Releases

Releases are named after Megalithic sites in the UK running through letters of the alphabet and roughly south to north, trying to stick with more memorable names. For a very minor release, we sometimes don't change the letter.

For fun I've added Google Maps and NLS references to each site and a little bit of info. You can look them up on the Megalithic Portal for more.

Production releases

None

Beta releases

0.12.0-beta 2026-03-04 JOANEY HOW

I've had to go quite a long way north to get a name I liked; this one's in Somerset. There is a minor backward compatibility issue (camera data) but I'll still make it a minor bump; most things will still work.

  • Separation of camera and reflectance data
  • reflectance node now calculates known reflectance from filter reponses and patch reflectances
  • measured filter and reflectance spectra supported (rather than simulated)
  • transmission angles and patch incident stereo angles supported
  • canvas spectrum widget has a variable area
  • DATA type (e.g. from spectrum node) is now TABLE
  • Better indexing operator for bands in expr allows e.g. a[640,540] or a[R,G]
  • decorr stretch much improved: outputs eigenvals and SDs, permits variable stretch, variable clipping of outliers (i.e. contrast stretch)
  • archives hold metadata: type, author, date and a history if files are overwritten
  • gamma correction on canvas
  • multifile cache handling improvements
  • many bug fixes

Site

Alpha releases

0.11.0-alpha 2025-10-24 IGNIOC STONE

Fenton, where are you?

  • Some UI changes and fixes
  • Various internal fixes to do with object deepcopy
  • Basic debayering in the RGB input method (just bilinear, edge-aware and variable number of gradients)
  • Separate plots in reflectance node to help check the line-fitting visually
  • Graph updates to show progress as it runs
  • Ctrl-click on a node to force recalculation
  • gradient node is now colourmap

Site

  • Google maps
  • NLS map
  • An ancient stone cross, on which is written VITALI FILI TORRICI, in the village of St. Clement, near Truro.

0.10.0-alpha 2025-06-12 HALWYN ROUND

I still miss Fenton Saurus.

  • New system for storing camera data in PARC files
  • Subcommand system with special commands (lscams, gencam etc.)
  • Reflectance correction (given data from the camera and a calib target)
  • Various objects no longer require Documents for deserialisation
  • Colorchecker (i.e. Macbeth) calibration target locator
  • Some new nodes and functions (roicull, getflags, reflectance..)
  • Small changes to canvas DQ viewing
  • Staying at Python 3.9 for now

Site

0.9.0-alpha 2025-02-17 GODOLPHIN HILL

I'll miss Fenton Saurus, that was a great name.

  • New system for node parameters - the TaggedAggregate system. All nodes updated to this where it makes sense.
  • Batch runner (pcotbatch) first draft, which allows a graph to be run from the command line with inputs and nodes able to be modified with a text file, and outputs able to be captured and saved.
  • Complete rewrite of manual register node
  • "PARC" input and output file format - allows multispectral images with uncertainty to be stored (and other data types too)
  • Various bits of refactoring
  • Issue fixes
  • Yet more tests
  • Nodes are now created by left-click dragging from the palette
  • Nodes which have been renamed from their defaults have their name text shown in bold
  • Forced to downgrade minimum Python version to 3.9 temporarily

Site

0.8.0-alpha 2024-07-25 FENTON SAURUS

Yes, really: Fenton Saurus

  • More unit tests
  • colour connector "swatch" generator script
  • started work on dark/flat field generator
  • Datum archives - a file format (.PARC) for saving Datum objects, with an associated input method and exporters. Required because we have no other way of saving images with uncertainty and DQ.
  • DatumStore class wraps Archive objects so we can store Datum (this is used for the datum archives)
  • expr uses a DataWidget, as does TabData.
  • 1D vectors supported as a Datum.NUMBER type. Modifications made to datumfuncs and operators permit this. Notably, the semantics of mean, sd, sum, min and
  • square bracket parsing in expressions generates vector-creation and vector-index instructions max have changed to operate band-wise and generate a vector when performed on images.
  • Multiband extraction, e.g. a$[640,550,440].
  • .bands property generates a vector of wavelengths, so we can do a$b.bands, to get the bands in a that are also in b, in the same order as in b.
  • .u property
  • properties graph tests and QoL work for test building
  • precedence adjustments in expressions
  • getSelection in document can help get selected nodes in plugins
  • serialiseFields does a deepcopy - fixes undo bugs
  • fixes to roiexpr; it no longer keeps UI data in the node so undo works better
  • Cookbook in progress, but not part of the main repository to allow it to be updated more frequently
  • First release for Zenodo

Site

  • Google maps
  • NLS map
  • I can find very few references to this holy well in Lelant (near Hayle), no accurate maps - and that's a shame because it's an absolutely top-notch name. Honestly, I'm not making this one up. Fenton is probably cognate with Welsh ffynnon (and English fountain for that matter).

0.7.0-alpha 2024-05-03 EAST PENTIRE

  • Very many more unit tests
  • Bug fixes
  • Complete rewrite of spectrum system, using the SpectrumSet object
  • Multidot now does painted regions and floodfill
  • Joseph's PCT detector outputs image with ROIs
  • Dump removed and sink enhanced
  • TabData shows sources
  • Inputs decoupled from Sources - Sources now use composition, not inheritance
  • Comment box for nodes removed (it was never used)
  • Direct multifile loading
  • Direct PDS4 loading - required refactoring of entire PDS4 layer
  • Direct ENVI loading
  • Raw file loading from mono images supporting lots of formats
  • Loader presets for multifile
  • Operator overloading on Datum objects
  • The "datumfunc" system replacing hand-registration of functions
  • flip and rotate functions (datumfuncs)
  • String datum objects and strings usable in expr
  • Docs on library usage
  • Changes to nodes so that slow nodes can be disabled and very slow nodes start disabled. This functionality existed before, but was "ad-hoc"
  • Document.changed() is now Document.run() and forces disabled nodes to run
  • Most nodes now store data in their outputs rather than a "node.out" which is then written to an output
  • Changes to multidot - doc improvements, UX and bug fixes

Site

0.6.1-alpha 2023-10-04 DYNAS COVE (minor release)

  • Multifile input can accept BMP files
  • Better multifile documentation
  • Filter specifications are no longer hardwired and are loaded from CSVs
  • PANCAM and AUPE filters are default filter sets loaded in
  • Others can be specified in a config file (and can override PANCAM and AUPE)
  • Filter set no longer required by PDS4 input

Site

0.6.0-alpha 2023-09-11 DRIFT STONES

  • uncertainty and error bit propagation in expr and all nodes
  • Testing quality and propagation rules (see Principles)
  • Test graphs for nodes and other high-level functionality
  • Test nodes for those graphs
  • Tabular output on spectrum and histogram nodes
  • Gen node for test patterns
  • Refactoring of Datum
  • Utility nodes - e.g. roidq for generating an ROI from DQ bits
  • Output enhancements
    • Gradient node can export to PDF
    • Annotations (e.g. text labels) are now drawn on the painter at high res, and have been refactored hugely
    • Annotations use thickness zero by default (the Qt "cosmetic" thickness)
  • PCT detector node
  • ROI negation and refactoring of operators
  • roiexpr node for composing ROIs using expressions
  • Crude band depth node (needs work)
  • A lot of bug fixes and regression fixes

Site

0.5.0-alpha 2023-03-08 CARLENNO ROUND

  • Data quality and bit viewing on canvas
  • Palette and canvas interface with collapsable sections
  • Annotations (ROIs, legends) are now drawn onto the canvas rather than the image
  • Export to PDF, SVG and PNG with those hi-res annotations
  • gradient is much simpler, can overlay onto the image and can draw a legend

Site

0.4.0-alpha 2022-11-30 CAER BRAN

  • Annotation system entirely rewritten
  • PDF/PNG/SVG exporter
  • Gradient legend annotation
  • Doc updates

Site

0.3.0-alpha 2022-10-27 BEACON HUT

  • Open source!
  • PDS4 importer with proctools
  • Ad-hoc Spectrum viewer in canvas
  • Significant rewrite of expression execution code, permitting custom types to have operations defined on them
  • Direct input method for library use
  • Improved default RGB mapping in canvas
  • Testing
    • Basics testing
    • Testing of the operating principles (see Principles)
      • Source rules
      • ROI rules
  • rect node can now be edited numerically
  • circle node can add circular ROIs, which can be edited numerically.

Site

  • Google maps
  • NLS map
  • A chambered cairn, or it could possibly be a hut, between Helston and Falmouth.

0.2.0-alpha 2022-04-21 ANJARDEN SPRING

  • "pixel scanning" on canvases, shows spectrum of pixel when active
  • custom cursor, pixel under cursor highlighted at high zooms
  • text toggle button (currently unused)
  • fixes to example plugin
  • added macos.spec for pyinstaller
  • archive system shows progress when loading each archive element
  • Issue 1 fix (multiple tab closes when main window reinitialised)
  • dynamic type determination for expr output
  • can connect incompatible node outputs to inputs; indicated as red arrows
  • infinite recursion in ROI nodes fix
  • splash screen for Windows/Linux pyinstaller startup (not yet supported on MacOS pyinstaller)
  • custom Datum and connection brush types now easy
  • expr resizing regression fix
  • multiple input buttons after load/resize fix
  • status bar repaints on ui.msg, so it's updated in load and perform
  • context menu on editable text caused a crash (bug in Qt). Workaround.
  • comment boxes

Site

0.1.0-alpha 2022-03-02 ALSIA WELL

  • Initial alpha release outside Aberystwyth

Site