Photo manipulation (cropping, rotation, image adjustments)
- Partitioning of photos to provide hints to the software about text versus image regions
- OCR conversion of characters in photos to text files
- Hooking into the OCR API to obtain confidence level or probability data about each image conversion result, possibly for directing the human operator to regions that may need correcting
- Connecting together and automating of any of these aspects
Softwares[edit]
Scanner & Camera Control[edit]
- CHDK: Camera control package that Steele Nivenson has been hacking on, to the point it's functioning quite well with used, low-cost 16MP mirrorless Canon pocket cameras (PowerShot A2200, A2500), in addition to the EOS DSLR lineup.
Acquisition & Image Post-Processing[edit]
- spreads: Project on Github implementing acquisition through OCR, apparently by Johannes Baiter.
Efforts[edit]
- 4 March 2017: A session with Tesseract
- 16 March 2017: Tested a Trial Copy of ABBYY FineReader, an image-to-PDF OCR package starting around $120
- 18 March 2017: Install and try out Spreads on a Mac Mini
- 20 March 2017: Continue Spreads Install on a Mac Mini
- 30 May 2017: Test a copy of PDFScanner, a macOS scanner/image-to-PDF package costing about US$16