Project Gado: Building an Open Archival Scanning Robot Using
Project Gado A powerful, durable Open Source robotic scanner for sensitive archival materials BPEX, December 5 2012 Tom Smith Info@projectgado.org Afro American Newspaper family operated for 120 years Afro American Newspaper 1.5 million photographs Afro American Newspaper One Archivist The Vision for Gado An affordable option for digitization at small archives The Vision for Gado an autonomous and open source robot for digitizing photographic collections costing < $500 Gado 1 Gado 1 good proof of concept much too complicated Gado 2 Gado 2 40K images 1 2 of the cost demo http://youtu.be/OF8SAyHAi64?t=4m42s Holistic Process pre‐processing digitization post‐processing publishing and monetization Pre Processing challenges Digitization 42s per photo Live Analytics Post Processing Crop and deskew Post Processing Crop and deskew Post Processing Page analysis Text segmentation Post Processing OCR for back of images Post Processing `The former Miss Violet W. Walston cuts her cake following her wedding tohers of the family looking on include, left to right, Mrs. Thurman TillettBlonnie Walston, Mr. and Mrs. Thomas R. Walston, Mrs. Helena J. Bar;nings, Mrs. Daniel Trotman and Mrs. Marie Johnson. Tagging Publishing/Monetization GadoImages.com image licensing Get Involved GadoImages.com ProjectGado.org @projectgado tom@esdallc.com References http://www.blackpast.org/files/blackpast_images/Murphy__John_Henry__Sr.jpg http://brandimpact.files.wordpress.com/2008/11/legos.jpg http://www.softicons.com/free‐icons/system‐icons/colobrush‐icons‐by‐eponas‐ deeway/database‐icon Extras overview hardware codebase challenges next steps Design Philosophies low cost simple modular durable Low Cost Small archives don’t have a lot of cash. The Afro can only afford one archivist to its 1.5 million images. hardware design philosophies Low Cost Small archives don’t have a lot of cash. For example, the Afro has a single archivist to its 1.5 million images. So we set a ceiling of hardware $500 design philosophies Simple This robot is a kit. (keeping costs down) We want John Doe to assemble it without a PhD in robotics. hardware design philosophies Modular Open source components and design. No reinventing the wheel here. hardware design philosophies Modular If something breaks, it can be replaced. hardware design philosophies Durable 1.5 million images hardware design philosophies overview hardware codebase challenges next steps Mechanical 1. Lasercut MDF 2. Screw‐together, tab and slot 3. Strong servo base 4. Mini actuator 5. Vacuum pump hardware “The Brain” Custom shield + Arduino Uno hardware Sensors hardware overview demo codebase challenges next steps overview hardware codebase challenges next steps Basics Arduino firmware Python software (cross platform) MySQL database codebase Arduino Communication Pyserial Custom Protocol ‐ int + char ‐ char → firmware function ‐ JSON response Functions mirrored in firmware & software codebase Scanning Python TWAIN Heavily modified; steal our copy! Direct system call to SANE in Linux Needs: Store scanner in memory codebase Collection Management MySQL Database codebase Collection Management Needs: Adapting to hierarchical collections codebase overview hardware codebase challenges next steps Camera Scans DSLR expensive, no Windows Webcam cheap, low quality Consumer camera no control code challenges Community Involvement Coding Building Tagging challenges overview hardware codebase challenges next steps Code http://code.google.com/p/project‐gado/ Need sample images? Code questions? tom@esdallc.com Build At ProjectGado.org: • Lasercut files • PCB gerbers • Eagle files • BOM • and more Partner • ESDA LLC offers turn‐key setup for institutions, multiple scanning options • Future partners – Johns Hopkins – University of Maryland – MD State Archives – You? Contributors Get Involved GadoImages.com @projectgado info@projectgado.org
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