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CHANGELOG.md

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1.0.1 March 2025

  • Image class

    • .dice method, chops an image up into tiles, can be overlapping
    • .Tile(columns=0) will arrange the tiles into a roughly square layout
    • Constant images, previously many of these could only generate square images, this is now generalized
    • .Chequerboard creates a chequerboard pattern
    • set background color for image warp undefined pixels
    • single plane images can have a colorplane name
    • deprecate colordict(), use colororder2dict() instead
    • String now supports two string formats, can create color images
    • fixed bug with gamma="sRGB" which always returned a float image, type is now the same as passed

  • Blobs

    • new methods for blob aligned box, plot_aligned_box,
    • plot_perimeter options
    • perimeter_hull convex hull
    • fixed bug with runt blobs

  • Kernels

    • added Kernel.HGauss for Hessian of Gaussian
    • added Kernel repr method, disp method ArUcoBoard class

  • Camera models

    • Fixed errors in some camera projection models

  • Point clouds

    • PointCloud now has a "constructor" for depth images, PointCloud.DepthImage()

  • Miscellaneous

    • Lots more code examples and plots
    • Move decoratores scalar_result and array_result to machinevisiontoolbox.decorators.py
    • improved unit testing

1.0.0 January 2025

  • Kernel methods now return Kernel instances rather than NumPy arrays. Methods that accept a kernel can accept a Kernel instance or a NumPy array. Methods exist to stringify or print a kernel.

  • The indexing order of an Image object (using square bracket __getitem__ access) has changed and is now img[u,v] where u is the column coordinate and v is the row coordinate. This is consistent with the column-first convention used across the Toolbox and is consistent with the $(u,v)$ coordinate system for images. But, this is the opposite order to that used for NumPy index on the underlying array, and to earlier versions of the Toolbox.

    • a 2-tuple of integers, select this pixel. If the image has multiple planes, the result is a vector over planes.
    • a 3-tuple of integers, for a multiplane image select this pixel from the specified plane.
    • a 2-tuple of slice objects, select this region. If the image has multiple planes, the result is a 3D array.
    • a 3-tuple of slice objects, select this region of uv and planes
    • an int, select this plane
    • a string, select this named plane or planes

  • added pixel(u,v) method for faster access to a single pixel value, scalar or vector.

  • the children of a Blob is now given as a list of Blob objects, not their indices within the overall list of blobs. This simplies traversing the blob hierarchy tree. Similarly, the parent is a reference to the parent Blob object rather than an index, and is None if the blob has no parent (its parent is the background).

  • Documentation overhaul, both in-code docstrings, and the organization of the overall Sphinx document.

  • Additional unit tests

  • Myriad minor bug fixes, see commit history.