Decapod Roadmap
This roadmap is constantly evolving and adapting.
Table of Contents
Definitions
"Good Quality Source Material"
- segmented: distinguish lines and characters
- high enough contrast to detect characters
- skew should be corrected automatically or in the Decapod UI
Application Architecture
Hardware and image capture
- Two cameras
- Book flattening and camera alignment hardware
- Capture UX
or
- Flatbed scanner
- Folder full of images
or
- Single camera
- SD card
- Folder full of images
- or import UI for importing images from an SD card
Book Editing and Management Application
- Import images
- Reorder pages
- Delete pages
- Crop
- Rotation correction/skew
- Basic book metadata
- (Contrast controls)
- (Image annotation)
PDF Generation Pipeline
- Dewarping
- Binarization
- OCR
- PDF generation
Decapod Minimum Viable Application 1.0
- Import images
- Export:
- Good quality image-based PDF
- Searchable text in PDF
- Text is selectable, screen readable, and extractable
- Font matching
Supplementary Features
- Reorder pages
- Delete pages
- Basic book metadata (i.e. Dublin core fields)
Incremental Design/Development Roadmap
Decapod 0.5a
- For good quality source material, produce a PDF with:
- Good image quality
- Searchable text
- Selectable, extractable text
Decapod 0.5
- New UI for importing a folder full of images (e.g. from a flat bed scanner)
- Polish export UI
- See Decapod 0.5 Planning
Decapod 0.6 (Full-featured Export to PDF)
Import / Export UI
- More export options: dimensions, DPI, colour depth, OCR text file output
- Report export status on the Exporter: make use of JSON status file
- TIFF output
Server
- Add support for new genpdf features
- Make use of genpdf JSON status file
- Report errors better (there are some generic errors)
Client and Server
- Make UI respond meaningfully to server error messages.
- Requires some design.
Infrastructure
- Possible update to Ocropus 0.5
- Possible update to Ubuntu 12.04
ETA: 6 weeks (July 20th 2012)
- More detailed Decapod 0.6 planning
Decapod 0.7
- DSLR controlled within Decapod's user interface using gphoto
- Detect attached camera.
- Take a photo and transfer over USB to disk.
- Implementation of Stereo Capture
- Physical rig for mounting two cameras sufficiently for stereo dewarping
- Calibration UI
- Stereo Capture UI
- Cameras are checked: matching pair of supported cameras.
- Cameras are calibrated using the Calibration UI.
- User captures pairs of images and they are saved to disk.
- Once done capturing, a ZIP file is created with all the stereo images and the calibration data.
- Stereo Dewarp UI
- Upload a ZIP file containing stereo pair of images and calibration data, and generate a de-warped image to disk.
- User is prompted to download the ZIP file.
- Structured light UI
- Physical rig for mounting a camera on top of a projector
- Calibration and capture UI
- Better Error handling across all components
Things to Consider in the Future
- Metadata
- basic book metadata
- fancy dublin core, etc.
- Annotation
- Text alternatives to images
- translations
- Scholarly annotations
- Tagging
- New page management user interfaces
- Deleting
- Reordering
- Cropping
- Rotation
- Undo Delete
- Undo Crop, Rotation, Reordering
- Redo Delete
- Redo Crop, Rotation, Reordering
- Ability to mark page boundaries within a single image of a two-page spread
- Book management
- The ability to manage and work concurrently on more than one book at a time
- Create, organize, delete
- Edit information about the book (name, basic metadata, etc.)
- Schedule books for export